2001 – 2020 GM TRAX 3 INSTRUCTION SHEET9. Mark the mounting holes with a Sharpie® or paint pen. If you cannot reach the mounting tabs near the cab, attach a Sharpie® or paint pen

IS-876

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1444 Fortress Street, Chico CA 95973 (800) 442-0056 / (530) 893-5209 Fax (530) 893-0204

www.TransferFlow.com 8/29/19 REV A

2001 – 2020 GM TRAX 3

INSTRUCTION SHEET

Installation Sheet–876

IS-876

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FOREWORD

Thank you for purchasing a Transfer Flow fuel tank system for your truck. Please read the following procedures

carefully before starting the installation.

This manual provides the necessary information for the installation of the Transfer Flow fuel system onto your

vehicle. All the information and instructions contained in this document are based on our annual model year

signoff. We update our instruction sheets based on information obtained during this model year signoff and

information provided by OEM companies and our customers. Changes to installation instructions may be made

at any time without notice. If you find something we missed or require any additional information, please feel

free to contact our Technical Support team at (800) 442-0056 x2.

Transfer Flow fuel systems and parts are intended to be used in conjunction with original manufacturer’s

equipment or Transfer Flow systems and components.

Our systems and components are not intended to be used in conjunction with other aftermarket fuel systems.

Attempting to use our products inappropriately may lead to malfunction and voids the warranty.

Supplemental Instruction:

• IS-484

• IS-642

• IS-880

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TABLE OF CONTENTS

FOREWORD ................................................................................................................................................... 2

NOTICE ........................................................................................................................................................... 4

SAFETY NOTES ............................................................................................................................................. 5

TOOLS & SUPPLIES REQUIREMENTS ..................................................................................................... 6

PARTS LIST/DIAGRAM ............................................................................................................................... 7

INSTALLATION INSTRUCTIONS .............................................................................................................. 8

SECTION 1: PREPARING THE VEHICLE ..................................................................................................................................................... 8

SECTION 2: PREPARING THE AUXILARY TANK .......................................................................................................................................... 10

SECTION 3: MOUNT THE TANK ......................................................................................................................................................... 103

SECTION 4: PLUMBING THE SYSTEM .................................................................................................................................................. 105

SECTION 5: WIRING THE SYSTEM ........................................................................................................................................................ 20

SECTION 6: ELECTRICAL POWER CONNECTION ........................................................................................................................................ 26

APPENDIX: TRAX 3TM

Wire Harness Detail ............................................................................................. 33

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NOTICE

This product is protected by state common law, copyright and/or patent. All legal rights therein are

reserved. The design, layout, dimensions, geometry, and engineering features shown in this product are

the exclusive property of Transfer Flow. This product may not be copied or duplicated in whole or part,

abstractly or fundamentally, intentionally or fortuitously, nor shall any design, dimension, or other

information be incorporated into any product or apparatus without prior written consent of Transfer

Flow.

Transfer Flow fuel systems and parts are intended to be used in conjunction with original

manufacturer’s equipment or Transfer Flow systems and components.

Our systems and components are not intended to be used in conjunction with other aftermarket systems.

Attempting to use our products inappropriately may lead to malfunction and voids the warranty. To

ensure that your transfer flow products perform appropriately for many years to come, we ask that you

follow these guidelines.

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SAFETY NOTES

Please read installation instructions before beginning the installation of the Transfer Flow fuel system.

If you would prefer your fuel system be professionally installed, please contact your local dealer or you

can browse our list of dealers in your area on our website at www.TransferFlow.com/installation.

Transfer Flow fuel systems are designed for use on stock OEM vehicles. We do our best to foresee how

our customers will use and modify their vehicles, but unfortunately, we cannot verify all aftermarket

modifications. If your vehicle has had any modifications to the chassis, suspension, fuel system, truck bed,

or wheel/tire size is different than stock, please call Transfer Flow before installing one of our fuel

systems.

• Work in a well-ventilated area.

• Always wear safety glasses.

• The Transfer Flow tank is heavy, please use proper lifting techniques when handling tank.

CAUTION: DO NOT HAVE ANY

OPEN FLAME OR HEAT

SOURCE CLOSE TO THE

INSTALLATION AREA.

CAUTION: DO NOT OVER

FILL.

PLEASE READ THE FOLLOWING PROCEDURES CAREFULLY BEFORE STARTING THE

INSTALLATION.

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TOOLS & SUPPLIES REQUIREMENTS

Before starting the installation process, review the entire installation instructions. If you have any questions

regarding the fuel system or the installation process, please contact Transfer Flow at (800) 442-0056.

Tool List: Sharpie

Long 1/8” drill bit

5/32” drill bit

½” Drill Bit

9/16” Drill Bit

7/8” Drill Bit

1 ¼” Drill Bit

Diagonal Cutters

Wire Strippers

7mm Socket

8mm Socket

Digital Multimeter

Hose Cutters

Electrical Tape

Sandpaper

Heat Gun

¾” Socket

0-50 ft/lb Torque Wrench

Ratchets to fit above sockets

Extensions

Telescoping Magnetic Pickup Tool

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PARTS LIST/DIAGRAM

Before beginning installation, verify all parts listed below are included in the installation kit. If there are any

missing or damaged parts, please contact Transfer Flow at (800) 442-0056.

NOTE: Pictured is a 50 Gallon Cross bed tank your tanks appearance may vary

Parts List: • Installation Sheet (IS-876)

• TRAX 3TM Computer with Module Kit (020-0A-16510)

• Auxiliary Fuel Tank

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INSTALLATION INSTRUCTIONS

SECTION 1: Preparing the Vehicle 1. Key the ignition ON and take note of the fuel gauge. Mark the level that the gauge is displaying in one

of the illustrations below

Figure 1: Fuel Gauge Template

NOTE: Use this diagram as a sketch pad. Draw the needle on the gauge as it appears in the truck.

2. Key the ignition off

3. Disconnect the battery.

4. Empty the bed of any movable objects.

5. Extinguish any heat sources in the area.

6. You will have one of the following different foot positions for mounting.

• Feet are on the side for 50-gallon aluminum diamond plate toolbox tank.

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• Feet are on the front and back sides of the 40-gallons cross the bed, 40 gallon toolbox, and 70-

gallon toolbox tanks.

• Feet are on the front and side of the 37-gallon, 50-gallon, 75-gallon, 100-gallon cross the bed

tank.

Feet on the side of

the tank

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SECTION 2: Preparing the Auxiliary Tank

7. Using a digital multi meter, measure the resistance signal at the auxiliary sending unit. Attach the leads

to the sending unit ground and signal (pictured below). With the tank resting on level ground, positioned

as if it were in the vehicle at empty, the resistance reading should match the table below +/- 3 Ω. Turn

the tank upside down so the float arm will fall into the full position. The resistance should read between

262-272 ohms.

Tank Gallons / type Resistance

37 cross bed 30 Ω

40 toolbox 41 Ω

40 cross bed 30 Ω

50 toolbox 23 Ω

50 cross bed 34 Ω

70 toolbox 31 Ω

75 cross bed 37 Ω

100 cross bed 37 Ω

Table 1: Resistance Guide

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Pre-Position the Tank in the Bed of the Truck 8. Place the tank in the bed of the truck. The tank should be spaced about 1” away from the head gate and

centered between the bed rails. If you are installing a toolbox tank make sure there is ample room to

open the lid. In all cases the fill opening should be on the driver’s side.

9. Mark the mounting holes with a Sharpie® or paint pen. If you cannot reach the mounting tabs near the

cab, attach a Sharpie® or paint pen to a long stick with some electrical tape.

10. Remove the tank from the mounting area.

11. Measure the mounting hole locations using the head gate and bed corrugations as reference lines.

12. Crawl under the truck.

13. Measure and mark the bed mounting holes on the bottom side of the bed. Use the head gate and bed

corrugations for reference.

14. Make sure the bolts have clearance and will not interfere or damage any surrounding hoses or electrical.

Signal Ground

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Figure 2: This cutaway drawing shows the head gate and bed corrugations.

15. Look at the marks you have created and make sure that a 1/2” bolt with the provided large shims will fit

in the area you have marked. It is OK to drill through the hat section of the bed, but you don’t want to

be drilling through the tall edge of the hat section. Make sure that your drilled hole will pierce through

the flat area of the hat section.

16. Move any wires, hoses or obstructions that may be scarred by a drill bit.

17. If you have any doubts of tank location, double check your measurements and reposition tank if needed.

If you move the tank you will need to remark the holes on the underside and double check your

measurements once again.

18. Get ready to start drilling (you will be drilling from the top down).

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SECTION 3: Mount the Tank

NOTE: The tank cannot be installed on a plastic bed liner insert. The section the tank sits on, or the entire liner will need to be

removed

19. Drill tank mounting pilot holes with a long 1/8” drill bit. Verify that the pilot holes came through where

marked underneath.

20. Prepare for two pilot holes for the hoses and wiring harness in the box side panel. These holes will be

enlarged with a hole-saw later. Place the holes in the side of the bed about 2” up from the bed floor.

The hole locations relative to the head gate will be different depending on the model year of the vehicle.

Place the holes about 3” apart, center to center. Before drilling the pilot holes, make sure you are not

drilling into anything valuable such as the outside of the bed, wiring, hoses, or other brackets. Do not

drill these holes in the head gate. If you do the fuel lines and electrical can be damaged.

21. Drill 2 1/8” pilot holes in the location above, verify good placement of the pilot holes and enlarge the

holes for the hoses and wiring harness with a 1 ¼” hole-saw. Insert the provided rubber grommets into

each hole.

22. Enlarge the tank mounting holes, drilled prior with the 1/8” drill bit with a 9/16” drill bit.

23. Attach the (3) sticky back foam strips to the bottom of the tank or truck bed. Position one strip next to

each mounting angle and one strip under the middle of the tank. These strips will prevent the tank from

rubbing directly on the bed.

NOTE: : If the bed of the truck has a sprayed on or plastic bed liner the rubber strips may not be required

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24. Place the thank in its final position

Figure 3: This is a 50 Gallon Cross bed tank your tank may be different then pictured

25. Place shims under the mounting brackets to prevent the corrugations from collapsing. It may be

necessary to cut the shim to properly fit some GM pickup boxes. See the next drawing.

NOTE: : Make sure tank is sitting on the bed corrugations, and not on the shims between the bed corrugations

26. Insert the 1/2” carriage head bolts through the mounting brackets and bed.

NOTE: If a 100 gallon cross the bed tank is being installed, it is highly recommended using the Telescoping magnetic pick up tool to

place the hard to reach bolts between tank and the bed rail on the rear side mounting holes as the distance to reach them is excessive

and may not be reachable with your arm

Corrugated Bed

TOP SHIM (1 OR 2) 040-11540

½” Flange Nut

Plate Washer

040-01-1015

Tank Mounting

Bracket

½” Carriage Bolt

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27. Secure fasteners with washers and nuts. Torque the nuts. Refer to Instruction Sheet #484 for proper

torque specifications

NOTE: On some vehicles it may be necessary to install the carriage bolt from under the truck. Place one shim on the head

side of the bolt before installing in the bed hole. On the tank feet use one shim and the ½” flange nut to secure the tank.

Double check your work: At this point the tank should be secured in the bed and all of the

hardware should be properly torqued. The grommets should be installed in the two holes for

the wire harness and hoses. If you are installing a toolbox, make sure the lid functions

without rubbing on the bedrails.

SECTION 4: Plumbing the System

Figure 4: Components underneath cover box on top of cross the bed tank

28. Make sure the fuel transfer hose is hooked up to the TFI fuel filter and the fuel filter is hooked to the

fuel pump.

Fuel Filter

TRAX3TM

Module

Fuel Pump

Fuel Transfer

Hose

Rollover Vent Valve

Vent Hose

Tank

mounting

bracket

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29. Route both hoses though one grommet in the pickup bed.

• For 2001-2004 vehicles follow steps 30 – 40

• For 2004.5 – 2010 vehicles continue to step 41

• Ford 2011 – Current vehicles continue to step 45

NOTE: Refer to illustrations on the following pages for tee installation

30. Open the fuel fill door and remove the three screws that retain the filler neck assembly using a 7mm

socket.

31. Crawl under the truck

32. Remove the clamp that attaches the fill hose to the OEM filler neck

33. Mark the fill hose 2” from the edge of the frame rail.

34. Pull the OEM filler neck down towards the ground until it is pointing under the bed side panel.

35. Remove the OEM filler neck completely from the vehicle. On 2001-2004 trucks you will see that the

OEM filler neck has an internal fill hose that runs inside of the 2” hose. Continue pulling on the filler

neck assembly until the internal fill hose is completely free from the truck. Do not cut the internal fill

hose.

36. Cut the 2” hose at the spot you marked in step 33. Remove an additional 1/2” of hose from the filler

neck end of the hose.

37. Place a large hose clamp on either side of the single tee.

38. Install the provided single tee into the fill hose. The 3/8” nipple of the tee needs to point towards the

outside of the truck and be rotated in an upwards fashion (10-2 o’clock position). Do not let the nipple

point downhill.

39. Insert the inner fill tube and filler neck into the 2” hose and torque the hose clamps. Refer to Instruction

Sheet #484 for proper torque specifications.

40. Re-install the OEM filler neck to the truck body using the three OEM screws.

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For 2004.5 – 2010 Vehicles follow steps 41 through 44

41. Find the 5/8” vent hose coming off of the OEM filler neck and cut it in half approximately 2” from the

driver’s side frame rail of the truck. This is where the 5/8” single tee is going to be installed.

42. Insert the two hose clamps onto the 5/8” vent hose. Insert the 5/8” single tee that is provided into the

OEM vent hose so that the 3/8” connection is positioned at the 10 o’clock or 2 o’clock position.

43. Pull the 3/8” hose coming off of the TFI auxiliary tank to the area where you have installed the single

tee. Cut the 3/8” hose down to size and install the small hose clamp and the hose onto the 3/8” side of

the single tee.

44. Secure and torque the provided hose clamps onto the large ends of the “single tee.” Refer to Instruction


For 2011 – Current Vehicles follow steps 45 through 49

45. Find the 1 ½” fill hose coming off the fuel filler door and cut in a location that allows ready and easy

access to the 3/8” fuel pump outlet house. This is where the fill tee is going to be installed.

46. Insert the two hose clamps onto the 1 ½” fill hose. Insert the 1 ½” single tee that is provided into the

OEM fill hose so that the 3/8” connection is pointed towards the bed of the truck.

5/8” vent

Hose Cut here to install the

tee

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47. Pull the 3/8” hose coming off of the TFI auxiliary tank to the area where you have installed the single

tee. Cut the 3/8” hose down to size and install the small hose clamp and the hose onto the 3/8” side of

the single tee. Make sure that the hose does not rub on anything hot or sharp or interfere with other

vehicle systems such as the e-brake cable, fill hose, electrical harness or TFI tank mounting bolts.

48. Secure and torque the provided hose clamps onto the large ends of the single tee. Refer to Instruction


49. Find the TFI vent hose that should be attached to the Rollover Valve (ROV) on the top of the in bed

auxiliary tank. Route this hose to a location under the truck where the end can be pointing down and

secure the hose with a zip-tie. Do not allow this hose to kink or get pinched shut by the zip tie. The

ROV helps vent the tank when you are filling it by venting the top of the tank to the atmosphere. Trim

the vent hose to length if necessary.

50. Double check your work: at this point all the hose clamps should be tight, and all the hoses should be

routed away from hot or sharp objects, exhaust, driveshaft, suspension as well as free from kinks.

SECTION 5: Wiring the System

51. Mount the TRAX3TM module to the tank. If you have a TRAX3TM Toolbox, the module will mount

inside of the toolbox underneath the cover box with supplied Velcro.

NOTE: The hole on the TRAX3TM module that the stud pushes through will need to be enlarged with a 7/32” drill bit

52. If you are installing a cross bed fuel tank, remove the cover box that is held down with Velcro. The

module will mount to the studs and be secured with a nut.

1 ½” Filler

Hose 3/8” aux

tank fuel

pump hose

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53. Find the TRAX3TM wire harness (reference last page of this manual for wire harness diagram).

54. Lay the wiring harness underneath the truck with the 10 pin connector and both 3 pin power connections

near the holes drilled in the bed and the red and black wires close to where the vehicle power

connections will be made.

55. Push the 10 pin connector, both 3 pin 2 wire GM weather pack connectors and the purple and black

wires through the unused grommet in the bed

56. Connect the fuel pump, aux sender, power, and 10-pin connector on the wiring harness to the TRAX3TM

module. The 10-pin connector needs the provided rectangle gasket installed before installing onto

module. The wiring connectors should plug together with a snap but you need to make sure that the

tongue and groove on each connector is properly lined up. These connectors are designed to only work

one way.

• Fuel Pump: Three pin connector w/tan & black wires to three pin connector w/orange and black wires.

• Aux Sender: Spade connector w/purple wire to the top center of sender.

• Ring terminal w/black wire to ground stud on sender.

• Power: Three pin connector w/red & black wires to three pin connector w/red and black wires.

• 10-Pin Connector to TRAX3TM Computer Module.

Mount module to

tank studs (2) and

secure with nuts (2)

TRAX3TM

Module

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Figure 5. Trax 3 module

57. Find the OEM wiring harness where it connects to the main tank sending unit.

58. Unplug the harness from the sending unit and peel back 5” of the plastic cover from the wire harness to

expose the wires inside.

Pay attention to the next few steps; they are critical to making sure the system works correctly!

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59. Find the OEM sending unit wires by looking at the wire colors on the chart below:

GM Sending Unit Wire Color Chart

Year Sender Signal Sender Ground

2001

Purple Wire

Orange with Black

Stripe 2002

2003

Solid Black, if there

are two solid black

wires, use the

thinner gauge wire.

2004

2005

2006

2007-

LBZ(Classic)

2007-LLM

Tan with Black

Stripe

2008

2009

2010

2011

2012

2013

2014

2015 Blue w/Purple

Stripe

Black w/Green

Stripe 2016

2017

2018

2019

2020

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60. If you cannot physically see the wire from sending unit plug to connection point, verify that you have

identified the correct sender signal and ground wires by performing the following test:

1. Set the digital multi meter to the continuity setting or ohms (Ω)

2. Touch the two leads together and take note of the value recorded _____ Ω

3. Place the red lead from the multimeter with a back probe into the sending unit plug on wire color the

above chart outlines as “signal”.

4. Using a wire piercing probe, probe the wire you suspect to be the correct sender signal wire and

check for < (1 + recorded value above) Ω resistance or continuity

5. If you get continuity or a < (1 + recorded value above) Ω resistance than label this wire as the signal

wire

6. If you do not, check other similarly colored wires until the required ohm value is found and label

that wire as signal wire.

7. Repeat the above steps for the sender ground wire

61. Cut the OEM sending unit signal wire (see wire color chart). Approximately 4” away from the sending

unit plug.

62. Strip 3/16” of insulation off each end of the sender signal wire you cut previously after verifying correct

wires. Repeat the verification steps found in step # 61 now that the wire is cut, one side should get

continuity / tone the other side should not. Label the end of the wire that does not have continuity or

tone as “S GAUGE”. Label the other end of the wire as “S SENDER”.

63. Locate the TFI wire harness and route the Yellow, White, Green, and Black with White Stripe wires to

the area that you are working. Make sure the wire harness is not rubbing on any sharp objects or

interfering with the vehicle’s other systems, such as the e-brake cable, fill and vent hoses or TFI tank

mounting bolts.

64. Connect the TFI YELLOW wire to the wire you labeled “S GAUGE”. Make this connection with the

18-22-gauge butt connector and insulate the connection with the supplied heat shrink.

65. Connect the TFI WHITE wire to the wire you labeled “S SENDER”. Make this connection with the 18-

22-gauge butt connector and insulate the connection with the supplied heat shrink.

66. Cut the OEM sending unit ground wire (see wire color chart). Approximately 4” away from the sending

unit plug.

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67. Strip 3/16” of insulation off each end of the ground wire you cut previously after verifying correct

wires. Repeat the verification steps found in step 61 now that the wire is cut, one side should get

continuity / tone the other side should not. Label the end of the wire that does not have continuity or

tone as “G GAUGE”. Label the other end of the wire as “G SENDER”.

68. Locate the TFI BLACK W/ WHITE STRIPE wire. Connect the TFI Black w/ White Stripe wire to the

sending unit side of the ground wire that you labeled “G SENDER”. Make this connection with the 18-

22-gauge butt connector and insulate the connection with the supplied heat shrink.

69. Locate the TFI GREEN wire. Connect the TFI GREEN wire to the gauge side of the ground wire that

you labeled “G GAUGE”. Make this connection with the 18-22-gauge butt connector and insulate the

connection with the supplied heat shrink.

Figure 6. See Wire Color Chart for OEM Ground and Sender Wire Colors, Wire Colors will Depend on Model Year.

70. Replace the plastic covering over the OEM harness and secure the TFI harness alongside of the OEM

harness. Wrap the connection of the two harnesses with electrical tape.

71. Reconnect the sending unit harness plug to the sending unit.

Sender Signal

Sender Ground

Gauge Ground Gauge Signal

Green Wire

Black w/White Stripe Wire

White Wire

(4) Butt Connectors

Provided by TFI

Yellow Wire

OEM WIRE HARNESS

TFI WIRE HARNESS

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72. Route the TFI harness toward the front of the truck. Secure it inside of the driver’s frame rail to the

OEM harness with zip ties. Do not attach the harness to the fuel lines, brakes lines, or any moving

components.

SECTION 6: Electrical Power Connection

73. Route the end of the harness with the red connector, the red power wire and black/white ground wire

towards the vehicle keyed on power location outlined below.

• 2001 to 2006: Either drill a 1-1/4” diameter hole into the firewall and, install a TFI 1-1/2” rubber

grommet, or use an existing OEM rubber grommet, to route the wire harness from the engine

compartment into the cab. Prior to drilling the hole, make sure that the hole will not interfere with any

other components on the vehicle, such as the floor mat. Insert the supplied 1-1/2” rubber grommet

and route the power wire and convolute through the grommet and into the cab.

• 2007 LMM to 2014: Route the wire harness to the fuse panel in the engine compartment. Keep the

wire harness away from sharp edges and heat sources such as the exhaust.

• 2015 to 2019: Route the wire harness to the fuse panel in the inside of the cab that is located on driver’s

side using the same method mentioned above in the section for 2001 to 2006.

• 2020: Route the wire harness to the fuse panel in the engine compartment. Keep the wire harness

away from sharp edges and heat sources such as the exhaust.

74. Connect the black/white ground wire to an OEM ground stud.

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Figure 7. Suggested ground stud location (frame behind driver’s side tire)

Attaching red power wire for all model years

75. Connect the red power wire to the vehicle’s fuse box. See chart on page 28

76. Remove the cover on the OEM fuse panel. Locate a keyed on mini fuse slot with an OEM current rating

of 15A or less for compatibility with the TAPA-CIRCUIT adapter.

77. Place the TFI 5A fuse in the top slot (with red pigtail) of the TAPA-CIRCUIT and install the TAPA-

CIRCUIT into the OEM fuse slot.

• Hook up the vehicle’s battery temporarily

• Key the ignition ON.

• Verify that power is supplied to the TAPA-CIRCUIT power wire when the vehicle’s ignition is

keyed ON and the power is disconnected when the ignition is OFF.

• Key the ignition OFF.

• Disconnect the battery.

78. Remove the TAPA-CIRCUIT and insert the OEM fuse into the bottom slot (closest to the spades) on the

TAPA-CIRCUIT assembly and reinstall the TAPA-CIRCUIT.

79. Trim the red wire to length from the TFI harness and crimp the insulated butt connector from the TAPA-

CIRCUIT to the TFI red power wire.

80. It may be necessary to cut a small notch in the edge of the fuse panel cover to accommodate the wire.

Tap-a-Fuse

OEM Fuse

Supplied 5

Amp Fuse

Insert this side into the

hot side of the fuse box

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Use this chart as a guide to find the correct fuse. Double check that the fuse you select is

only hot when the key is turned to the on position

GM Fuse Locations and Numbers

Year Location of Fuse

Panel

Fuse ID

Number

2001

In the cab, on the

left side of the

dash, by the drivers

door.

Fuse #1, Mini

style fuse

2002

2003

2004

2005

2006

2007

In engine

compartment,

driver side of

engine

compartment.

Mini style fuse

(Misc. Ign.)

2008

2009

2010

2011

2012

2013

2014

2015 In the cab, on

drivers side of the

instrument panel.

Spade

connector at

fuse #10

location 2016

2017

2018

2019

2020

In engine

compartment,

driver side of

engine

compartment.

Fuse 40 (Misc.

Ign.)

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• 2001-2014: Insert the Tap-a-Fuse into the fuse box. Make sure that the leg of the fuse furthest from

the wire sticking out the side is inserted into the hot side of the fuse connection. Verify that power is

supplied to the inline fuse adapter when the vehicle’s ignition is keyed ON and is disconnected when

the ignition is OFF.

• 2015-2019: Crimp spade connector onto in-line fuse holder and insert spade connector into fuse

location #10. Verify that power is supplied to the inline fuse adapter when the vehicle’s ignition is

keyed ON and is disconnected when the ignition is OFF.

• 2020: Insert the Tap-a-Fuse into the fuse box. Make sure that the leg of the fuse furthest from the

wire sticking out the side is inserted into the hot side of the fuse connection. Verify that power is

supplied to the inline fuse adapter when the vehicle’s ignition is keyed ON and is disconnected

when the ignition is OFF.

81. Replace the fuse panel cover.

82. Find the supplied TRAX3TM wiring harness and locate the end with the red connector.

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83. Feed the red connector through the grommet installed in the bullet point following step #73.

84. Assemble the provided Ram-Mount per diagram below (style may very).

Figure 8. Suction cup style mount

NOTE: The machine screws are packaged separately from the mount. The two screws are packaged with a strip of hook and loop tape

and alcohol wipes

Supplied machine

screws

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85. Find the TRAX3TM LCD and decide on a suitable mounting location. The most popular place to mount

the module is on the left-hand side of the dash board near the windshield pillar. Be sure the display

doesn’t block driver visibility. Other options include low on the dash near the transmission hump.

86. From inside the cab, pull enough of the TFI wire harnesses through the grommet to reach the location

you have chosen for the TRAX3TM LCD. Note that you will want to hide the wire harness behind

removable panels and carpeting as much as possible to keep the harness protected and out of sight.

Make sure the wire harness will not tangle or obstruct the parking brake, gas pedal or brake pedal.

87. Plug the red connector into the back of the TRAX3TM LCD, taking care to not bend or damage the pins

on the back of the LCD.

88. Mount the LCD in your chosen location using the supplied bracket and adhesive pad. Make sure to

clean both adhesive surfaces with the provided alcohol swab.

89. Secure the wire harness with zip ties. Make sure that the harness is not hanging loose or routed so that

the wire can get tangled in the e-brake mechanism or the driver’s feet. Make sure the harness is not

rubbing on anything that is sharp or hot.

90. Affix the Door Post Label and Tire & Loading Labels. If you cannot find your fuel tank on the Instruction

Sheet #642 weight list, then call Transfer flow Inc to get the correct information.

Figure 9. This kit comes with a new Tire & Loading Label. Update the new label and place it directly over the old label

Tire & Loading Label

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Figure 10. The Silver Label should be affixed to the door post

Congratulations on a successful installation!

Please refer to the Owner’s Manual supplied if you have any questions on the operation of this system.

Door Post Label

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APPENDIX: TRAX 3TM Wire Harness Detail

Documents

2001 – 2020 GM TRAX 3 INSTRUCTION SHEET9. Mark the mounting holes with a Sharpie® or paint pen. If you cannot reach the mounting tabs near the cab, attach a Sharpie® or paint pen