Mercruiser Electric

4

D

ELECTRICAL SYSTEMS

WIRING DIAGRAMS

4D-0 - WIRING DIAGRAMS 90-806535960 396

Table of ContentsPage

Wiring Colors for MerCruiser 4D-1. . . . . . . . . . . . . . . Wiring Diagrams 4D-2. . . . . . . . . . . . . . . . . . . . . . . . .

MCM 3.0LX 4D-2. . . . . . . . . . . . . . . . . . . . . . . . . . . MCM V-6 Alpha Thunderbolt IV 4D-3. . . . . . . . . . MCM V-6 Gen + Alpha Thunderbolt V Without Knock Sensor 4D-4. . . . . . . . . . . . . . . . . MCM V-6 Gen + Bravo Thunderbolt V WithKnock Sensor 4D-5. . . . . . . . . . . . . . . . . . . . . . . . . MCM V-8 Alpha Thunderbolt V With Knock Sensor 4D-6. . . . . . . . . . . . . . . . . . . . . . . . MCM V-8 Alpha Thunderbolt V Without Knock Sensor 4D-7. . . . . . . . . . . . . . . . . . . . . . . . MCM V-8 Bravo Thunderbolt V With Knock Sensor 4D-8. . . . . . . . . . . . . . . . . . . . . . . . MCM V-8 Bravo Thunderbolt V Without Knock Sensor 4D-9. . . . . . . . . . . . . . . . . . . . . . . . MIE V-8 (Bluewater) Thunderbolt V Without Knock Sensor 4D-10. . . . . . . . . . . . . . . . MIE (Bluewater) V-8 Thunderbolt V With Knock Sensor 4D-11. . . . . . . . . . . . . . . . . . . . . . . MIE (Ski) V-8 Thunderbolt V Without Knock Sensor 4D-12. . . . . . . . . . . . . . . . . . . . . . . MCM V-8 Alpha and Bravo EFI and MPI (Including Gen +) Engines 4D-13. . . . . . . . . . . . . MCM 262 Magnum EFI Gen + Alpha and Bravo 4D-14. . . . . . . . . . . . . . . . . . . . . . . . . . .

PageAll EFI and MPI Inboard and Ski Engines (Except 350 Magnum MPI Gen + Tournament Ski [Black Scorpion]) 4D-15. . . . . . MIE 350 Magnum MPI Gen + Tournament Ski (Black Scorpion) 4D-16. . . . . . . MCM 262 Magnum EFI Gen + Alpha 4D-17. . . . MCM 262 Magnum EFI Gen + Bravo 4D-18. . . . MCM 5.7L EFI Bravo 4D-19. . . . . . . . . . . . . . . . . . MCM 5.7L EFI Alpha 4D-20. . . . . . . . . . . . . . . . . . MCM 350 MPI Bravo (Including Gen + Engines) 4D-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . MIE 350 Magnum MPI Gen + Tournament Ski (Black Scorpion) 4D-22. . . . . . . MCM 7.4LX EFI / MIE 350 Magnum EFI Gen + Tournament Ski / 7.4L EFI Bluewater Inboard 4D-23. . . . . . . . . . . . . . . . . . . . MCM 7.4LX MPI / 454 / 502 MPI Magnum / MIE 454/502 Magnum MPI 4D-24. . . . . . . . . . . MCM Quicksilver Instrumentation 4D-25. . . . . . . MIE Quicksilver Instrumentation 4D-26. . . . . . . . Dual Station Wiring (Using a Neutral Safety Switch in Only One Remote Control) 4D-27. . . . Dual Station Wiring (Using A Neutral Safety Switch In Both Remote Controls) 4D-28. . . . . . . Dual Station Wiring (Using a Neutral Safety Switch in Engine Wiring Harness) 4D-29. . . . . . MPI Wiring Diagram 4D-30. . . . . . . . . . . . . . . . . . EFI Wiring Diagram 4D-34. . . . . . . . . . . . . . . . . . .

4D - WIRING DIAGRAMS

WIRING DIAGRAMS - 4D-190-806535960 396

Wiring Colors for MerCruiserNOTE: Color codes listed below DO NOT apply to EFI and MPI system harnesses.

BIA COLOR CODE AND ABBREVIATIONS WHERE USED

BLACK (BLK) All Grounds

BROWN (BLU) Reference Electrode - MerCathode

ORANGE (ORN) Anode Electrode-MerCathode

LT. BLUE/WHITE (LT BLU/WHT) Trim - ”Up” Switch

GRAY (GRY) Tachometer Signal

GREEN/WHITE (GRN/WHT) Trim - ”Down” Switch

TAN (TAN) Water Temperature Sender to Gauge

LIGHT BLUE (LIT BLU) Oil Pressure Sender to Gauge

PINK (PNK) Fuel Gauge Sender to Gauge

BROWN/WHITE (BRN/WHT) Trim Sender to Trim Gauge

PURPLE/WHITE (PUR/WHT) Trim - ”Trailer” Switch

RED (RED) Unprotected Wires from Battery

RED/PURPLE (RED/PUR) Protected (Fused) Wires from Battery

RED/PURPLE (RED/PUR) Protected (+12V) to Trim Panel

ORANGE (ORN) Alternator Output

PURPLE/YELLOW (PUR/YEL) Ballast Bypass

PURPLE (PUR) Ignition Switch (+12V)

YELLOW/RED (YEL/RED) Starter Switch to Starter Solenoid to Neutral StartSwitch


Wiring DiagramsMCM 3.0LX

1

2

3

2

3

4

5

6

32

1

1

3

1

4

C

B

D

A2

NOTE : GRAY lead for use with service tachometer.A -Ignition System1 -Distributor2 -Shift Cutout Switch3 -Filter4 -Ignition Coil

B -Starting System1 -Alternator2 -Electric Choke3 -Ground Bolt4 -Starter5 -Circuit Breaker6 -Starter Slave Solenoid

C-Audio Warning System1 -Water Temperature2 -Drive Unit Oil Level (If Equipped)3 -Oil Pressure Switch

D -Instrumentation System1 -Oil Pressure Sender2 -Water Temperature Sender3 -Trim Sender


MCM V-6 Alpha Thunderbolt IV

71877

C

B

D

A

1 2

3

12

3

12

3

1

2

3

45

6

78

A -Ignition System1 -Distributor2 -Shift Cutout Switch3 -Ignition CoilB -Starting System1 -Alternator2 -Electric Choke3 -Ground Bolt4 -Starter5 -Circuit Breaker6 -Starter Slave Solenoid7 -Electric Fuel Pump8 -Oil Pressure Cut-Off Switch

C-Audio Warning System1 -Water Temperature2 -Drive Unit Oil Level (If Equipped)3 -Oil Pressure SwitchD -Instrumentation System1 -Oil Pressure Sender2 -Water Temperature Sender3 -Trim Sender


MCM V-6 Gen + Alpha Thunderbolt V Without Knock Sensor

1

2

3

1

2

3

4 5

6

12

3

1

3

A

B

2

8 774813

NOTE

C

D

NOTE: TAN/BLU wire is not used at distributor.A -Ignition System1 -Distributor2 -Shift Cutout Switch3 -Ignition CoilB -Starting System1 -Alternator2 -Electric Choke3 -Ground Bolt4 -Starter5 -Circuit Breaker6 -Starter Slave Solenoid7 -Electric Fuel Pump8 -Oil Pressure Cut-Off Switch



MCM V-6 Gen + Bravo Thunderbolt V Without Knock Sensor

1

1

23

45

6

12

3

1

3

A

2

8 7

2

74814

NOTE

C

B

D

A

NOTE: TAN/BLU wire is not used at distributor.A -Ignition System1 -Distributor2 -Ignition CoilB -Starting System1 -Alternator2 -Electric Choke (2 BBL Only)3 -Ground Bolt4 -Starter5 -Circuit Breaker6 -Starter Slave Solenoid7 -Fuel Pump8 -Oil Pressure Cut-Off Switch



MCM V-8 Alpha Thunderbolt V With Knock Sensor

74593

1 2

3

1

23

45

6

12

3

1 23

4

NOTE

C

B

D

A

NOTE: TAN/BLU wire is not used at distributor.A -Ignition System1 -Distributor2 -Ignition Coil3 -Shift Cut-Out Switch4 -Knock SensorB -Starting System1 -Alternator2 -Electric Choke3 -Ground Bolt4 -Starter5 -Circuit Breaker6 -Starter Slave Solenoid



MCM V-8 Alpha Thunderbolt V Without Knock Sensor

74593

2

1

2 3

45

6

12

3

12

33

NOTE

C

B

D

A

NOTE: TAN/BLU wire is not used at distributor.A -Ignition System1 -Distributor2 -Ignition Coil3 -Shift Cut-Out SwitchB -Starting System1 -Alternator2 -Electric Choke3 -Ground Bolt4 -Starter5 -Circuit Breaker6 -Starter Slave Solenoid



MCM V-8 Bravo Thunderbolt V With Knock Sensor

2

1

2 3

4 5

6

1

2

3

12

3

3

1

73996

NOTE 1

C

B

D

A

NOTE: TAN/BLU wire is not used at distributor.A -Ignition System1 -Distributor2 -Ignition Coil3 -Knock SensorB -Starting System1 -Alternator2 -Electric Choke3 -Ground Bolt4 -Starter5 -Circuit Breaker6 -Starter Slave Solenoid



MCM V-8 Bravo Thunderbolt V Without Knock Sensor

2

6

1

2

3

12

3

1

74592

1

2 3

45

NOTE 1

C

B

D

A

NOTE: TAN/BLU wire is not used at distributor.A -Ignition System1 -Distributor2 -Ignition CoilB -Starting System1 -Alternator2 -Electric Choke3 -Ground Bolt4 -Starter5 -Circuit Breaker6 -Starter Slave Solenoid



MIE V-8 (Bluewater) Thunderbolt V Without Knock Sensor

2

6

1

1 2

1

74592

1

2 3

45

2

3

NOTE 1

NOTE 2

7

C

B

D

A

NOTE 3

NOTE 1: Taped back BROWN/WHITE wire may be used for an accessory. LOAD MUST NOT EXCEED 5 AMPS.

NOTE 2: Taped back TAN/BLUE wire not used.

NOTE 3: 5.7L Models will have WHITE/GREEN wire and 7.4L / 8.2L Models will have BLACK wire.A -Ignition System1 -Distributor2 -Ignition CoilB -Starting System1 -Alternator2 -Electric Choke3 -Ground Bolt4 -Starter5 -Circuit Breaker6 -Starter Slave Solenoid7 -Neutral Safety Switch

C-Audio Warning System1 -Water Temperature Switch2-Transmission Fluid Temperature Switch3 -Oil Pressure SwitchD -Instrumentation System1 -Oil Pressure Sender2 -Water Temperature Sender3 -Trim Sender


MIE (Bluewater) V-8 Thunderbolt V With Knock Sensor

2

6

1

12

1

74160

1

2 3

4 5

2

3

NOTE 1

3

7

NOTE 2

C

B

D

A

NOTE 3



NOTE 3: 5.7L Models will have WHITE/GREEN wire and 7.4L / 8.2L Models will have BLACK wire.A -Ignition System1 -Distributor2 -Ignition Coil3 -Knock SensorB -Starting System1 -Alternator2 -Electric Choke3 -Ground Bolt4 -Starter5 -Circuit Breaker6 -Starter Slave Solenoid7 -Neutral Safety Switch



MIE (Ski) V-8 Thunderbolt V Without Knock Sensor

2

6

1

12

1

74160

1

2 3

45

23

NOTE 1

NOTE 2

7

C

B

D

A

NOTE 3



NOTE 3: 5.7L Models will have WHITE/GREEN wire and 7.4L / 8.2L Models will have BLACK wire.A -Ignition System1 -Distributor2 -Ignition CoilB -Starting System1 -Alternator2 -Electric Choke3 -Ground Bolt4 -Starter5 -Circuit Breaker6 -Starter Slave Solenoid7 -Neutral Safety Switch



MCM V-8 Alpha and Bravo EFI and MPI (Including Gen +) Engines

71693

b

c

a

1

2

32

1

1

23

4

5

dC

B

A

A– Audio Warning System1 - Drive Unit Oil Level2 - Oil Pressure SwitchB– Instrumentation System1 - Trim Sender2 - Water Temperature Sender3 - Oil Pressure SenderC - Charging and Starting System1 - Starter Slave Solenoid2 - Circuit Breaker3 - Starter4 - Ground Stud5 - Alternator

a - Harness Connector to EFI System Harnessb - Positive (+) Power Wire to EFI System Harnessc - Auxiliary Tachometer Leadd -90 Amp Fuse (DO NOT Remove)


MCM 262 Magnum EFI Gen + Alpha and Bravo

74925

b

c

a

1

2

32

1

1

2

3

4

5

d

C

B

A

76

A– Audio Warning System1 - Drive Unit Oil Level2 - Oil Pressure SwitchB– Instrumentation System1 - Trim Sender2 - Water Temperature Sender3 - Oil Pressure SenderC - Charging and Starting System1 - Starter Slave Solenoid2 - Circuit Breaker

3 - Starter4 - Ground Stud5 - Alternator6 - Oil Pressure Cut-Off Switch7 - Fuel Pump

a - Harness Connector to EFI System Harnessb - Positive (+) Power Wire to EFI System Harnessc - Auxiliary Tachometer Leadd -90 Amp Fuse (DO NOT Remove)


All EFI and MPI Inboard and Ski Engines Except 350 Magnum MPI Gen +Tournament Ski ”Black Scorpion”

2

b

c

a

1

3

5

4

6

12

1

2

C

B

A

NOTE 1

d

NOTE 1: Taped back BROWN and BLACK wire may be used for an accessory. LOAD MUST NOT EXCEED 5AMPSA - Audio Warning System1 - Oil Pressure Switch2 - Transmission Fluid Temperature

Switch

B - Instrumentation System1 - Oil Pressure Sender2 - Water Temperature Sender

C - Charging and Starting System1 - Alternator 2 - Ground Stud3 - Starter4 - Circuit Breaker5 - Starter Slave Solenoid6 - Neutral Safety Switch

a - Positive Power Wire To EFI System Harnessb - Harness Connector To EFI System Harnessc - Auxiliary Tachometer Leadd - 90 Amp. System Fuse


MIE 350 Magnum MPI Gen + Tournament Ski (Black Scorpion)

2

b

c

a

1

3

5

4 6

12

1

2

C

B

A

7

NOTE 1

74892

8

NOTE 1: Taped back BROWN and BLACK wire may be used for an accessory. LOAD MUST NOT EXCEED 5AMPSA - Audio Warning System1 - Oil Pressure Switch2 - Transmission Fluid Temperature

Switch

B - Instrumentation System1 - Oil Pressure Sender2 - Water Temperature Sender

C - Charging and Starting System1 - Alternator 2 - Ground Stud3 - Starter4 - Circuit Breaker5 - Starter Slave Solenoid6 - Neutral Safety Switch7 - 90 Amp. System Fuse8 - Knock Sensor

a - Positive Power Wire To EFI System Harnessb - Harness Connector To EFI System Harnessc - Auxiliary Tachometer Lead


MCM 262 Magnum EFI Gen + Alpha

74929

2

3

4

5

6

7

8

9

10

11

1

12

13

14

15

16

17

18

19

20

21

NOTE 1

NOTE: All BLACK wires with a ground symbol are interconnected within the EFI system harness.

NOTE 1: As a mid year (96-1/2) model change, the EFI (Throttle Body Injection) models have the lanyard stopconnector removed from the wiring harness. The dual engine capability is relocated by routing the YEL wire to theData Link Connector (DLC).1 - Vapor Separator Tank (VST)2 - Throttle Body3 - Distributor4 - Coil5 - Knock Sensor (KS) Module6 - Data Link Connector (DLC)7 - Manifold Absolute Pressure (MAP) Sensor8 - Knock Sensor9 - Idle Air Control (IAC)10- Throttle Position (TP) Sensor

11- Engine Coolant Temperature Sensor (ECT)12- Electronic Control Module (ECM)13- Fuel Pump Relay14- Ignition/System Relay15- Fuel Pump Fuse16- ECM/Ignition Feed/KS Module/Injectors Fuse17- ECM/DLC/Battery Fuse18- Harness Connector To Starting/Charging Harness19- Shift Cutout Switch20- Lanyard Stop Switch21- Positive Power Wire To Engine Circuit Breaker


MCM 262 Magnum EFI Gen + Bravo

74928

2

3

4

5

6

7

8

9

10

11

1

12

13

14

15

16

17

18

19

NOTE 1


NOTE 1: As a mid year (96-1/2) change, the EFI (Throttle Body Injection) models have the lanyard stop connectorremoved from the wiring harness. The dual engine capability is relocated by routing the YEL wire to the Data LinkConnector (DLC).1 - Vapor Separator Tank (VST)2 - Throttle Body3 - Distributor4 - Coil5 - Knock Sensor (KS) Module6 - Data Link Connector (DLC)7 - Manifold Absolute Pressure (MAP) Sensor8 - Knock Sensor9 - Idle Air Control (IAC)10- Throttle Position (TP) Sensor

11- Engine Coolant Temperature Sensor (ECT)12- Electronic Control Module (ECM)13- Fuel Pump Relay14- Ignition/System Relay15- Fuel Pump Fuse16- ECM/Ignition Feed/KS Module/Injectors Fuse17- ECM/DLC/Battery Fuse18- Harness Connector To Starting/Charging Harness19- Positive (+) Power Lead To Engine Circuit Breaker


MCM 5.7L EFI Bravo

73717

2

3

4

5

6

7

8

9

10

11

1

12

13

14

15

16

17

18

19

20

21

NOTE 1


NOTE 1: As a mid year (96-1/2) change, the EFI (Throttle Body Injection) models have the lanyard stop connectorremoved from the wiring harness. The dual engine capability is relocated by routing the YEL wire to the Data LinkConnector (DLC).1 - Vapor Separator Tank (VST)2 - Throttle Body3 - Distributor4 - Coil5 - Knock Sensor (KS) Module6 - Data Link Connector (DLC)7 - Manifold Absolute Pressure (MAP) Sensor8 - Knock Sensor9 - Idle Air Control (IAC)10- Throttle Position (TP) Sensor11- Engine Coolant Temperature Sensor (ECT)

12- Electronic Control Module (ECM)13- Fuel Pump Relay14- Ignition/System Relay15- Fuel Pump Fuse16- ECM/Ignition Feed/KS Module/Injectors Fuse17- ECM/DLC/Battery Fuse18- Harness Connector To Starting/Charging Harness19- Harness Connector To Lanyard Stop Switch (Optional)20- Harness Connector For Dual Engine Data Link Cable21- Positive (+) Power Wire To Engine Circuit Breaker


MCM 5.7L EFI Alpha

2

3

4

5

6

7

8

9

10

11

1

12

13

14

15

16

17

18

19

20

21

22

NOTE 1


NOTE 1: As a mid year (96-1/2) model change, the EFI (Throttle Body Injection) models have the lanyard stopconnector removed from the wiring harness. The dual engine capability is relocated by routing the YEL wire to theData Link Connector (DLC).1 - Vapor Separator Tank (VST)2 - Throttle Body3 - Distributor4 - Coil5 - Knock Sensor (KS) Module6 - Data Link Connector (DLC)7 - Manifold Absolute Pressure (MAP) Sensor8 - Knock Sensor9 - Idle Air Control (IAC)10- Throttle Position (TP) Sensor11- Engine Coolant Temperature Sensor (ECT)

12- Electronic Control Module (ECM)13- Fuel Pump Relay14- Ignition/System Relay15- Fuel Pump Fuse16- ECM/Ignition Feed/KS Module/Injectors Fuse17- ECM/DLC/Battery Fuse18- Harness Connector To Starting/Charging Harness19- Harness Connector To Lanyard Stop Switch (Optional)20- Harness Connector For Dual Engine Data Link Cable21- Positive (+) Power Wire To Engine Circuit Breaker22- Shift Cutout Switch


MCM 350 MPI Bravo (Including Gen + Engines)

74182

1

2

3

4

5

6

7

8

910

11

12

13

14

15

16

17

18

19

20

21

GRY

NOTE 1

Note: All BLACK Wires With A Ground Symbol Are Interconnected Within The EFI System Harness.

NOTE 1: As a mid year (96-1/2) model change, the MPI (Multi Port Injection) models have the lanyard stop connec-tor and dual engine data link connector removed from the wiring harness. The dual engine capability is relocatedby routing the YEL wire to the Data Link Connector (DLC).1 - Vapor Separator Tank (VST)2 - Throttle Body3 - Distributor4 - Coil5 - Electronic Spark Control (KS) Module6 - Data Link Connector (DLC)7 - Manifold Absolute Pressure (MAP) Sensor8 - Knock Sensor9 - Idle Air Control (IAC)10- Throttle Position (TP) Sensor11- Engine Coolant Temperature (ECT) Sensor

12- Electronic Control Module (ECM)13- Fuel Pump Relay14- Ignition/System Relay15- Fuse (15 Amp) Fuel Pump16- Fuse (15 Amp) ECM/DLC/Battery17- Fuse (10 Amp) ECM/Injector/Ignition/Knock Module18- -Harness Connector To Starting/Charging Harness19- Harness Connector To Lanyard Stop Switch (Optional)20- Harness Connector For Dual Engine Data Link Cable21- Positive (+) Power Wire To Engine Circuit Breaker


MIE 350 Magnum MPI Gen + Tournament Ski (Black Scorpion)

74893

1

2

3

4

5

6

7

10

11

12

13

14

15

16

17

18

8

9

NOTE 1


NOTE 1: As a mid year (96-1/2) model change, the MPI (Multi Port Injection) models have the lanyard stop connec-tor removed from the wiring harness. The dual engine capability is relocated by routing the YEL wire to the DataLink Connector (DLC).1 - Fuel Pump2 - Distributor3 - Coil4 - Electronic Spark Control (KS) Module5 - Data Link Connector (DLC)6 - Manifold Absolute Pressure (MAP) Sensor7 - Idle Air Control (IAC)8 - Throttle Position (TP) Sensor9 - Engine Coolant Temperature (ECT) Sensor

10- Electronic Control Module (ECM)11- Fuel Pump Relay12- Ignition/System Relay13- Fuse (15 Amp) Fuel Pump14- Fuse (15 Amp) ECM/DLC/Battery15- Fuse (10 Amp) ECM/Injector/Ignition/Knock Module16- Harness Connector To Starting/Charging Harness17- Harness Connector To Lanyard Stop Switch (Optional)18- Positive (+) Power Wire To Engine Circuit Breaker


MCM 7.4LX EFI / MIE 350 Magnum EFI Gen + Tournament Ski / 7.4L EFI BluewaterInboard

75001

2

3

4

5

6

7

8

9

10

11

1

12

13

14

15

16

17

18

19

NOTE 1


NOTE 1: As a mid year (96-1/2) model change, the MPI (Multi Port Injection) models have the lanyard stop connec-tor removed from the wiring harness. The dual engine capability is relocated by routing the YEL wire to the DataLink Connector (DLC).1 - Fuel Pump2 - Throttle Body3 - Distributor4 - Coil5 - Electronic Spark Control (KS) Module6 - Data Link Connector (DLC)7 - Manifold Absolute Pressure (MAP) Sensor8 - Knock Sensor9 - Idle Air Control (IAC)10- Throttle Position (TP) Sensor

11- Engine Coolant Temperature (ECT) Sensor12- Electronic Control Module (ECM)13- Fuel Pump Relay14- Ignition/System Relay15- Fuse (15 Amp) Fuel Pump16- Fuse (15 Amp) ECM/DLC/Battery17- Fuse (10 Amp) ECM/Injector/Ignition/Knock Module18- -Harness Connector To Starting/Charging Harness19- Positive (+) Power Wire To Engine Circuit Breaker


MCM 7.4LX MPI / 454 / 502 Magnum MPI / MIE 454 / 502 Magnum MPI

71692

1

2

3

4

5

6

7

8

9

1011

12

13

14

15

16

17

18

19

20

21

22

NOTE 1


NOTE 1: As a mid year (96-1/2) model change, the MPI (Multi Port Injection) models have the lanyard stop connec-tor removed from the wiring harness. The dual engine capability is relocated by routing the YEL wire to the DataLink Connector (DLC).1 - Vapor Separator Tank (VST)2 - Throttle Body3 - Distributor4 - Coil5 - Knock Sensor (KS) Module6 - Data Link Connector (DLC)7 - Manifold Absolute Pressure (MAP) Sensor8 - Intake Air Temperature (IAT) Sensor9 - Knock Sensor10- Idle Air Control (IAC)11- Throttle Position (TP) Sensor

12- Engine Coolant Temperature (ECT) Sensor13- Electronic Control Module (ECM)14- Fuel Pump Relay15- Ignition Relay16- Fuel Pump Fuse (15 Amp)17- Injector Fuse (15 Amp) ECM, DLC, Battery18- ECM Fuse (10 Amp) ECM/Ignition/Injector/Knock Sensor

Module19- Harness Connector to Starting/Charging Harness20- Harness Connector to Lanyard Stop Switch (Optional)21- Harness Connector for Dual Engine Data Link Cable22- Positive (+) Power Wire to Engine Circuit Breaker


MCM Quicksilver Instrumentation

To E

ngin

e H

arne

ss

NOTE 1

NOTE 1

NOTE 1

NOTE 2

74046

2

5

6

7

8

9

13 4

NOTE 1: Connect wires together with screw and hex nut. Apply Quicksilver Liquid Neoprene to connection andslide rubber sleeve over connection.NOTE 2: Power for a second fused accessory panel may be taken from this connection. Load MUST NOT exceed35-40 amps. Panel ground wire MUST BE connected to instrument terminal that has an 8 gauge BLACK (ground)harness wire connected to it.1 - Tachometer2 - Audio Warning Buzzer (if Equipped)3 - Oil Pressure4 - Water Temperature5 - Battery Meter6 - Ignition Switch7 - Trim Indicator8 - To 12 Volt Source (PURPLE wire connection)9 - 20 Ampere Fuse


MIE Quicksilver Instrumentation

74274

BS

I

1

2

3 4 5

6

8

7

NOTE 1: Connect wires together with screw and hex nut. Apply Quicksilver Liquid Neoprene to connection andslide rubber sleeve over connection.NOTE 2: Power for a second fused accessory panel may be taken from this connection. Load MUST NOT exceed35-40 amps. Panel ground wire MUST BE connected to instrument terminal that has an 8 gauge BLACK (ground)harness wire connected to it.1 - Tachometer2 - Audio Warning Buzzer (if Equipped)3 - Oil Pressure4 - Water Temperature5 - Battery Meter6 - Ignition Switch7 - To 12 Volt Source (PURPLE wire connection)8 - 20 Ampere Fuse


Dual Station Wiring (Using a Neutral Safety Switch in Only One Remote Control)

72940

BRN/WHT

PUR

GRY

BLK

YE

L/R

ED

NOTE 3

PU

R

PU

R

GR

Y

BLK

BLK

LT. B

LU

BLK

PU

R

TAN

PU

R

BLK

RED/PUR

ORN

PUR

PU

R

GR

Y BLK

BLK

PU

R

LT. B

LU

BLK

PU

R

TAN

OR

N

RE

D/P

UR

PU

R

BLK NOTE 2

NOTE 3

NOTE 1

YEL/RED

YE

L/R

ED

NOTE 3

NOTE 3BRN/WHTNOTE 1

YEL/RED

YEL/RED

YEL/RED

BS I

SEND SEND SEND

LT

LT

LT

LT

SW

12V12V 12V 12V

GND

UNSW

SIG

GND GND GND

SEND SEND SEND

LT

LT

LT

LT

SW

12V12V 12V 12V

GND

UNSW

SIG

GND GND GND

3 4 51 2

A

B

1 2 3 4 5

6

7

NOTE 1: BROWN/WHITE wire is taped back at instrument end. If installing on boat that is equipped with MerCruis-er stern drive, BROWN/WHITE wire is connected to trim sender terminal block. If installing on MerCruiser Inboard,BROWN/WHITE wire is taped back at engine end, or it may be used for an accessory (limit 5 amperes)NOTE 2 : An accessory fuse panel may be connected at this location. The combined current draw of the primarystation and secondary station MUST NOT exceed 35 amperes.NOTE 3 : Connect wires together with screw and hex nut. Apply Quicksilver Liquid Neoprene to connection andslide rubber sleeve over connection.

A - Secondary Station1 - Stop -Start Panel2 - Tachometer3 - Oil Pressure4 - Water Temperature5 - Battery Meter

B - Primary Station1 - Ignition Switch2 - Tachometer3 - Oil Pressure4 - Water Temperature5 - Battery Meter6 - To Engine7 - 20 Ampere Fuse


Dual Station Wiring (Using A Neutral Safety Switch In Both Remote Controls)

72941

BRN/WHT

PUR

GRY

BLK

YE

L/R

ED

NOTE 3

PU

R

PU

R

GR

Y

BLK

BLK

LT. B

LU

BLK

PU

R

TAN

PU

R

BLK

RED/PUR

ORN

PUR

PU

R

GR

Y

BLK B

LK

PU

R

LT. B

LU

BLK

PU

R

TAN

OR

N

RE

D/P

UR

PU

R

BLK

NOTE 2

NOTE 3

NOTE 1

YEL/RED

YE

L/R

ED

NOTE 3 BRN/WHTNOTE 1

YEL/RED

YEL/RED

YEL/RED NOTE 3

NOTE 3

YE

L/R

ED

SEND SEND SEND

LT

LT

LT

LT

SW

12V12V 12V 12V

GND

UNSW

SIG

GND GND GND

BS

I

SEND SEND SEND

LT

LT

LT

LT

SW

12V12V 12V 12V

GND

UNSW

SIG

GND GND GND

3 4 51 2

1 2 3 4 5

7

6

YEL/RED

A

B

NOTE 1: BROWN/WHITE wire is taped back at instrument end. If installing on boat that is equipped with MerCruis-er stern drive, BROWN/WHITE wire is connected to trim sender terminal block. If installing on MerCruiser Inboard,BROWN/WHITE wire is taped back at engine end, or it may be used for an accessory (limit 5 amperes)NOTE 2 : An accessory fuse panel may be connected at this location. The combined current draw of the primarystation and secondary station MUST NOT exceed 35 amperes.NOTE 3 : Connect wires together with screw and hex nut. Apply Quicksilver Liquid Neoprene to connection andslide rubber sleeve over connection.

A - Secondary Station1 - Stop -Start Panel2 - Tachometer3 - Oil Pressure4 - Water Temperature5 - Battery Meter



Dual Station Wiring (Using a Neutral Safety Switch in Engine Wiring Harness)

72942

BRN/WHT

PUR

GRY

BLK

YE

L/R

ED

NOTE 3

PU

R

PU

R

GR

Y

BLK

BLK

LT. B

LU

BLK

PU

R

TAN

PU

R

BLK

RED/PUR

ORN

PUR PU

R

GR

Y

BLK

BLK

PU

R

LT. B

LU

BLK

PU

R

TAN

OR

N

RE

D/P

UR

PU

R

BLK NOTE 2

NOTE 3

NOTE 1

YEL/RED

YE

L/R

ED

NOTE 3

NOTE 3BRN/WHTNOTE 1 YEL/RED

YEL/RED

SEND SEND SEND

LT

LT

LT

LT

SW

12V12V 12V 12V

GND

UNSW

SIG

GND GND GND

BS

I

SEND SEND SEND

LT

LT

LT

LT

SW

12V12V 12V 12V

GND

UNSW

SIG

GND GND GND

3 4 51 2

1 2 3 4 5

7

6

A

B

NOTE 1: BROWN/WHITE wire is taped back at instrument end. If installing on boat that is equipped with MerCruis-er stern drive, BROWN/WHITE wire is connected to trim sender terminal block. If installing on MerCruiser Inboard,BROWN/WHITE wire is taped back at engine end, or it may be used for an accessory (limit 5 amperes)NOTE 2 : An accessory fuse panel may be connected at this location. The combined current draw of the primarystation and secondary station MUST NOT exceed 35 amperes.NOTE 3 : Connect wires together with screw and hex nut. Apply Quicksilver Liquid Neoprene to connection andslide rubber sleeve over connection.A - Secondary Station1 - Stop -Start Panel2 - Tachometer3 - Oil Pressure4 - Water Temperature5 - Battery Meter


MPI Wiring Diagram (1 of 4)

MPI Wiring Diagram

INJECTORS 2, 3, 5, 8

INJECTORS 1, 4, 6, 7

467 DK BLU

15A

15A87a 30 85 86 87

IDLE AIRCONTROL(IAC) VALVE

C

B

A

DUAL ENGINE DATA LINK(MULTIPLE ENGINEAPPLICATION SOME MODELS)

BLK

916 YEL J1-5 MASTER/SLAVE

461 ORN/BLK

TO ECM/BATFUSE15A

440 ORN

441 BLU/WHT

442 BLU/BLK

443 GRN/WHT444 GRN/BLK

10A

MALFUNCTION INDICATOR LAMP

DK GRN

DLC

R

BLK

PORT FUEL JUMPER ISCONNECTED ONLY IN MPI

APPLICATIONS

SOME MODELSWILL HAVE THEDUAL ENGINEDATA LINKMOVED TO THEDLC

916 YELBLK



(TP)

ENGINE COOLANTTEMPERATURE(ECT)

ENGINE COOLANTTEMPERATURE(ECT) SENSORSIGNAL

INTAKE AIRTEMPERATURE(IAT)

INTAKE AIR TEMPERATURE(IAT) SENSOR SIGNAL (THISSENSOR IS NOT ON 5.7L /350 CID ENGINES)

A

B

C



EST MODULE

ELECTRONIC SPARK TIMING (EST)

DIST. REFERENCE “HIGH”

B A

BYPASS

DIST. REFERENCE “LOW”

TO BUZZER

TO IGN

TO AUDIO WARNINGSWITCHES

TO TACH

TAN/BLU

BLU/TAN

PUR

GRY

3 PNK

121 TAN

121 WHT

931 BRN

COOLANT OVERTEMP(TO BUZZER)

LOW OIL PRESSURE/LOWI/O FLUID (TO BUZZER)

J1-6 TO LOW OIL PRESSURE ANDGEAR LUBE SWITCHES ORTRANS. TEMPERATURE

D

C

B

A

IGNITION CONTROL

IC MODULE

86

430 PUR/WHT

E

FROM KNOCK SENSORMODULE (BLACKSCORPION ONLY)

BLUTO KNOCK SEN-

SOR (BLACKSCORPION ONLY)


86 85

87

ECM BAT FUSE/DLC 15A

TO IGN COIL TERM B

TO FUEL PUMP RELAY FUSE 15A

TO INJECTORS

10A

B

A

BLK

LANYARD STOPSWITCH CIRCUIT(OPTIONAL)

SYSTEM/IGNITION RELAY

TO DLC CONNECTOR

KNOCKSENSOR (KS)MODULE

KNOCKSENSOR (KS)

439 PNK/BLK


TO HARNESS CONNECTOR(BLACK SCORPION ONLY)

CONNECTOR NOT PRESENTON SOME MPI MODELS


EFI Wiring Diagram (1 of 4)

EFI Wiring Diagram

467 DK BLU

15A

15A87a 30 85 86 87

IDLE AIRCONTROL(IAC) VALVE

C

B

A

DUAL ENGINE DATA LINK(MULTIPLE ENGINEAPPLICATION SOME MODELS)

BLK

916 YEL J1-5 MASTER/SLAVE

461 ORN/BLK

TO ECM/BATFUSE15A

440 ORN

441 BLU/WHT

442 BLU/BLK

443 GRN/WHT444 GRN/BLK

10A

MALFUNCTION INDICATOR LAMP

DK GRN

DLC

R

BLK

SOME MODELSWILL HAVE THEDUAL ENGINEDATA LINKMOVED TO THEDLC

INJECTOR

INJECTOR

916 YELBLK



(TP)

ENGINE COOLANTTEMPERATURE(ECT)

ENGINE COOLANTTEMPERATURE(ECT) SENSORSIGNAL

A

B

C



EST MODULE

ELECTRONIC SPARK TIMING (EST)

DIST. REFERENCE “HIGH”

B A

BYPASS

DIST. REFERENCE “LOW”

TO BUZZER

TO IGN

TO AUDIO WARNINGSWITCHES

TO TACH

TAN/BLU

BLU/TAN

PUR

GRY

3 PNK

121 TAN

121 WHT

931 BRN

COOLANT OVER-TEMP (TO BUZZER)

LOW OIL PRESSURE/LOWI/O FLUID (TO BUZZER)

J1-6 TO LOW OIL PRESSURE ANDGEAR LUBE SWITCHES ORTRANS. TEMPERATURE

D

C

B

A

IGNITION CONTROL

IC MODULE

86

430 PUR/WHT


86 85

87

ECM BAT FUSE/DLC 15A

TO IGN COIL TERM B

TO FUEL PUMP RELAY FUSE 15A

TO INJECTORS

10A

B

A

BLK

LANYARD STOPSWITCH CIRCUIT(OPTIONAL)

SYSTEM/IGNITION RELAY

TO DLC CONNECTOR

KNOCKSENSOR (KS)MODULE

KNOCKSENSOR (KS)

439 PNK/BLK


CONNECTOR NOT PRESENTON SOME MPI MODELS


THIS PAGE IS INTENTIONALLY BLANK TOALLOW FOR CORRECTIONS OR ADDITIONS

AT A LATER DATE


Documents

Mercruiser Electric