INSTALLATION INSTRUCTIONS for XR700 and XR3000static.summitracing.com/global/images/instructions/xr700 instructions.pdfbypassed. New XR700 and XR3000 modules have a diagnostic LED

9000-0700110/2000

INSTALLATION INSTRUCTIONS for

XR700 and XR3000OPTICALLY TRIGGERED IGNITION SYSTEMPart Numbers 700-0226, 700-0231, 700-0292, 700-0300,700-0309, 3000-0226, 3000-0231, and 3000-0292

CAUTION: READ INSTRUCTIONS CAREFULLY BEFORE STARTING INSTALLATION.

OVERVIEWXR700 and XR3000 elec-

tronic ignition modules use an opti-cal trigger assembly to replace con-ventional breaker points and originalequipment (OE) magnetic and HallEffect pickup systems. The XR700requires ballast resistance to limitcoil current. The XR3000 is a highperformance version with a comput-er chip that controls coil current anddwell.When installing an XR3000, allOE ballast resistance must bebypassed.

New XR700 and XR3000modules have a diagnostic LED. Allnew XR700 units with the LED maybe used for both negative or positiveground systems. These new XR700units are not compatible with 6 voltsystems.

IGNITION INSPECTIONThe XR700/XR3000 optical

trigger assembly requires an OEspecification distributor cap androtor to avoid clearance problemsand arcing. You should replace therotor and cap when installing thenew ignition system. For best results,you should also replace the sparkplugs, spark plug wires, and ignitioncoil. Carefully inspect wiring to thecoil and replace any worn or frayedsections. For maximum perfor-mance, use Crane coils andFireWire spark plug wires.

DISTRIBUTORALIGNMENT ANDDISASSEMBLY

1. Make notes and label all sparkplug wires so that you can laterre-install them. Remove distrib-utor cap.

2. Part numbers 700-0226, 700-0309, and 3000-0226, skip

ahead to step 6. Italian appli-cations with Marelli distribu-tor, skip remainder of thissection and proceed toOptical Trigger Installationsection.

3. Mark distributor below numberone spark plug terminal asshown in Figure 1. Remove dis-tributor cap. Crank engine andnote direction of distributor shaftrotation.

4. Align engine timing marks asspecified in shop manual. Ifrotor is pointing opposite direc-tion from mark, rotate engineone more complete revolutionand align timing marks again.Timing marks must remainaligned throughout the installa-tion process.

Read the followingIntroductory sectionsand then use the OpticalTrigger Installation Indexon page 2 to find theappropriate section foryour vehicle.

Lucas only. If the distributor has a 3 terminal connector,it is an OPUS system and you can proceed. If the distrib-utor has a 2 terminal connector, it is not an OPUS systemand you must use Crane HI-6R part number 6000-6400.

CAUTION: Disconnectthe vehicle’s batteryground cable beforecontinuing installation.

1

MAKE MARK ONDISTRIBUTOR BODY

CENTERLINE OFDISTRIBUTOR CAPTERMINAL

Figure 1. Distributor Marking

CENTEREDOVER MARK

ROTOR TIP

Figure 2. Rotor Alignment

530 Fentress Boulevard, Daytona Beach, FL 32114Tech Line: (386) 258-6174 Fax: (386) 258-6167Check our web site for updates: www.cranecams.com

210/2000 9000-0700

5. Verify that rotor tip now pointsto the mark as shown in Figure2. If not, loosen distributor tiedown bolt and rotate distributorto align rotor tip to mark.Remember to tighten bolt whendone. Note: Removal of distribu-tor is not required, but mayimprove access. Follow instruc-tions in shop manual. Markengine where rotor tip is point-ing. Do not crank engine withdistributor removed.

6. Remove rotor and plastic dustshield (if used). Breaker pointapplications: remove breakerpoints, breaker post/stud, con-denser, and any wires frombreaker points to coil or ground.Do not damage rubber grommetthrough which wire exits distrib-utor. Bosch, Hitachi, Lucas,and Nippondenso OE elec-tronic systems: refer todetailed instructions inOptical Trigger Installationsection.

OPTICAL TRIGGERINSTALLATION

DOMESTIC 4-6-8CYLINDER (EXCEPTDELCO-REMY 8 CYL)AND VW WITH BOSCH“009” DISTRIBUTOR1. Refer to Figure 3. Select the

best fitting mounting bracketand install it on the distributorplate in the exact locationwhere the points were mounted.Use the screws that held thepoints.

2. Select the best fitting shutterwith the same number of slotsas cylinders for your applica-tion. Install shutter on distributorshaft cam. Make sure that theflats inside shutter line up withthe cam flats. Use a socket topress the shutter down intoposition. To prevent breakingthe shutter, do not press on theslotted rim.

OPTICAL TRIGGER INSTALLATIONINDEX

Part Numbers 700-0226 and 3000-0226:Domestic 4-6-8 Cylinder (exc. Delco Remy 8 Cyl.)and VW with Bosch “009” Distributor . . . . . . . . . . . . . . .Page 2

Delco Remy 8 Cylinder . . . . . . . . . . . . . . . . . . . . . . . . . .Page 3

Part Numbers 700-0231 and 3000-0231:Universal 4-6-8 Cylinder (exc. Marelli) . . . . . . . . . . . . . .Page 3Marelli . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 4

Part Numbers 700-0292 and 3000-0292:Bosch Hall Effect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 5Bosch Magnetic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 5Hitachi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 6Nippondenso . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 7

Part Number 700-0300:Lucas Opus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 7

Part Number 700-0309:Mallory YL Dual Point (8 cyl only) . . . . . . . . . . . . . . . . . .Page 9Mallory Unilite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 9

CAUTION: Make sure you have read the introductorymaterial and performed the distributor alignment anddisassembly step before proceeding with optical triggerinstallation.

ROTOR

SHUTTER

MOUNTINGBRACKET

OPTICALTRIGGER

MOLEXTERMINALS

Figure 3. Distributor Assembly

310/2000 9000-0700

3. Attach the optical trigger to themounting bracket with the sup-plied 4-40 x 3/16” screw. Do notover tighten this screw. Adjustthe trigger height so that theshutter rim is approximately inthe middle of the trigger open-ing as shown in Figure 4. Checkfor clearance around all parts.Verify that the shutter is leveland does not rub or touch. Ifrequired, readjust it. Reinstallrotor.

4. Pass optical trigger cablethrough exit hole used for thepoints wire. Attach cable tobreaker plate with a nylon tiewrap. Leave enough slack toallow movement of vacuumadvance mechanism. If possibleuse the original rubber grommetto seal the cable exit hole.Otherwise, use silicone sealerto seal wire exit hole.

5. Proceed with ignition moduleinstallation on page 10.

DELCO-REMY 8CYLINDERDISTRIBUTOR1. Refer to Figure 5. Use the sup-

plied hardware. Attach the opti-cal trigger to the mountingbracket with a 4-40 x 3/16”screw. Do not over tighten.Install the mounting bracket andthe optical trigger on the distrib-utor breaker plate at the pointslocation using two 8-32 x 3/8”buttonhead screws and 1/8”spacers as shown.

2. Pass the shutter over theadvance weights as shownin Figure 5. Position theshutter with the shutter rimunderneath the advanceweight plate. Align the shut-ter mounting holes with therotor mounting holes in theadvance weight plate.

3. Reinstall the rotor onto theadvance weight plate in theoriginal position as shownin Figure 6. Check for cor-rect seating of rotor. Usethe two supplied 10-32 x7/8” screws and jam nutsas shown to secure therotor and shutter. Firmlytighten these screws. Thencheck for proper shutterclearance as shown inFigure 7.

4. Pass optical trigger cablethrough exit hole used forthe points wire. Attachcable to breaker plate witha nylon tie wrap. Leaveenough slack to allowmovement of vacuumadvance mechanism. Ifpossible, use the originalrubber grommet to seal thecable exit hole. Otherwise,use silicone sealer to sealwire exit hole.

5. Proceed with ignition mod-ule installation on page 10.

UNIVERSAL 4-6-8CYLINDERDISTRIBUTOR(ADJUSTABLEBRACKET KIT)1. Attach mounting arm to

optical trigger with supplied4-40 x 3/16” screw asshown in Figure 8. To allowvertical adjustment of opti-cal trigger, do not tightenscrew completely.

2. Use an existing screw onthe breaker plate to installthe best fitting mountingfoot as shown in Figure 8.

RIM

VERIFY PROPER CLEARANCE FROMOPTICAL TRIGGER TO SHUTTER

Figure 4. Trigger Alignment

SHUTTER

MOUNTINGBRACKET

OPTICALTRIGGER

Figure 5. Delco-Remy Shutter

ROTOR

MOLEXTERMINALS

SHUTTER AFTERINSTALLATION

ROUTETHROUGHEXIT HOLE

Figure 6. Delco-Remy Assembly

VERIFYPROPER

CLEARANCE

Figure 7. Trigger Alignment

410/2000 9000-0700

To allow adjustment, do nottighten screw completely.

3. Select the best fitting shutterwith the same number of slotsas cylinders for your applica-tion. Use #220 shutter for fourcylinder Bosch distributor. Slideit onto the distributor shaft camuntil firmly seated and level.Make sure that the flats orsprings inside shutter line upwith the flats on the distributorcam. Use a socket to press theshutter down into position. Toprevent breaking the shutter, donot press on the slotted rim.

4. Mount the optical trigger andbracket as shown in Figure 9. Ifclearance is limited, install shut-ter and optical trigger assemblytogether. Either side of themounting arm can face up.Some applications may requireattaching the mounting armdirectly to the points plate,drilling and tapping a new holein the points plate, and cuttingor trimming the mounting armor points plate. Attach mountingarm to mounting foot with sup-plied 6-32 x 3/16” screw asshown in Figures 8 and 9. Toallow adjustment, do not tightenthe screw completely. Pass opti-cal trigger cable through exithole used for the points wire.

5. MG TC/TD only: cut pointsplate at capacitor recess. Installtrigger in recess area. Trimmounting arm. Do not use foot.

6. Adjust the optical trigger heightso that the shutter rim isapproximately in the middle ofthe trigger opening as shown in

Figure 4. Check for clearance around all parts. Verify that the shutter is level and does not rub or touch.If required, readjust it.Reinstall rotor.

7. Proceed with ignition module installation on page 10.

MARELLIDISTRIBUTOR

1. Set engine to TDC andmark distributor body whererotor tip is pointing. Removedistributor from engine.

2. Mark drive dog and distrib-utor body so that it can bereturned to the same posi-tion on re-assembly.

3. Remove spring, locatingpin, shims, and sealingwasher from drive dog. Removedistributor shaft from body.

4. Attach mounting arm to opticaltrigger with supplied 4-40 x3/16” screw as shown in Figure8. To allow vertical adjustmentof optical trigger, do not tightenscrew completely.

5. Use an existing screw on thebreaker plate to install the bestfitting mounting foot as shownin Figures 8 and 9. To allowadjustment, do not tightenscrew completely.

6. Select the best fitting shutterwith the same number of slotsas cylinders for your applica-tion. Slide it onto the distributorshaft cam until firmly seatedand level. Make sure that theflats or springs inside shutterline up with the flats on the dis-tributor cam. Use a socket topress the shutter down intoposition. To prevent breakingthe shutter, do not press on theslotted rim. If the shutter is aloose fit when you slide it ontothe points cam, apply severaldrops of Super Glue.

7. Reassemble the distributor inreverse order of step 3.

8. Mount the optical trigger andbracket as shown in Figure 9. Ifclearance is limited, install shut-ter and optical trigger assemblyat the same time. Either side ofthe mounting arm can faceupwards to create the properalignment with the shutter.Some applications may requireattaching the mounting armdirectly to the points plate,drilling and tapping a new holein the points plate, and cuttingor trimming the mounting armor points plate to create therequired clearance. Attachmounting arm to mounting footwith supplied 6-32 x 3/16”screw as shown in Figures 8and 9. To allow adjustment, donot tighten the screw complete-ly. Pass optical trigger cablethrough exit hole used for thepoints wire.

9. Adjust the optical trigger heightso that the shutter rim isapproximately in the middle ofthe trigger opening as shown inFigure 4. Check for clearancearound all parts. Verify that theshutter is level and does not rubor touch. If required, readjust it.Reinstall rotor.

OPTICALTRIGGER

MOUNTINGFOOT

MOUNTINGARM

Figure 8. Trigger Assembly

ROTOR

SHUTTER

MOLEXTERMINALS

OPTICAL TRIGGER ONMOUNTING BRACKET

MOUNTINGFOOT

Figure 9. Distributor Assembly

510/2000 9000-0700

10. Reinstall distributor ontoengine. Make sure you align themarks you made in steps 1and 2.


BOSCH HALL EFFECTDISTRIBUTOR1. Refer to Figure 10. Remove

snap ring and washer used toretain reluctor. Remove reluctor.Pry reluctor up using twoscrewdrivers as shown inFigure 11. Pull up and removeHall effect connector from dis-tributor housing. Pry off cabletie-down from carrier plate.Removal of Hall effect sending unit is not required, butyou should cut the lead wires.

2. Select a vacant screw hole onthe carrier plate away fromobstructions. Refer to Figures 8and 9 for orientation. Install thelarge mounting foot. If possible,select a threaded hole and use an original screw. Otherwise,use the supplied 3/16” self tap-ping screw. To allow adjustment,do not tighten screwcompletely.

3. Attach mounting arm to optical trigger with supplied 4-40 x 3/16”

screw as shown in Figure 8. To allow vertical adjustment of optical trigger, do not tighten screw completely.

4. Shutters for Bosch applications have a small “V” groove that matches the distributor shaft. Select a shutter with the same numberof slots as cylinders foryour application. Slide shutter onto the distributor shaft until firmly seated and level. You can use the rotor or a large socket as a tool to press the shutter down.

5. Mount the optical trigger andbracket as shown in Figure 9. Ifclearance is limited, install shut-ter and optical trigger assemblyat the same time. Either side ofthe mounting arm can faceupwards to create the properalignment with the shutter.Attach mounting arm to mount-ing foot with supplied 6-32 x3/16” screw as shown inFigures 8 and 9. To allowadjustment, do not tighten thescrew completely.

6. Pass optical trigger cablethrough exit hole used for theOE pickup. If possible, use theoriginal rubber grommet to sealthe cable exit hole.


8. If distributor was removed, rein-stall it. Align rotor tip with markon engine. Then rotate distribu-tor to align mark on distributorwith rotor tip.


BOSCH MAGNETICDISTRIBUTOR1. Refer to Figure 12. Remove

snap ring and washer used toretain reluctor. Remove reluctor.Pull reluctor straight up or pryup using two screwdrivers asshown in Figure 11. Removesecond snap ring retainingmagnetic pickup. Remove mag-netic pickup. Remove screwsholding carrier plate, stator, andvacuum advance mechanism.Note screw lengths and loca-tions for future reassembly.Remove snap ring and washerretaining stator and carrierplate. Remove stator and carrierplate from distributor. Removestator from carrier plate (held bythree screws from bottom ofcarrier plate).

2. Reinstall carrier plate, vacuumadvance mechanism, distributorcap retaining clips, and screwsholding carrier plate to distribu-tor body. Attach the smallmounting foot to the top of sta-tor (side with fingers) using thesupplied 6-32 x 1/2” screw.Insert the screw through a hol-low rivet from the bottom of sta-tor and use a washer and nuton top. Refer to Figures 8 and 9for orientation. To allow adjust-ment, do not tighten nut com-pletely.

RELUCTOR

SNAP RING

ROTOR

HALL EFFECTSENDING UNITON CARRIER

PLATE

DUSTSHIELD

ROLL PIN

REMOVE ANDCUT WIRES

Figure 10. Bosch Hall Effect

RELUCTORROLL PIN

SHOPRAG

STATOR

Figure 11. Removal Procedure

610/2000 9000-0700

3. Reinstall stator. Rotate stator sopin on bottom of stator mateswith hole on arm from vacuumadvance mechanism. Reinstallwasher and snap ring in originalgroove on distributor shaftabove stator.


5. Select the best fitting shutterwith the same number of slotsas cylinders for your applica-tion. Slide shutter onto the dis-tributor shaft until firmly seatedand level. Make sure that thekeyway inside the shutter linesup with the distributor shaft. Youcan use the rotor or a largesocket as a tool to press theshutter down.

6. Mount the optical trigger and bracket as shown in Figure 9. If clearance is limited, install shutter and optical trigger assembly at the same time. Either side of the mounting arm can face upwards to create the proper alignment with the shutter. Attach mounting arm to mounting foot with supplied 6-32 x 3/16” screwas shown in Figures 8 and 9. To allow adjustment, do not tighten the screw completely.

7. Pass optical trigger cable through exit hole used for the OE pickup. If possible, use the original rubber grommet to seal the cable exit hole.

8. Adjust the optical trigger height so that the shutter rim is approximately in the middle of the trigger opening as shown in Figure 4. Check for clearance around all parts.Verify that the shutter is level and does not rub or touch. If required, readjust it. Reinstall rotor.



HITACHI DISTRIBUTOR1. Remove three screws holding

stator and remove stator.Remove magnetic ring, pickupcoil, and pickup coil lead wires.Remove cup surrounding thepickup coil if cup is held byscrews. Keep screws for lateruse. Do not attempt to removecup if cup is held by rivets.Remove reluctor by prying upusing two screwdrivers asshown in Figure 11. If cup couldnot be removed, skip to step 3.

2. Select a vacant screw hole onthe carrier plate away fromobstructions. Install the mount-ing foot using one of the originalpickup coil screws. Refer toFigures 8 and 9 for orientation.To allow adjustment, do nottighten screw completely.


4. Select the best fitting shutterwith the same number of slotsas cylinders for your applica-tion. Slide shutter onto the dis-tributor shaft until firmly seatedand level. Make sure that theflat inside the shutter lines upwith the distributor shaft. Youcan use the rotor or a largesocket as a tool to press theshutter down.

5. If riveted pickup cup could notbe removed in step 1, skip tostep 6. Mount the optical triggerand bracket as shown in Figure9. If clearance is limited, installshutter and optical triggerassembly at the same time.Either side of the mounting armcan face upwards to create theproper alignment with the shut-ter. Attach mounting arm tomounting foot with supplied 6-32 x 3/16” screw as shown inFigures 8 and 9. To allowadjustment, do not tighten thescrew completely. Skip tostep 7.

6. If riveted pickup cup could notbe removed in step 1, installoptical trigger and mountingarm directly to a threaded holein the cup as shown in Figure13. Do not use mounting foot.Use an original screw and thespacer provided in the partsbag. To allow adjustment, donot tighten screw completely. Incase of limited clearance, installthe shutter and optical triggerassembly at the same time.

ROTOR

DUSTSHIELD

SNAP RING

WASHER

SNAP RING

WASHER

RELUCTOR

SNAP RING

MAGNETICPICKUP

VACUUMADVANCE

MECHANISM

SHAFT

STATOR

CARRIERPLATE

Figure 12. Bosch Magnetic

710/2000 9000-0700

7. Pass optical trigger cablethrough exit hole used for theOE pickup. If possible, use theoriginal rubber grommet to sealthe cable exit hole.




NIPPONDENSODISTRIBUTOR1. Remove pickup coil assembly

(snap off dust cover if used),and pickup coil lead wires. Keeppickup coil screws for later use.Remove reluctor by prying upusing two screwdrivers asshown in Figure 11.

2. Select a vacant screw hole onthe carrier plate away fromobstructions. Install the mount-ing foot using one of the originalpickup coil screws. Refer toFigures 8 and 9 for orientation.To allow adjustment, do nottighten screw completely.

3. Attach mounting arm to optical trigger with supplied 4-40 x 3/16” screw as shown in Figure 8. To allow vertical adjustment of optical trigger, do not tighten screw completely.

4. Select the best fitting shutter with the same number of slots as cylindersfor your application. Slide shutter onto the distributor shaft until firmly seated andlevel. Make sure that the flat inside the shutter lines up with the distributor

shaft. You can use the rotor or alarge socket as a tool to pressthe shutter down.

5. Mount the optical trigger andbracket as shown in Figure 9. Ifclearance is limited, install shut-ter and optical trigger assemblyat the same time. Either side ofthe mounting arm can faceupwards to create the properalignment with the shutter.Attach mounting arm to mount-ing foot with supplied 6-32 x3/16” screw as shown inFigures 8 and 9. To allowadjustment, do not tighten thescrew completely. Passoptical trigger cable throughexit hole used for the OEpickup. If possible, use theoriginal rubber grommet toseal the cable exit hole.

6. Adjust the optical triggerheight so that the shutterrim is approximately in themiddle of the trigger open-ing as shown in Figure 4.Check for clearance aroundall parts. Verify that theshutter is level and doesnot rub or touch. If required,readjust it. Reinstall rotor.

7. If distributor was removed,reinstall it. Align rotor tipwith mark on engine. Thenrotate distributor to alignmark on distributor withrotor tip.


LUCAS OPUSDISTRIBUTOR

1. Refer to Figure 14. Removesnap ring, washer, and O ringused to retain reluctor. Removereluctor by pulling straight up.Remove the Lucas pickup. Savethe screws. Cut all wires offinside distributor. Cut the grom-met (location may vary) to cre-ate an opening where the opti-cal trigger cable can exit thedistributor.

2. Lucas 8 cylinder only. Cut offresistor mounted between twoposts so that it will not interferewith shutter installation instep 5.

OPTICALTRIGGER

Figure 13. Hitachi Distributor

12 Cylinder Jaguar withfuel injection. Refer tothe notes on page 8before proceedingwith optical triggerinstallation.

ROTOR

SHUTTER

MOLEXTERMINALS

OPTICALTRIGGER

ONMOUNTINGBRACKET

MOUNTINGFOOT

SNAP RING

WASHER

O RING

Figure 14. Typical Lucas DistributorAssembly

810/2000 9000-0700

3. Lucas distributors with com-bination amplifier and vacu-um advance unit only.Remove the combo amp/vacunit (held by two screws onback of distributor and onescrew underneath combo unit)to gain access to wires andgrommet. Cut off all wires goingto combo unit. Reassemble unitafter completing optical triggerinstallation and make sure vac-uum advance arm is engagedinto pin on advance plate.

4. Lucas V12 with externalamplifier. Disassemble top andbottom halves of distributor.Remove bushing from top shaftto allow shutter installation.Refer to Figure 15 for opticaltrigger mounting position.

5. Select the best fitting shutterwith the same number of slotsas cylinders for your applica-tion. You can use the rotor or alarge socket as a tool to pressthe shutter down. Align thelarge locating tab on bottom ofthe shutter with the large slot atthe bottom of the distributorshaft. Refer to Figure 14.Reinstall O ring, washer, andsnap ring to retain shutter.Some distributors use a bush-ing between the distributor shaftand the reluctor. Discard thispart.

6. Select the best fitting mountingbracket assembly for your dis-tributor. 4 and 6 cylinder: useone piece bracket for Lucaspickup held down by twoscrews. 8 cylinder: use onepiece bracket. 12 cylinder: useadjustable two piece bracketassembly with mounting armand mounting foot as shown inFigure 8.

7. Attach optical trigger to mount-ing arm or mounting bracket asapplicable for your distributor.Use the supplied 4-40 x 3/16”screw as shown in Figure 8. Ifapplicable, attach the mountingarm to the mounting foot withthe supplied 6-32 x 3/16” screw.To allow adjustment, do not

tighten the screws com-pletely.

8. Pass optical trigger cableout through rubber grom-met (that was cut to cre-ate an opening in step1). Install the optical trig-ger and mounting bracketassembly using originalscrew as shown inFigures 14 or 15. If usingadjustable bracket, donot tighten screw com-pletely. In case of limitedclearance, install shutterand trigger assembly atthe same time.

9. Adjust the optical triggerheight so that the shutterrim is approximately inthe middle of the triggeropening as shown inFigure 4. Check for clear-ance around all parts.Verify that the shutter islevel and does not rub or touch.If required, readjust it. Reinstallrotor

10. Reassemble distributor if applic-able. If distributor was removed,reinstall it. Align rotor tip withmark on engine. Then rotatedistributor to align markon distributor with rotortip.

10. Lucas 8 cylinder only.Verify that leading edgeof shutter window isover optical trigger asshown in Figure 25. Ifnot, go back to step 6and use the adjustabletwo piece bracketassembly to mount theoptical trigger.

11. Proceed with ignitionmodule installation onpage 10.

NOTES FORJAGUAR 12 CYLWITH FUELINJECTION

When an XR700 system isinstalled in V12 Jaguars with elec-tronic fuel injection, the Lucas fuelinjection trigger unit must beretained. Otherwise, the fuel injec-tion will not function. Follow the opti-cal trigger installation instructionsabove, except:

ROTOR

SNAP RINGWASHER

SHUTTER

MOLEXTERMINALS

OPTICALTRIGGER

MOUNTINGFOOT

O RING

FUEL INJECTIONTRIGGER UNIT(MUST KEEP)

Figure 16. Lucas V12 Distributor withFuel Injection Trigger Unit

ROTOR

SNAP RINGWASHER

SHUTTER

MOLEXTERMINALS

OPTICALTRIGGER

MOUNTINGFOOT

O RING

Figure 15. Lucas V12 Distributor

910/2000 9000-0700

1. Refer to Figure 16. Remove theLucas timing rotor and ignitionpickup. Install the optical triggerand shutter wheel as explainedabove. Use the best fitting sin-gle piece bracket to mount theoptical trigger.

2. The fuel injection trigger unit(held down by four screws)must be retained. Note that thistrigger unit requires a specialLucas rotor that has a magnetat the rear. The magnet triggersthe fuel injection trigger unit.

MALLORY YL DUALPOINT DISTRIBUTOR1. Remove wire from dual breaker

points to coil. Do not damagerubber grommet through whichwire exits distributor.

2. Loosen the two screws holdingthe Mallory points plate andremove the plate (with attacheddual points and condenser) bypulling it up. Install the newplate supplied with the opticaltrigger installation kit. Refer to

Figure 17. Tighten the screwsholding the plate.

3. Select the best fitting shutterwith the same number of slotsas cylinders for your applica-tion. Install shutter on distributorshaft cam. Make sure that theflat springs inside the shutterline up with the cam flats. Use asocket to press the shutterdown into position. To preventbreaking the shutter, do notpress on the slotted rim.

4. Attach the optical trigger to themounting bracket with the sup-plied 4-40 x 3/16” screw asshown in Figure 17. Do not overtighten this screw.


6. Pass optical trigger cablethrough exit hole used for thepoints wire. Attach cable tobreaker plate with a nylon tiewrap. If possible, use the origi-nal rubber grommet to seal thecable exit hole. Otherwise, usesilicone sealer to seal the hole.


MALLORY UNILITEDISTRIBUTOR1. Remove the Unilite module

from the distributor. Clean thegrease from the mounting plate.

2. Refer to Figure 18. Attach theoptical trigger to the mountingbracket with the supplied 4-40 x3/16” screw. The mountingbracket attaches to the originaldistributor plate and the opticaltrigger will face up to match theMallory Unilite combinationrotor/shutter. Use a cable tie toattach the optical trigger cableto the small strain relief tab onthe mounting bracket.

SHUTTER

ROTOR

OPTICALTRIGGER

MOLEXTERMINALS

BREAKERPLATEWITH BRACKETFOR OPTICALTRIGGER

Figure 17. Mallory YL Distributor

ROTOR / SHUTTER

OPTICALTRIGGER

MOUNTINGPLATEWITH BRACKETFOR OPTICALTRIGGER

MOLEXTERMINALS

Figure 18. Mallory Unilite Distributor

1010/2000 9000-0700

3. Install the opticaltrigger and brack-et assembly onthe distributorplate in the sameposition wherethe Unilite mod-ule was mounted.Use the screwsthat held theUnilite module.

4. Pass optical trig-ger cable throughexit hole used forthe Unilite wires.Leave enoughslack to allowmovement ofvacuum advancemechanism (ifequipped). If pos-sible, use theoriginal rubbergrommet to sealthe cable exithole. Otherwise,use silicone seal-er to seal the hole.

5. Reinstall the Mallory Unilitecombination rotor/shutter.Check for clearance betweenshutter and optical trigger.

6. Proceed with ignition moduleinstallation.

IGNITION MODULEINSTALLATION

1. Mount the XR700 or XR3000ignition module in any conve-nient location on the firewall ora fender well. Avoid locationsdirectly exposed to engine orexhaust header heat or wherewater can splash. Do not mountit on the engine. Use the twosheet metal screws provided tomount the ignition module.Make sure that the wires willreach to the coil and distributorwith some slack for enginemovement.

2. Basic wiring hookup isshown in Figure 19. Use thisfigure for all applicationsexcept certain Lucas Opusapplications described below.Before you connect the wires,check to see if sections 3 to 8apply to your application.

3. Bosch systems. Disconnectand remove the OE Boschmodule. Use electrical tape totape off both the module plugand plug at distributor on OEharness. To avoid disconnectingaccessories (such as tach), donot cut plugs off or remove any

wires at coil. XR700 or XR3000module connections will bemade at the Bosch coil.Proceed to step 9.

4. Hitachi systems. Disconnectand remove OE module. SomeHitachi modules are located inthe passenger compartment.Use electrical tape to tape offall wires that ran to the Hitachiignition module. To avoid dis-connecting accessories (suchas tach), do not remove anywires at coil or ballast resistor.XR700 or XR3000 module con-nections will be made at the coilterminals. Proceed to step 9.

5. Nippondenso systems. TheOE Nippondenso module (igni-tor) is mounted on the coil.Disconnect and remove theignitor. Use electrical tape totape off all wires that ran toignitor. To avoid disconnectingaccessories (such as tach), donot remove any other wires tocoil or ballast resistor. XR700 orXR3000 module connectionswill be made at the coil termi-nals. Proceed to step 9.

This section covers 12volt negative groundinstallations only. Referto the Appendix for posi-tive ground vehicles andapplications where theXR700 is used to triggera CD ignition. Note thatXR700 systems for 6 voltapplications are nolonger available and thatthe XR3000 can only beused in 12 volt negativeground applications.

IGNITIONSWITCHOE BALLAST

RESISTANCE

RUN

STARTCOIL

+

+12VBATTERY

XR3000 ONLY:JUMPER BALLASTWITH 14 AWG WIRE

REDYELLOW

BLACKGROUND TERMINALCONNECT TO ENGINEBLOCK OR CHASSIS

XR700 OR XR3000IGNITION MODULE

MAKE SURE WIRECOLORS MATCH FROMSIDE TO SIDE WHEN YOUINSERT TERMINALSINTO MOLEX PLUG

MOLEXPLUG

OPTICALTRIGGER CABLE

DISTRIBUTORWITH OPTICAL

TRIGGER

RPMX100

TACH(IF USED)

Figure 19. Basic XR700 and XR3000 Hookup

1110/2000 9000-0700

6. Triumph andMG with LucasOpus combina-tion amplifierand vacuumadvance unitmounted on dis-tributor. Refer toFigure 20. Useelectrical tape totape off the plugon the vehiclewire harness thatwent to theLucas amplifier.XR700 moduleconnections willbe made to thecoil terminals.Other Lucas con-nections areshown for refer-ence only. Nowiring changesare required. Youcan skip the fol-lowing sectionabout ballastresistance.Proceed to step9.

7. All Jaguar.Refer to Figure 21. Disconnectthe Lucas amplifier. Removal ofexternal amplifier is optional.Use electrical tape to tape offthe plugs on the vehicle wireharness that went to the Lucasamplifier and/or distributor.XR700 module connections willbe made to the coil terminals.Add the diode wire as shown.The black end of the diode wire(with attached ring terminal) isconnected to COIL-, the otherend goes to the Lucas ballastresistor as shown. Other Lucasconnections are shown for ref-erence only. No wiring changesare required. However, makesure you do not break the con-nection from COIL- to the ECUon fuel injected vehicles. Youcan skip the following sectionabout ballast resistance.Proceed to step 9.

8. Lucas Opus distributor invehicles with modified wireharness. Use the basic hookupshown in Figure 19. Rewire thevehicle as required.

9. Connect the XR700 or XR3000black wire to ground on thechassis or engine block. Anexisting bolt or screw can beused, but scrape away paintand corrosion to insure a goodground.

10. Check and double check theidentification of COIL+ andCOIL- terminals. Improper coilconnection may damage igni-tion module. Bosch coils arelabeled as follows: terminal 1 isCOIL- and terminal 15 isCOIL+. Some English coils useSW for COIL+ and CB forCOIL- .If you are not sure whichterminals are COIL+ and COIL-,use the following procedure.Label and then disconnect OE

wires from coil. Reconnect bat-tery and turn ignition key on.Use a 12V test light or volt-meter. The wire from the ignitionswitch to COIL+ will be hot.

11. Tach connection (skip if notequipped). Except for Smithscurrent sensing tachometersfound on older English vehicles,the tach wire typically goes toCOIL-. Vehicles with Smithstach, refer to Smiths Tach TechNote in the Appendix.

12. Jaguar only. Some tachs maynot work with the diode wirehookup shown in Figure 21. Ifyour tach doesn’t work, try adirect connection between theballast resistor and COIL- inplace of the diode wire.

13. Insert the three terminals on theend of the cable from the opti-cal trigger assembly into theMolex plug supplied with theinstallation kit. Make sure that

IGNITIONSWITCH RUN

START

+12VBATTERY

COIL

+–

RED

YELLOW


XR700IGNITION MODULE


MOLEXPLUG



TRIGGER

RPMX100

STARTER SOLENOID

TACH

LUCASAMPLIFIER PLUG

UNPLUGFROM

DISTRIBUTORAND TAPE UP

WHITE /GREEN ORWHITE/YELLOW

WHITE /BLACK

BALLASTRESISTOR

DRIVERESISTOR(IGNORE)

WHITE /GREEN ORWHITE/YELLOW

WHITE /GRAY ORWHITE/BLACK

Figure 20. XR700 Hookup for MG and Triumph with Lucas Opus

1210/2000 9000-0700

the individualwire colors matchfrom side to side.Use a smallscrewdriver topush the termi-nals all the wayinto the Molexplug. Then con-nect it to the mat-ing Molex plug onthe cable fromthe module. Ifyou must removea terminal, seeFigure 22 anduse the providedextraction tool.

BALLASTRESISTANCE

1. All vehicles with OE breakerpoints ignition are factoryequipped with ballast resis-tance. This can be externalresistance in the form of aceramic ballast resistor or aresistance wire between theignition key and COIL+ termi-nal. Most AMC and GM and

1975 and later VW vehicleshave a resistance wire. MostChrysler models use a ceramicresistor. Ballast resistance canalso be in the form of internalresistance within the coil. Bosch

blue coils (used with many pre-1975 VW models) and someLucas coils have internal resis-tance. Coils with internal resis-tance will measure 3 to 4 ohmsfrom COIL- to COIL+ terminals.

IGNITIONSWITCH

RUN

START

+12VBATTERY

COIL

+–

RED

YELLOW




MOLEXPLUG



TRIGGER

RPMX100

BALLASTRESISTOR

RELAY

TACH

WHITE /GREEN

WHITE /BLACK

ECU

FUEL INJECTEDVEHICLES ONLY

DIODE WIRE NOTE: Connect supplieddiode wire as shown. Ring terminal end is at coil.Splice other end to blue/white wire at ballast resistor.If tach doesn't work, use direct connection as shown by dotted line.

BALLASTRESISTOR

TACHSW

START

AMPL

IFIE

R

BLACK / REDTAPE UP

BLUE /WHITE

SEE DIODEWIRE NOTE

Figure 21. XR700 Hookup for Jaguar with Lucas Opus

HOLLOWEND

PUSH HOLLOW END OF TOOLONTO TERMINAL TO FREE IT.THEN GENTLY PULL ON WIRETO REMOVE THE TERMINAL.

Figure 22. Terminal Removal

Study the bal-last resistancesections care-fully. Mostinstallationproblems resultfrom improperballast resis-tance.

Quick Test for Ballast Resistance

You can determine if your vehicle has external ballastresistance with this simple test. Disconnect any wiresgoing to COIL-. Reconnect battery. Turn the ignitionkey on but do not start the engine. Use a volt meter asshown in Figure 23 and read voltage between COIL+terminal and ground. It should be about 12 volts. Thenmomentarily jumper the COIL- terminal to ground. Ifvoltage at COIL+ terminal drops below 8 volts, there isballast resistance between the ignition key and COIL+terminal. To determine if your coil has internal ballastresistance, use an ohm meter as shown in Figure 24.Coils with internal resistance will read 3 to 4 ohmsfrom COIL- to COIL+ terminals.

1310/2000 9000-0700

2. Bosch, Hitachi, andNippondenso OE electronicignition replacement only. Mostvehicles are factory equippedwith an external ballast resistorbetween the ignition key andCOIL+ terminal. Refer to vehicleservice manual. Bosch HallEffect systems do not have anyballast resistor.

XR700 BALLASTRESISTANCE NOTES

1. If you have a Bosch Hall Effectsystem or other system withoutballast resistance, you will needto add a 1.2 to 1.9 ohm ballastresistor. Use a Chrysler styletwo terminal ballast resistorsuch as Echlin ICR23 or WellsCR107. Connect the ballastresistor between the COIL+terminal and ignition switch asshown in Figure 19.

2. 1979-80 Honda (excludingCivic and California automat-ic transmissionAccord/Prelude) only. Thesemodels use a Hitachi ignitionand coil with internal ballastresistance. If you change to anaftermarket coil, you must adda ballast resistor.

3. Nippondenso system withthree terminal ceramic ballastresistor only. If the engine willnot start or the starter runs on,request the Nippondenso TechNote. The system will requireaddition of a diode.

4. If you are changing coils andyour vehicle has a ceramic bal-last resistor or resistance wire,do not use any additional bal-

last resistor that may be provid-ed with the coil.

5. If your OE coil had internalresistance and you are chang-ing to a new coil with lowerresistance (such as an after-market performance coil), youmust add a 1.2 to 1.9 ohm bal-last resistor. If a resistor is notsupplied with the new coil, usea Chrysler style two terminalballast resistor such as EchlinICR23 or Wells CR107.Connect the ballast resistorbetween the COIL+ terminaland ignition switch.

6. Two ballast resistors in serieswith a total of 2.5 to 3.9 ohmsmust be used with Crane PS60,LX91, and PS91 coils.

XR3000 BALLASTRESISTANCE NOTES1. 1979-80 Honda (excluding

Civic and California automat-ic transmission

Accord/Prelude) only. Thesemodels use a Hitachi ignitionand coil with internal ballastresistance. If the coil resistancemeasures more than 1.5 ohmsfrom COIL- to COIL+ terminals,you must replace the coil. Wesuggest using a Crane PS60,LX91, or PS91 coil.

2. All Bosch blue coils, Lucascoils, and other OE coils withinternal ballast resistance mustbe replaced. Use a CranePS60, LX91, or PS91 coil.

OPTICAL TRIGGERADJUSTMENTPROCEDURE

1. The new diagnostic LED greatlysimplifies the optical trigger

+ –IGNITION

COIL

VOLTMETER0-20VDC RANGE

VOLTMETER0-20VDC RANGE

( + ) ( – )POS NEG

( + ) ( – )POS NEG

ENGINE, CHASSISOR BATTERY

GROUNDBATTERY

( + )POS ( – )NEG

Figure 23. External Ballast Resistance Test

+ –

OHMETERX1 SCALE

IGNITIONCOIL

( + ) ( – )POS NEG

Figure 24. Coil Resistance Test

If you have a 700-0226,3000-0226, or 700-0309kit that uses a non-adjustable one piecebracket for the opticaltrigger, you can skip thissection.

If the XR700 runs veryhot to the touch after 15minutes of operation,you must add a ballastresistor.

For maximum perfor-mance, any external bal-last resistance must bebypassed. Refer to Figure19. Locate externalceramic ballast resistoror resistance wire.Bypass it with heavy 14AWG stranded wire. Ifthis is not practical, referto the Ignition PowerRelay Tech Note in theAppendix on page 17.

1410/2000 9000-0700

adjustment procedure. The LEDilluminates at the firing pointand can be used as a static tim-ing aid.

2. Reconnect the battery. Turnignition key on, but do not crankengine. Timing marks mustremain aligned.

3. Refer to Figure 25. Select theappropriate orientation depend-ing on direction of rotation pre-viously noted. Slide triggerassembly around the edge ofshutter in direction opposite todistributor shaft rotation. Whenthe light beam from the opticaltrigger reaches the leadingedge of a window in the shutter,the diagnostic LED will illumi-nate. At this point, stop slidingthe optical trigger. Tighten allscrews to maintain this position.If necessary, repeat sliding pro-cedure until you are sure opticaltrigger is aligned properly. Youcan position the mounting armeither to the left or to the rightof the mounting foot as requiredfor proper alignment.

4. This alignment procedureassures that the rotor is point-ing directly towards a sparkplug terminal when the leadingedge of a shutter windowreaches the optical trigger.Correct alignment assures max-imum spark energy by reducingthe gap between the rotor tipand cap terminal.

5. Attach optical trigger cable tobreaker plate with a nylon tiewrap. Leave enough slack toallow movement of vacuumadvance mechanism. If possi-ble, use the original rubbergrommet to seal the cable exithole. Otherwise, use siliconesealer to seal wire exit hole.

COMPLETING THEINSTALLATION1. Double check all connections.

Reconnect the battery if youhave not already done so.Unplug optical trigger Molex

plugs to keep ignition fromsparking while distributor cap isoff. Momentarily crank engineand visually check for clearancearound all parts. The diagnosticLED should blink while theengine is being cranked. Makesure that the shutter is level anddoes not wobble as it turns. Ifthe shutter rubs the optical trig-ger, readjust it. Reinstall distrib-utor cap and reconnect Molexplugs.

2. Start your engine and set igni-tion timing according to manu-facturer’s specifications. Note:Dwell meter readings are mean-ingless with electronic ignitionand should be ignored.

3. A final check of distributorphasing is highly recommend-ed, especially for installationsthat use an adjustable bracketfor the optical trigger. Manyproblems with rough running ormisfiring are related to improper

phasing. To check the phasing,cut or drill a large hole in thedistributor cap near a terminalas shown in Figure 26. Use atiming light connected to thatterminal and observe rotoralignment when the engine isrunning. The rotor tip should bealigned with the terminal asshown in the figure. If not, youmust adjust the optical triggerposition. Install a new distributorcap when you are done.

TROUBLESHOOTING

TACH INOPERATIVE1. With the exception of Smiths

current sensing tachs (refer topage 16), most tachs are con-nected to the COIL- terminal. Ifthe tach is inoperative, trace outthe wire. Refer to the vehicleservice manual for further infor-mation.

LEADING EDGE

CLOCKWISE

LEADING EDGE

COUNTERCLOCKWISE

Figure 25. Optical Trigger Adjustment Procedure

CORRECT ROTOR TO CAP PHASING

TERMINAL

ROTOR TIP

TIMING LIGHTDISTRIBUTOR

CAP

Figure 26. Distributor Phasing Procedure

1510/2000 9000-0700

2. Some Jaguar applications appli-cations require a diode wire.Refer to Figure 21 on page 12.

3. If the tach is erratic or readshigh, you can put a resistor inthe tach wire to reduce the sig-nal level. Start with a 10K ohm1/2 watt. You can go as low as1K ohm 1/2 watt. You can buythe resistors from Radio Shackor other electronic suppliers.Solder into tach wire and wrapwith electrical tape forprotection. If the resistor fixdoes not help, you may requirea tach adapter. Refer to page20.

4. Some Mercedes and Porscheapplications that were originallyequipped with factory capacitivedischarge (CD) ignitions havetachs that are not compatiblewith XR700 or XR3000 sys-tems. You must install an after-market tach or later model OEtach.

ENGINE WILL NOTSTART1. Observe the diagnostic LED

while cranking the engine. If theLED blinks, the optical triggerand power connections areokay. If the LED does not blink,proceed to check electrical con-nections and optical trigger asexplained in the following sec-tions.

2. Pull the high voltage coil wireout of the distributor and con-nect it to a test spark plug orplace the wire 3/8” away fromground. Crank the engine. Ifsparks fire, the problem is in thesecondary system. Possiblecauses: rotor left out, rotor, cap,or spark plug wires defective, ortiming or phasing is off (opticaltrigger not properly aligned, dis-tributor was moved, or plug wirefiring order was changed).

3. If there are no sparks, connecta test light between COIL- (neg-ative) terminal and ground.Crank the engine. If the light

flashes on and off, the triggerand module are okay, but thecoil may have failed. Try anothercoil.

4. If the light does not flash,repeat test in step 2 with aknown good coil. Try discon-necting any wires to COIL-other than the yellow wire fromthe Crane module. The onlyextra wire normally connectedto COIL- is the tach wire (orLucas diode wire). If the lightstill does not flash, the modulemay have failed.

5. Fuel injected vehicles only. Thefuel injection system typicallyrequires a trigger signal fromthe COIL- terminal. Refer tovehicle service manual fordetails.

CHECK ELECTRICALCONNECTIONS1. Check ground connection. Try a

different ground connectionpoint on the engine block ormetal chassis. Make sure theground point is free of paint andcorrosion.

2. Check voltage at COIL+ (posi-tive) terminal while crankingengine. Reading should be atleast 9 volts. If less than 9 volts,check battery and starter sys-tem. If the reading is close tozero, check wiring back to igni-tion switch and battery. Someapplications use a starterbypass to bypass the ballastresistor while cranking. Thiswire comes from the startersolenoid, relay, or ignitionswitch. Check your wiring dia-gram.

3. XR3000 only. You must bypassany ballast resistance or installthe power relay as explained onpage 17. Run the test for ballastresistance on page 13.

CHECK OPTICALTRIGGER1. Verify that wire colors match

from side to side on Molex

plugs, i.e. white to white, blackto black, and gray to gray.

2. Disconnect Molex plugs. Turnignition key on. Rapidly tap ascrewdriver blade between thewhite and gray wires on Molexplug on cable from module.XR3000 will automatically shutcoil current off unless itreceives at least two triggerpulses per second. Tappingscrewdriver should cause thediagnostic LED to blink. If theLED blinks, the module is okay,but the optical trigger may bemisaligned or may have failed. Ifthe LED doesn’t blink, the mod-ule may have failed.

ROUGH ORINTERMITTENTOPERATION1. Improper phasing is the most

likely cause of rough running onnew installations. Check phas-ing according to instructions inthe section on Completing theInstallation.

2. Check for disconnected orcracked vacuum hoses, stuckPCV valve, or clogged fuel filter.These problems may causesymptoms similar to ignitiontrouble.

3. Check electrical connectionsand optical trigger as explainedin the above sections. Check forloose or corroded connectionsand broken wires. Try a differentground connection point on theengine block or chassis. Checkdistributor for loose or mis-aligned parts in optical triggerassembly or advance mecha-nism.

4. XR3000 only. If a miss occursat high RPM, make sure anyballast resistance has beenbypassed.

5. Replace spark plugs. Check forproper heat range and gap size.Replace rotor, cap, spark plugwires, and coil.

1610/2000 9000-0700

APPENDIX

SMITHS TACH TECHNOTE

There are three types ofSmiths tachs: external current loop,internal current loop, and electronicpulse sensing (late models). Currentsensing tachs have a wire loop withtwo turns that passes the coil currentthrough a pickup at the tach. Thisloop can be external or internal.Electronic tachs have a trigger wirethat connects to the COIL- terminal.

MODIFICATION OFSMITHS CURRENTSENSING TACHS

Some older British vehiclesuse Smiths current sensing tachs.The wire from the coil positive termi-nal to the ignition switch passesthrough a current pickup at the tach.Installation of a Crane electronicignition may cause erratic operationof a current sensing tach, due to thehigher coil current. Modification ofthe current pickup to reduce the sig-nal level will usually eliminate theproblem.

1. Remove the Smiths tach fromthe instrument panel. The tachhas two threaded studs that areretained from the rear of thepanel. Label all wires to avoiderrors upon reinstallation.WARNING: Improper connec-tion may damage the tach.

2. Locate the external currentpickup on the rear of the tach.Refer to Figure 27. If your tachdoes not resemble this figurebut has coil and ignition keywires going to a plug, it mayhave an internal current pickup.In this case, it will be necessaryto disassemble the tach. Oncethe tach is disassembled, youcan use the same general pro-cedure as explained in step 3.

3. Modify the current pickupby removing one loop ofwire as shown in Figure 28.Note the direction that thewire passes through thepickup. If this direction isreversed, the tach will notfunction.

4. Recalibrate the tach forbest accuracy. Connect atest tach and have a helperrev the engine. Hold thetach in the same position itis mounted (orientation mayaffect calibration). Adjustthe calibration screw on theback of Smiths tach untilthe reading matches thetest tach. 4,000 RPM is areasonable engine RPM touse for calibration. Pleasenote that older Smithstachs may vary as much as500 RPM throughout theRPM range. This variationis not the fault of the igni-tion system.

5. Reinstall tach in instrumentpanel. Check all wire con-nections.

TROUBLESHOOTINGSMITHSELECTRONIC TACHS

In some cases the tachwill not read the correct RPMafter installation of a Crane elec-tronic ignition. A calibrationscrew on the back of the tachcan usually be adjusted to givecorrect readings. If the tach stillreads high, put a resistor in thetach wire to reduce the signallevel. Start with a 10K ohm 1/2watt. You can go as low as 1Kohm 1/2 watt. You can buy theresistors from Radio Shack orother electronic suppliers. Solderinto tach wire and wrap with elec-trical tape for protection.

TOCOIL

CURRENTPICKUP

CALIBRATIONADJUSTMENT

GND

PWR

WIRE LOOPS AND PASSESTHRU PICKUP TWICE

TOIGNITIONSWITCH

Figure 27. Smiths Tach

TOCOIL

CURRENTPICKUP

CALIBRATIONADJUSTMENT

GND

PWR

LOOP IS REMOVEDAND WIRE PASSES

THRU PICKUP ONCE

TOIGNITIONSWITCH

Figure 28. Tach Modification

1710/2000 9000-0700

POWER RELAY TECHNOTEXR3000 ignition systems require adirect +12V power connectionbetween the ignition switch and thepositive coil terminal. Most AMC,Chrysler, and Ford vehicles areequipped with OE resistance wiresor ballast resistors. All pre-1974 GMvehicles (without HEI ignition) areequipped with OE resistance wire.The ballast resistor or resistancewire must be bypassed to establish adirect +12V connection. In somecases, adding an ignition powerrelay circuit may be an easier alter-native.

PARTS REQUIRED FORPOWER RELAYINSTALLATION

30 Amp auto relay (Radio Shack275-226 or NAPA AR274)

3 Amp 400 volt diode (RadioShack 276-1144) or similar part(1N4004-1N4007 or 1N5404-1N5408)

14 Gauge stranded copper wireand crimp terminals

POWER RELAYINSTALLATION1. Refer to Figure 29. Install igni-

tion power relay only. Do notinstall diode at this time. Breakconnection from ignition switchto ignition coil positive terminaland connect to relay terminals86 and 30 as shown. Connectrelay terminal 85 to ground.Connect relay terminal 87 directto +12V on battery. Use 14gauge wire. Use 1/4” femalequick disconnect crimp termi-nals to connect to relay. Groundand +12V battery connectionscan be made with ring tonguecrimp terminals.

2. The ignition power relay willnow switch +12V power directfrom the battery to the coil posi-tive terminal when the ignitionswitch is turned on. Test properoperation of circuit by startingengine and then turning ignitionkey off. If engine continues torun, momentarily disconnectground (terminal 85) at relay tostop engine and proceed tostep 3. If engine stops runningwhen key is turned off, diodeinstallation is not required andinstallation of ignition powerrelay is complete.

3. Isolation diode. Most pre-1974GM vehicles equipped withDelcotron alternators with exter-nal regulator and most Fordvehicles with Autolite/Motorcraftalternators with external regula-tor will require isolation diodeinstallation. The isolation diodeprevents current from the regu-lator flowing back to the ignition

power relay when the key isturned off.

4. Locate terminal on voltage reg-ulator that is connected tocharge indicator light. This isterminal I on most Ford regula-tors and terminal 4 on most GMregulators. A top view of theregulator is shown in Figure 29to help with terminal identifica-tion. Break the wire going to thisterminal and solder the diode tothe wire ends. Observe diodepolarity indicated by a “band” onthe diode. Wrap diode andwires with electrical tape. Makesure diode or bare wires cannottouch any metal surface.

5. Verify proper operation ofcharging circuit and ignitionsystem. If charge indicator lightdoes not light up when key isturned on before engine isstarted, diode was probablyinstalled backwards.

IGNITIONSWITCH

GROUND

87

8630

85

IGNITIONPOWER RELAY

CUT

ADD DIODEOE BALLASTRESISTOR ORRESISTANCE WIRE

CHARGEINDICATOR

LIGHT

COIL

+

DIODE POLARITY

+12 VOLTFROM BATTERY

GMREGULATOR

F 2 3 4

FORDREGULATOR

I A S F

CUT

IGNITIONCOIL

Figure 29. XR3000 Ignition Power RelayHookup

1810/2000 9000-0700

12 VOLT POSITIVEGROUND TECH NOTE

Follow the standard installa-tion instructions for the optical trig-ger. Then follow the steps below toinstall the ignition module:

1. Mount the XR700 ignition mod-ule in any convenient locationon the firewall or a fender well.Avoid locations directly exposedto engine or exhaust headerheat or where water can splash.Do not mount it on the engine.Use the two sheet metal screwsprovided to mount the XR700module. Make sure that thewires will reach to the coil anddistributor with some slack forengine movement.

2. Use the wiring diagram inFigure 30. Remove all originalwires from coil. Connect originalwire that went to tach or ignitionswitch to XR700 black wire asshown. Connect XR700 yellowand red wires to coil as shown.Connect COIL+ terminal tochassis ground as shown.

3. Insert the threeterminals on theend of the cablefrom the opticaltrigger assemblyinto the Molexplug suppliedwith the installa-tion kit. Makesure that the indi-vidual wire colorsmatch from sideto side. Use asmall screwdriverto push the termi-nals all the wayinto the Molexplug. Then con-nect it to the mat-ing Molex plug onthe cable fromthe module. Ifyou must removea terminal, seeFigure 22 anduse the providedextraction tool.

4. Continue with the standardinstallation instructions startingat the Ballast Resistance sec-tion on page 13. If the XR700runs very hot to the touch after15 minutes of operation, youmay have excessive coil currentand you must add a ballastresistor. Use a Chrysler styletwo terminal ballast resistorsuch as Echlin ICR23 or WellsCR107.

CD TRIGGER TECHNOTE

Follow the standard installa-tion instructions for the optical trig-ger. Then follow the steps below toinstall the ignition module:

1. Mount the XR700 ignition mod-ule in any convenient locationon the firewall or a fender well.Avoid locations directly exposedto engine or exhaust headerheat or where water can splash.Do not mount it on the engine.Use the two sheet metal screws

provided to mount the XR700module. Make sure that thewires will reach to the CD igni-tion and distributor with someslack for engine movement.

2. Wiring hookup is shown inFigure 31.

3. Connect the XR700 black wireto ground on the chassis orengine block. An existing bolt orscrew can be used, but scrapeaway paint and corrosion toinsure a good ground.

4. Connect the XR700 yellow wireto the trigger input of the CDignition. This is typically a whitewire on Crane HI-6 and MSD-6units. Refer to the installationinstructions for the CD unit. TheXR700 generates a “points”type trigger signal.

5. Connect the XR700 red wire tothe same source of switched+12 volt power used for the CDignition.

6. Tach connection (skip if notequipped). Do not connect thetach wire to Coil-. Crane HI-6:connect tach to green HI-6 wire.MSD-6: connect tach to MSD-6

IGNITIONSWITCH

STARTCOIL

+

-12VBATTERY

REDYELLOW

BLACK



MOLEXPLUG



TRIGGER

RPMX100

CHASSISGROUND

EXISTING WIRE FROMTACH OR IGNITION SWITCH

TACHOMETERBRITISH VEHICLES -PLEASE READ SMITHSTACH TECH NOTE ONPAGE 16

NOTE: OLDER BRITISH POSITIVE GROUNDCOILS USE SW TO IDENTIFY COIL- AND CBTO IDENTIFY COIL+ TERMINALS

Figure 30. XR700 Positive Ground Hookup

1910/2000 9000-0700

tach terminal. Other CD units:unless instructed otherwise,connect tach wire to XR700 yel-low wire

7. Insert the three terminals on theend of the cable from the opti-cal trigger assembly into theMolex plug supplied with theinstallation kit. Make sure thatthe individual wire colors matchfrom side to side. Use a smallscrewdriver to push the termi-nals all the way into the Molexplug. Then connect it to themating Molex plug on the cablefrom the module. If you mustremove a terminal, see Figure22 and use the provided extrac-tion tool.

8. Continue with the standardinstallation instructions startingat the Optical TriggerAdjustment Procedure sectionon page 13.

TROUBLESHOOTINGCD TRIGGERAPPLICATIONS1. Pull the high voltage coil wire

out of the distributor and con-nect it to a KD Tools HEI testplug. Make sure the test plug isclipped to ground. Crank theengine. If sparks fire, the prob-lem is in the secondary system.

2. Check for +12 volts on XR700red wire with ignition key turnedon. If +12 volts is not present,trace wires to ignition switchand re-establish connection.

3. Try a different ground connec-tion point on the engine block ormetal chassis and repeat test.

4. Disconnect XR700 yellow trig-ger wire from CD unit. Connecta test light between the batterypositive terminal and XR700yellow wire. Crank the engine. Ifthe light flashes on and off, theoptical trigger and module areokay, but CD unit or coil mayhave failed.

5. Reconnect yellow trigger wire.Then check optical trigger asexplained in the standardXR700 troubleshooting sectionon page 15.

6. For rough or intermittent opera-tion, follow the steps given inthe standard XR700Troubleshooting section onpage 14.

IGNITIONSWITCH

+12VBATTERYCOIL

+

RED(SWITCHED +12V)

YELLOW(TRIGGER SIGNAL)

BLACK

GROUND TERMINALCONNECT TO ENGINEBLOCK OR CHASSIS



MOLEXPLUG



TRIGGER

NOTE:XR3000 NOTRECOMMENDED FORTRIGGERING CD UNITS

CRANE HI-6,MSD-6, OR OTHERTYPICAL CD UNIT

POINTS

WHITE WIREPREVIOUSLY

GOING TO POINTS

RED (SWITCHED +12V)

Figure 31. XR700 Hookup for Triggering CD System

2010/2000 9000-0700

USE OF TACHADAPTER TO OVER-COME ERRATIC TACHINDICATION

Some applications, such asFerrari and Porsche, may require theuse of Crane tach adapter part num-ber 8-2050 to overcome an erratictach indication. While the 8-2050 isprimarily sold as a motorcycle tachadapter, the hookup shown in Figure32 should solve most tach problems.The tach adapter can be ordereddirectly from Crane.

SWITCHED +12V

COIL

+ LONG BLACK

CRANE 8-2050TACH ADAPTER

SHORTBLACK

WHITE

TAPEUP

BLUE

GRAY

RPMX100

TACH

Figure 32. Tach Adapter Hookup

Documents

INSTALLATION INSTRUCTIONS for XR700 and XR3000static.summitracing.com/global/images/instructions/xr700 instructions.pdfbypassed. New XR700 and XR3000 modules have a diagnostic LED