Mercruiser Electric

September 30, 2017 | Author: darvinasset | Category: N/A
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Description

ELECTRICAL SYSTEMS

4 WIRING DIAGRAMS

INDEX

D

Table of Contents Page 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 With Knock 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

4D - WIRING DIAGRAMS 4D-0 - WIRING DIAGRAMS

INDEX

Page All 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

90-806535960 396

Wiring Colors for MerCruiser NOTE: 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 Start Switch

90-806535960 396

INDEX

WIRING DIAGRAMS - 4D-1

Wiring Diagrams MCM 3.0LX

A 2 1

1 2

C

3

3 4

D 2 1

3

1 6 5 4 2 3

B

NOTE : GRAY lead for use with service tachometer. A -Ignition System 1 -Distributor 2 -Shift Cutout Switch 3 -Filter 4 -Ignition Coil

C-Audio Warning System 1 -Water Temperature 2 -Drive Unit Oil Level (If Equipped) 3 -Oil Pressure Switch D -Instrumentation System 1 -Oil Pressure Sender 2 -Water Temperature Sender 3 -Trim Sender

B -Starting System 1 -Alternator 2 -Electric Choke 3 -Ground Bolt 4 -Starter 5 -Circuit Breaker 6 -Starter Slave Solenoid

4D-2 - WIRING DIAGRAMS

INDEX

90-806535960 396

MCM V-6 Alpha Thunderbolt IV

C 2

1

A

3

2

1

D

3

3

2 1

B 6

1

5 4

3 2

8

7 71877

C-Audio Warning System 1 -Water Temperature 2 -Drive Unit Oil Level (If Equipped) 3 -Oil Pressure Switch D -Instrumentation System 1 -Oil Pressure Sender 2 -Water Temperature Sender 3 -Trim Sender

A -Ignition System 1 -Distributor 2 -Shift Cutout Switch 3 -Ignition Coil B -Starting System 1 -Alternator 2 -Electric Choke 3 -Ground Bolt 4 -Starter 5 -Circuit Breaker 6 -Starter Slave Solenoid 7 -Electric Fuel Pump 8 -Oil Pressure Cut-Off Switch

90-806535960 396

INDEX

WIRING DIAGRAMS - 4D-3

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

A

C 1

2

3

1 3

D

NOTE

2 2

1

3

6 1

4

5

B

3 2

8

7 74813

NOTE: TAN/BLU wire is not used at distributor. A -Ignition System 1 -Distributor 2 -Shift Cutout Switch 3 -Ignition Coil B -Starting System 1 -Alternator 2 -Electric Choke 3 -Ground Bolt 4 -Starter 5 -Circuit Breaker 6 -Starter Slave Solenoid 7 -Electric Fuel Pump 8 -Oil Pressure Cut-Off Switch

4D-4 - WIRING DIAGRAMS

C-Audio Warning System 1 -Water Temperature 2 -Drive Unit Oil Level (If Equipped) 3 -Oil Pressure Switch D -Instrumentation System 1 -Oil Pressure Sender 2 -Water Temperature Sender 3 -Trim Sender

INDEX

90-806535960 396

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

C

A A 1

2

3

1 2

D

NOTE

2 1

3

B 6

1

4

5

3 2 8

7 74814

NOTE: TAN/BLU wire is not used at distributor. A -Ignition System 1 -Distributor 2 -Ignition Coil B -Starting System 1 -Alternator 2 -Electric Choke (2 BBL Only) 3 -Ground Bolt 4 -Starter 5 -Circuit Breaker 6 -Starter Slave Solenoid 7 -Fuel Pump 8 -Oil Pressure Cut-Off Switch

90-806535960 396

C-Audio Warning System 1 -Water Temperature 2 -Drive Unit Oil Level (If Equipped) 3 -Oil Pressure Switch D -Instrumentation System 1 -Oil Pressure Sender 2 -Water Temperature Sender 3 -Trim Sender

INDEX

WIRING DIAGRAMS - 4D-5

MCM V-8 Alpha Thunderbolt V With Knock Sensor C

1

A

2

3

1

2

4

3 1

2

3

NOTE

D

6 1

5 4

2 3

B 74593

NOTE: TAN/BLU wire is not used at distributor. A -Ignition System 1 -Distributor 2 -Ignition Coil 3 -Shift Cut-Out Switch 4 -Knock Sensor B -Starting System 1 -Alternator 2 -Electric Choke 3 -Ground Bolt 4 -Starter 5 -Circuit Breaker 6 -Starter Slave Solenoid

4D-6 - WIRING DIAGRAMS

C-Audio Warning System 1 -Water Temperature 2 -Drive Unit Oil Level (If Equipped) 3 -Oil Pressure Switch D -Instrumentation System 1 -Oil Pressure Sender 2 -Water Temperature Sender 3 -Trim Sender

INDEX

90-806535960 396

MCM V-8 Alpha Thunderbolt V Without Knock Sensor C

A

2 1

3 2

3 3

D NOTE

2 1

6 1 4

2

5

3

B 74593

NOTE: TAN/BLU wire is not used at distributor. A -Ignition System 1 -Distributor 2 -Ignition Coil 3 -Shift Cut-Out Switch B -Starting System 1 -Alternator 2 -Electric Choke 3 -Ground Bolt 4 -Starter 5 -Circuit Breaker 6 -Starter Slave Solenoid

90-806535960 396

C-Audio Warning System 1 -Water Temperature 2 -Drive Unit Oil Level (If Equipped) 3 -Oil Pressure Switch D -Instrumentation System 1 -Oil Pressure Sender 2 -Water Temperature Sender 3 -Trim Sender

INDEX

WIRING DIAGRAMS - 4D-7

MCM V-8 Bravo Thunderbolt V With Knock Sensor C

A

2

1

3

1

2

3

3

D

NOTE 1

2 1

6 1 4

2

5

3

B

73996

NOTE: TAN/BLU wire is not used at distributor. A -Ignition System 1 -Distributor 2 -Ignition Coil 3 -Knock Sensor B -Starting System 1 -Alternator 2 -Electric Choke 3 -Ground Bolt 4 -Starter 5 -Circuit Breaker 6 -Starter Slave Solenoid

4D-8 - WIRING DIAGRAMS

C-Audio Warning System 1 -Water Temperature 2 -Drive Unit Oil Level (If Equipped) 3 -Oil Pressure Switch D -Instrumentation System 1 -Oil Pressure Sender 2 -Water Temperature Sender 3 -Trim Sender

INDEX

90-806535960 396

MCM V-8 Bravo Thunderbolt V Without Knock Sensor

C

A

2

1

1

3

2

3

D

NOTE 1

2 1

6 1 4 2

5

3

B 74592

NOTE: TAN/BLU wire is not used at distributor. A -Ignition System 1 -Distributor 2 -Ignition Coil B -Starting System 1 -Alternator 2 -Electric Choke 3 -Ground Bolt 4 -Starter 5 -Circuit Breaker 6 -Starter Slave Solenoid

90-806535960 396

C-Audio Warning System 1 -Water Temperature 2 -Drive Unit Oil Level (If Equipped) 3 -Oil Pressure Switch D -Instrumentation System 1 -Oil Pressure Sender 2 -Water Temperature Sender 3 -Trim Sender

INDEX

WIRING DIAGRAMS - 4D-9

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

A 1

1

2

2

3

NOTE 3

D

NOTE 2

NOTE 1

2

1

6 1

5 4

2

7

3

B 74592

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 System 1 -Distributor 2 -Ignition Coil B -Starting System 1 -Alternator 2 -Electric Choke 3 -Ground Bolt 4 -Starter 5 -Circuit Breaker 6 -Starter Slave Solenoid 7 -Neutral Safety Switch

4D-10 - WIRING DIAGRAMS

C-Audio Warning System 1 -Water Temperature Switch 2-Transmission Fluid Temperature Switch 3 -Oil Pressure Switch D -Instrumentation System 1 -Oil Pressure Sender 2 -Water Temperature Sender 3 -Trim Sender

INDEX

90-806535960 396

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

A

C

3 1

1

2

2

3

D

NOTE 3

NOTE 2

2

NOTE 1

1

6 1 4

2

5

7

3

B 74160

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 System 1 -Distributor 2 -Ignition Coil 3 -Knock Sensor B -Starting System 1 -Alternator 2 -Electric Choke 3 -Ground Bolt 4 -Starter 5 -Circuit Breaker 6 -Starter Slave Solenoid 7 -Neutral Safety Switch

90-806535960 396

C-Audio Warning System 1 -Water Temperature Switch 2-Transmission Fluid Temperature Switch 3 -Oil Pressure Switch D -Instrumentation System 1 -Oil Pressure Sender 2 -Water Temperature Sender 3 -Trim Sender

INDEX

WIRING DIAGRAMS - 4D-11

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

A 1

1

2 2

3

NOTE 3

D

NOTE 2

NOTE 1

2

1

6

1 4

2

5

7

3

B 74160

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 System 1 -Distributor 2 -Ignition Coil B -Starting System 1 -Alternator 2 -Electric Choke 3 -Ground Bolt 4 -Starter 5 -Circuit Breaker 6 -Starter Slave Solenoid 7 -Neutral Safety Switch

4D-12 - WIRING DIAGRAMS

C-Audio Warning System 1 -Water Temperature Switch 2-Transmission Fluid Temperature Switch 3 -Oil Pressure Switch D -Instrumentation System 1 -Oil Pressure Sender 2 -Water Temperature Sender 3 -Trim Sender

INDEX

90-806535960 396

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

A 1

2

B 2 3

1

1 5

c 2 3 4

a

C

d

b 71693

A– Audio Warning System 1 - Drive Unit Oil Level 2 - Oil Pressure Switch B– Instrumentation System 1 - Trim Sender 2 - Water Temperature Sender 3 - Oil Pressure Sender C - Charging and Starting System 1 - Starter Slave Solenoid 2 - Circuit Breaker 3 - Starter 4 - Ground Stud 5 - Alternator 90-806535960 396

a - Harness Connector to EFI System Harness b - Positive (+) Power Wire to EFI System Harness c - Auxiliary Tachometer Lead d -90 Amp Fuse (DO NOT Remove)

INDEX

WIRING DIAGRAMS - 4D-13

MCM 262 Magnum EFI Gen + Alpha and Bravo A 1

2

B d 2

3

1

1 5

c

3 2 4

a

C

6

7

b 74925

A– Audio Warning System 1 - Drive Unit Oil Level 2 - Oil Pressure Switch B– Instrumentation System 1 - Trim Sender 2 - Water Temperature Sender 3 - Oil Pressure Sender C - Charging and Starting System 1 - Starter Slave Solenoid 2 - Circuit Breaker

4D-14 - WIRING DIAGRAMS

3 4 5 6 7

-

Starter Ground Stud Alternator Oil Pressure Cut-Off Switch Fuel Pump

a - Harness Connector to EFI System Harness b - Positive (+) Power Wire to EFI System Harness c - Auxiliary Tachometer Lead d -90 Amp Fuse (DO NOT Remove)

INDEX

90-806535960 396

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

A 2

1

B

NOTE 1

2

1

c

5 4

1

6 b 3 2

C

d a

NOTE 1: Taped back BROWN and BLACK wire may be used for an accessory. LOAD MUST NOT EXCEED 5 AMPS A - Audio Warning System 1 - Oil Pressure Switch 2 - Transmission Fluid Temperature Switch B - Instrumentation System 1 - Oil Pressure Sender 2 - Water Temperature Sender

90-806535960 396

INDEX

C123456-

Charging and Starting System Alternator Ground Stud Starter Circuit Breaker Starter Slave Solenoid Neutral Safety Switch

a b c d

Positive Power Wire To EFI System Harness Harness Connector To EFI System Harness Auxiliary Tachometer Lead 90 Amp. System Fuse

-

WIRING DIAGRAMS - 4D-15

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

A 2

1

B

NOTE 1

2

1

c

5

1 6

4

8 2

b

3

C

a

74892

7

NOTE 1: Taped back BROWN and BLACK wire may be used for an accessory. LOAD MUST NOT EXCEED 5 AMPS A - Audio Warning System 1 - Oil Pressure Switch 2 - Transmission Fluid Temperature Switch

C12345678-

B - Instrumentation System 1 - Oil Pressure Sender 2 - Water Temperature Sender

Charging and Starting System Alternator Ground Stud Starter Circuit Breaker Starter Slave Solenoid Neutral Safety Switch 90 Amp. System Fuse Knock Sensor

a - Positive Power Wire To EFI System Harness b - Harness Connector To EFI System Harness c - Auxiliary Tachometer Lead

4D-16 - WIRING DIAGRAMS

INDEX

90-806535960 396

MCM 262 Magnum EFI Gen + Alpha NOTE 1

3 19

8 12

4

20 9 10 2

6

1 7 17 11

5 16

14

18

13

15

21 74929

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 stop connector removed from the wiring harness. The dual engine capability is relocated by routing the YEL wire to the Data Link Connector (DLC). 1 2 3 4 5 6 7 8 9 10-

Vapor Separator Tank (VST) Throttle Body Distributor Coil Knock Sensor (KS) Module Data Link Connector (DLC) Manifold Absolute Pressure (MAP) Sensor Knock Sensor Idle Air Control (IAC) Throttle Position (TP) Sensor

90-806535960 396

INDEX

1112131415161718192021-

Engine Coolant Temperature Sensor (ECT) Electronic Control Module (ECM) Fuel Pump Relay Ignition/System Relay Fuel Pump Fuse ECM/Ignition Feed/KS Module/Injectors Fuse ECM/DLC/Battery Fuse Harness Connector To Starting/Charging Harness Shift Cutout Switch Lanyard Stop Switch Positive Power Wire To Engine Circuit Breaker

WIRING DIAGRAMS - 4D-17

MCM 262 Magnum EFI Gen + Bravo NOTE 1

3

8 12

4

9 10 2

6

1 7 16 11

5 17 14

18

13

15

19

74928

NOTE: All BLACK wires with a ground symbol are interconnected within the EFI system harness. NOTE 1: As a mid year (96-1/2) change, the EFI (Throttle Body Injection) models have the lanyard stop connector removed from the wiring harness. The dual engine capability is relocated by routing the YEL wire to the Data Link Connector (DLC). 1 2 3 4 5 6 7 8 9 10-

Vapor Separator Tank (VST) Throttle Body Distributor Coil Knock Sensor (KS) Module Data Link Connector (DLC) Manifold Absolute Pressure (MAP) Sensor Knock Sensor Idle Air Control (IAC) Throttle Position (TP) Sensor

4D-18 - WIRING DIAGRAMS

INDEX

111213141516171819-

Engine Coolant Temperature Sensor (ECT) Electronic Control Module (ECM) Fuel Pump Relay Ignition/System Relay Fuel Pump Fuse ECM/Ignition Feed/KS Module/Injectors Fuse ECM/DLC/Battery Fuse Harness Connector To Starting/Charging Harness Positive (+) Power Lead To Engine Circuit Breaker

90-806535960 396

MCM 5.7L EFI Bravo NOTE 1

3

8 12

4

19 9 10 2

6

1 7 16 11

5 17 14

18

13

20

15

21

73717

NOTE: All BLACK wires with a ground symbol are interconnected within the EFI system harness. NOTE 1: As a mid year (96-1/2) change, the EFI (Throttle Body Injection) models have the lanyard stop connector removed from the wiring harness. The dual engine capability is relocated by routing the YEL wire to the Data Link Connector (DLC). 1 2 3 4 5 6 7 8 9 1011-

Vapor Separator Tank (VST) Throttle Body Distributor Coil Knock Sensor (KS) Module Data Link Connector (DLC) Manifold Absolute Pressure (MAP) Sensor Knock Sensor Idle Air Control (IAC) Throttle Position (TP) Sensor Engine Coolant Temperature Sensor (ECT)

90-806535960 396

INDEX

12131415161718192021-

Electronic Control Module (ECM) Fuel Pump Relay Ignition/System Relay Fuel Pump Fuse ECM/Ignition Feed/KS Module/Injectors Fuse ECM/DLC/Battery Fuse Harness Connector To Starting/Charging Harness Harness Connector To Lanyard Stop Switch (Optional) Harness Connector For Dual Engine Data Link Cable Positive (+) Power Wire To Engine Circuit Breaker

WIRING DIAGRAMS - 4D-19

MCM 5.7L EFI Alpha NOTE 1

3

22

8 12

4

19

9 10 2

6

1 7 16 11

5 17

20

14

18

13

15

21

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 stop connector removed from the wiring harness. The dual engine capability is relocated by routing the YEL wire to the Data Link Connector (DLC). 1 2 3 4 5 6 7 8 9 1011-

Vapor Separator Tank (VST) Throttle Body Distributor Coil Knock Sensor (KS) Module Data Link Connector (DLC) Manifold Absolute Pressure (MAP) Sensor Knock Sensor Idle Air Control (IAC) Throttle Position (TP) Sensor Engine Coolant Temperature Sensor (ECT)

4D-20 - WIRING DIAGRAMS

INDEX

1213141516171819202122-

Electronic Control Module (ECM) Fuel Pump Relay Ignition/System Relay Fuel Pump Fuse ECM/Ignition Feed/KS Module/Injectors Fuse ECM/DLC/Battery Fuse Harness Connector To Starting/Charging Harness Harness Connector To Lanyard Stop Switch (Optional) Harness Connector For Dual Engine Data Link Cable Positive (+) Power Wire To Engine Circuit Breaker Shift Cutout Switch

90-806535960 396

MCM 350 MPI Bravo (Including Gen + Engines) NOTE 1

3 7

4

2 8

9

10

12

19

1 GRY

6

17 11

18

5 14 13

16

20

15

21

74182

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 connector and dual engine data link connector removed from the wiring harness. The dual engine capability is relocated by routing the YEL wire to the Data Link Connector (DLC). 1 2 3 4 5 6 7 8 9 1011-

Vapor Separator Tank (VST) Throttle Body Distributor Coil Electronic Spark Control (KS) Module Data Link Connector (DLC) Manifold Absolute Pressure (MAP) Sensor Knock Sensor Idle Air Control (IAC) Throttle Position (TP) Sensor Engine Coolant Temperature (ECT) Sensor

90-806535960 396

INDEX

12131415161718192021-

Electronic Control Module (ECM) Fuel Pump Relay Ignition/System Relay Fuse (15 Amp) Fuel Pump Fuse (15 Amp) ECM/DLC/Battery Fuse (10 Amp) ECM/Injector/Ignition/Knock Module -Harness Connector To Starting/Charging Harness Harness Connector To Lanyard Stop Switch (Optional) Harness Connector For Dual Engine Data Link Cable Positive (+) Power Wire To Engine Circuit Breaker

WIRING DIAGRAMS - 4D-21

MIE 350 Magnum MPI Gen + Tournament Ski (Black Scorpion) NOTE 1

2 6

3 7 8

10

17

5 1

15 9

16

4

14

12 11

13

18 74893

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 connector removed from the wiring harness. The dual engine capability is relocated by routing the YEL wire to the Data Link Connector (DLC). 1 2 3 4 5 6 7 8 9

-

Fuel Pump Distributor Coil Electronic Spark Control (KS) Module Data Link Connector (DLC) Manifold Absolute Pressure (MAP) Sensor Idle Air Control (IAC) Throttle Position (TP) Sensor Engine Coolant Temperature (ECT) Sensor

4D-22 - WIRING DIAGRAMS

INDEX

101112131415161718-

Electronic Control Module (ECM) Fuel Pump Relay Ignition/System Relay Fuse (15 Amp) Fuel Pump Fuse (15 Amp) ECM/DLC/Battery Fuse (10 Amp) ECM/Injector/Ignition/Knock Module Harness Connector To Starting/Charging Harness Harness Connector To Lanyard Stop Switch (Optional) Positive (+) Power Wire To Engine Circuit Breaker

90-806535960 396

MCM 7.4LX EFI / MIE 350 Magnum EFI Gen + Tournament Ski / 7.4L EFI Bluewater Inboard NOTE 1

3

8 12

4

9 10 2

6

7 16 11

5 17 14

18

13

15

19

1 75001

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 connector removed from the wiring harness. The dual engine capability is relocated by routing the YEL wire to the Data Link Connector (DLC). 1 2 3 4 5 6 7 8 9 10-

Fuel Pump Throttle Body Distributor Coil Electronic Spark Control (KS) Module Data Link Connector (DLC) Manifold Absolute Pressure (MAP) Sensor Knock Sensor Idle Air Control (IAC) Throttle Position (TP) Sensor

90-806535960 396

INDEX

111213141516171819-

Engine Coolant Temperature (ECT) Sensor Electronic Control Module (ECM) Fuel Pump Relay Ignition/System Relay Fuse (15 Amp) Fuel Pump Fuse (15 Amp) ECM/DLC/Battery Fuse (10 Amp) ECM/Injector/Ignition/Knock Module -Harness Connector To Starting/Charging Harness Positive (+) Power Wire To Engine Circuit Breaker

WIRING DIAGRAMS - 4D-23

MCM 7.4LX MPI / 454 / 502 Magnum MPI / MIE 454 / 502 Magnum MPI NOTE 1

1

3 7 8 4

2 9

11

10

20

13

6

18 12

5

17 21

15

19

14

16

22 71692

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 connector removed from the wiring harness. The dual engine capability is relocated by routing the YEL wire to the Data Link Connector (DLC). 1 2 3 4 5 6 7 8 9 1011-

Vapor Separator Tank (VST) Throttle Body Distributor Coil Knock Sensor (KS) Module Data Link Connector (DLC) Manifold Absolute Pressure (MAP) Sensor Intake Air Temperature (IAT) Sensor Knock Sensor Idle Air Control (IAC) Throttle Position (TP) Sensor

4D-24 - WIRING DIAGRAMS

INDEX

1213141516171819202122-

Engine Coolant Temperature (ECT) Sensor Electronic Control Module (ECM) Fuel Pump Relay Ignition Relay Fuel Pump Fuse (15 Amp) Injector Fuse (15 Amp) ECM, DLC, Battery ECM Fuse (10 Amp) ECM/Ignition/Injector/Knock Sensor Module Harness Connector to Starting/Charging Harness Harness Connector to Lanyard Stop Switch (Optional) Harness Connector for Dual Engine Data Link Cable Positive (+) Power Wire to Engine Circuit Breaker

90-806535960 396

MCM Quicksilver Instrumentation 8

1

5

4

3

6

To Engine Harness

2

NOTE 2

9

NOTE 1

7 NOTE 1

NOTE 1

74046

NOTE 1: Connect wires together with screw and hex nut. Apply Quicksilver Liquid Neoprene to connection and slide rubber sleeve over connection. NOTE 2: Power for a second fused accessory panel may be taken from this connection. Load MUST NOT exceed 35-40 amps. Panel ground wire MUST BE connected to instrument terminal that has an 8 gauge BLACK (ground) harness wire connected to it. 1 2 3 4 5 6 7 8 9

-

Tachometer Audio Warning Buzzer (if Equipped) Oil Pressure Water Temperature Battery Meter Ignition Switch Trim Indicator To 12 Volt Source (PURPLE wire connection) 20 Ampere Fuse

90-806535960 396

INDEX

WIRING DIAGRAMS - 4D-25

MIE Quicksilver Instrumentation 7

2

1 4

3

5

6 B S

I

8

74274

NOTE 1: Connect wires together with screw and hex nut. Apply Quicksilver Liquid Neoprene to connection and slide rubber sleeve over connection. NOTE 2: Power for a second fused accessory panel may be taken from this connection. Load MUST NOT exceed 35-40 amps. Panel ground wire MUST BE connected to instrument terminal that has an 8 gauge BLACK (ground) harness wire connected to it. 1 2 3 4 5 6 7 8

-

Tachometer Audio Warning Buzzer (if Equipped) Oil Pressure Water Temperature Battery Meter Ignition Switch To 12 Volt Source (PURPLE wire connection) 20 Ampere Fuse

4D-26 - WIRING DIAGRAMS

INDEX

90-806535960 396

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

A

2

1

3

4

5

GND

L T

SW

UNSW

L T

12V

GND

L T

GND 12V

L T

12V SEND

SEND

GND 12V SEND

SIG

PUR

BLK

PUR

PUR

TAN

BLK

PUR

GRY

YEL/RED

BLK

BLK

BLK

GRY

LT. BLU

PUR

NOTE 3 YEL/RED

2

1

RED/PUR

5

4

BRN/WHT

GND

L T

B SI

3

NOTE 1

SW UNSW L T

12V

GND

SEND

7

GND

L T

12V

GND

L T

12V SEND

12V SEND

SIG

BLK

PUR

RED/PUR

ORN

TAN

PUR

BLK

PUR

LT. BLU

BLK

BLK

PUR

PUR

GRY

YEL/RED

ORN NOTE 2

YEL/RED NOTE 3

NOTE 3 NOTE 3

B

NOTE 1 YEL/RED

BRN/WHT

YEL/RED

6 72940

NOTE 1: BROWN/WHITE wire is taped back at instrument end. If installing on boat that is equipped with MerCruiser 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 primary station and secondary station MUST NOT exceed 35 amperes. NOTE 3 : Connect wires together with screw and hex nut. Apply Quicksilver Liquid Neoprene to connection and slide rubber sleeve over connection. A12345-

Secondary Station Stop -Start Panel Tachometer Oil Pressure Water Temperature Battery Meter

90-806535960 396

B1234567-

INDEX

Primary Station Ignition Switch Tachometer Oil Pressure Water Temperature Battery Meter To Engine 20 Ampere Fuse WIRING DIAGRAMS - 4D-27

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

A

2

1

L T

3

4

5

GND SW UNSW

L T

12V

L T

GND 12V

L T

GND

SEND

GND

12V

12V

SEND

SEND

SIG

YEL/RED

BLK

PUR

PUR

TAN

BLK

BLK

GRY

PUR

YEL/RED

BLK

BLK

PUR

GRY

LT. BLU

PUR

NOTE 3 NOTE 3

YEL/RED

2

1

RED/PUR

I

SW UNSW

L T

12V

7

5

4

BRN/WHT

GND

L T

B S

3

NOTE 1

L T

GND 12V

GND

SEND

GND

L T

12V SEND

12V SEND

SIG

BLK

PUR

RED/PUR

TAN

ORN

PUR

BLK

LT. BLU

PUR

BLK

BLK

GRY

PUR

PUR

YEL/RED

ORN NOTE 2

6

NOTE 3 YEL/RED NOTE 1

B

YEL/RED

NOTE 3

BRN/WHT

YEL/RED

NOTE 3 72941

YEL/RED

NOTE 1: BROWN/WHITE wire is taped back at instrument end. If installing on boat that is equipped with MerCruiser 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 primary station and secondary station MUST NOT exceed 35 amperes. NOTE 3 : Connect wires together with screw and hex nut. Apply Quicksilver Liquid Neoprene to connection and slide rubber sleeve over connection. A12345-

Secondary Station Stop -Start Panel Tachometer Oil Pressure Water Temperature Battery Meter

4D-28 - WIRING DIAGRAMS

B1234567-

INDEX

Primary Station Ignition Switch Tachometer Oil Pressure Water Temperature Battery Meter To Engine 20 Ampere Fuse 90-806535960 396

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

A

2

1

3

4

5

GND

L T

SW UNSW

L T

12V

L T

GND

L T

GND

GND

12V

12V

12V

SEND

SEND

SEND

SIG

BLK

PUR

TAN

PUR

BLK

BLK

GRY

PUR

YEL/RED

BLK

BLK

PUR

GRY

LT. BLU

PUR

NOTE 3

YEL/RED

I

4

5

BRN/WHT

GND

L T

B S

3

2

1

RED/PUR

NOTE 1

SW UNSW

L T

12V

7

L T

GND 12V SEND

GND

GND

L T

12V SEND

12V SEND

SIG

BLK

PUR

RED/PUR

ORN

TAN

PUR

BLK

PUR

LT. BLU

BLK

BLK

GRY

PUR

PUR

YEL/RED

ORN NOTE 2

6

YEL/RED NOTE 3

NOTE 3

NOTE 1

B

BRN/WHT

YEL/RED

NOTE 3

72942

NOTE 1: BROWN/WHITE wire is taped back at instrument end. If installing on boat that is equipped with MerCruiser 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 primary station and secondary station MUST NOT exceed 35 amperes. NOTE 3 : Connect wires together with screw and hex nut. Apply Quicksilver Liquid Neoprene to connection and slide rubber sleeve over connection. A12345-

B1234567-

Secondary Station Stop -Start Panel Tachometer Oil Pressure Water Temperature Battery Meter

90-806535960 396

INDEX

Primary Station Ignition Switch Tachometer Oil Pressure Water Temperature Battery Meter To Engine 20 Ampere Fuse

WIRING DIAGRAMS - 4D-29

MPI Wiring Diagram INJECTORS 2, 3, 5, 8 467 DK BLU

INJECTORS 1, 4, 6, 7

10A 15A

DK GRN

PORT FUEL JUMPER IS CONNECTED ONLY IN MPI APPLICATIONS

R

15A 87a 30 85 86 87

BLK

441 BLU/WHT IDLE AIR CONTROL (IAC) VALVE

442 BLU/BLK 443 GRN/WHT 444 GRN/BLK

DUAL ENGINE DATA LINK (MULTIPLE ENGINE APPLICATION SOME MODELS)

C

BLK 916 YEL

B

J1-5

MASTER/SLAVE

A

SOME MODELS WILL HAVE THE DUAL ENGINE DATA LINK MOVED TO THE DLC

461 ORN/BLK

916 YEL DLC

BLK

TO ECM/BAT FUSE 15A

440 ORN

MALFUNCTION INDICATOR LAMP

MPI Wiring Diagram (1 of 4)

4D-30 - WIRING DIAGRAMS

INDEX

90-806535960 396

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

INTAKE AIR TEMPERATURE (IAT)

B C

(TP)

A

ENGINE COOLANT TEMPERATURE (ECT)

ENGINE COOLANT TEMPERATURE (ECT) SENSOR SIGNAL

MPI Wiring Diagram (2 of 4) 90-806535960 396

INDEX

WIRING DIAGRAMS - 4D-31

IC MODULE EST MODULE

B A

ELECTRONIC SPARK TIMING (EST) IGNITION CONTROL

430 PUR/WHT

DIST. REFERENCE “HIGH” BYPASS DIST. REFERENCE “LOW”

FROM KNOCK SENSOR MODULE (BLACK SCORPION ONLY)

86

TO KNOCK SENSOR (BLACK SCORPION ONLY) TO BUZZER

BLU

E

TAN/BLU

D

TO IGN

PUR

C

TO AUDIO WARNING SWITCHES

BLU/TAN

B

TO TACH

GRY

121 TAN 3 PNK

121 WHT

A

COOLANT OVERTEMP (TO BUZZER) LOW OIL PRESSURE/LOW I/O FLUID (TO BUZZER) 931 BRN

J1-6

TO LOW OIL PRESSURE AND GEAR LUBE SWITCHES OR TRANS. TEMPERATURE

MPI Wiring Diagram (3 of 4) 4D-32 - WIRING DIAGRAMS

INDEX

90-806535960 396

TO IGN COIL TERM B TO FUEL PUMP RELAY FUSE 15A TO INJECTORS

SYSTEM/IGNITION RELAY 85

86

87 ECM BAT FUSE/ DLC 15A

10A

TO DLC CONNECTOR

439 PNK/BLK

KNOCK SENSOR (KS) MODULE

KNOCK SENSOR (KS)

TO HARNESS CONNECTOR (BLACK SCORPION ONLY)

CONNECTOR NOT PRESENT ON SOME MPI MODELS

LANYARD STOP SWITCH CIRCUIT (OPTIONAL)

A B

BLK

MPI Wiring Diagram (4 of 4)

90-806535960 396

INDEX

WIRING DIAGRAMS - 4D-33

EFI Wiring Diagram INJECTOR 467 DK BLU

10A 15A

INJECTOR DK GRN

R

15A 87a 30 85 86 87

BLK

441 BLU/WHT IDLE AIR CONTROL (IAC) VALVE

442 BLU/BLK 443 GRN/WHT 444 GRN/BLK

DUAL ENGINE DATA LINK (MULTIPLE ENGINE APPLICATION SOME MODELS)

C

BLK 916 YEL

B

J1-5

MASTER/SLAVE

A SOME MODELS WILL HAVE THE DUAL ENGINE DATA LINK MOVED TO THE DLC

461 ORN/BLK

916 YEL DLC

BLK

TO ECM/BAT FUSE 15A

440 ORN

MALFUNCTION INDICATOR LAMP

EFI Wiring Diagram (1 of 4)

4D-34 - WIRING DIAGRAMS

INDEX

90-806535960 396

B C

(TP)

A

ENGINE COOLANT TEMPERATURE (ECT)

ENGINE COOLANT TEMPERATURE (ECT) SENSOR SIGNAL

EFI Wiring Diagram (2 of 4) 90-806535960 396

INDEX

WIRING DIAGRAMS - 4D-35

IC MODULE EST MODULE

B A

ELECTRONIC SPARK TIMING (EST) IGNITION CONTROL

430 PUR/WHT

DIST. REFERENCE “HIGH” BYPASS DIST. REFERENCE “LOW”

86

TO BUZZER

TAN/BLU

D

TO IGN

PUR

C

TO AUDIO WARNING SWITCHES

BLU/TAN

B

TO TACH

GRY

121 TAN 3 PNK

121 WHT

A

COOLANT OVERTEMP (TO BUZZER) LOW OIL PRESSURE/LOW I/O FLUID (TO BUZZER) 931 BRN

J1-6

TO LOW OIL PRESSURE AND GEAR LUBE SWITCHES OR TRANS. TEMPERATURE

EFI Wiring Diagram (3 of 4) 4D-36 - WIRING DIAGRAMS

INDEX

90-806535960 396

TO IGN COIL TERM B TO FUEL PUMP RELAY FUSE 15A TO INJECTORS

SYSTEM/IGNITION RELAY 85

86

87 ECM BAT FUSE/ DLC 15A

10A

TO DLC CONNECTOR

439 PNK/BLK

KNOCK SENSOR (KS) MODULE

CONNECTOR NOT PRESENT ON SOME MPI MODELS

KNOCK SENSOR (KS)

LANYARD STOP SWITCH CIRCUIT (OPTIONAL)

A B

BLK

EFI Wiring Diagram (4 of 4)

90-806535960 396

INDEX

WIRING DIAGRAMS - 4D-37

THIS PAGE IS INTENTIONALLY BLANK TO ALLOW FOR CORRECTIONS OR ADDITIONS AT A LATER DATE

4D-38 - WIRING DIAGRAMS

INDEX

90-806535960 396

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