ELECTRICAL SYSTEMS WIRING DIAGRAMS

(1)

4

D

ELECTRICAL SYSTEMS

(2)

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

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

(3)

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

(4)

Wiring Diagrams

MCM 3.0LX

1

2

3

2

3

4

5

6

3

2

1

3

1

4

C

B

D

A

2

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

(5)

MCM V-6 Alpha Thunderbolt IV

71877

C

B

D

A

1

2

3

1

2

3

1

2

3

1

2

3

4

5

6

7

8

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

C-Audio Warning System

D -Instrumentation System

1 -Oil Pressure Sender 2 -Water Temperature Sender 3 -Trim Sender

(6)

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

1

2

3

1

2

3

4

5

6

1

2

3

1

3

A

B

2

8

7

74813 NOTE

C

D

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

1 -Oil Pressure Sender 2 -Water Temperature Sender

(7)

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

1

2

3

4

5

6

1

2

3

1

3

A

2

8

7

2

74814 NOTE

C

B

D

A

A -Ignition System

1 -Distributor 2 -Ignition Coil

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

D -Instrumentation System

(8)

MCM V-8 Alpha Thunderbolt V With Knock Sensor

74593

1

2

3

1

2

3

4

5

6

1

2

3

1

2

3

4

NOTE

C

B

D

A

A -Ignition System

3 -Shift Cut-Out Switch 4 -Knock Sensor

1 -Alternator 2 -Electric Choke

(9)

MCM V-8 Alpha Thunderbolt V Without Knock Sensor

74593

2

1

2

3

4

5

6

1

2

3

1

2

3

NOTE

C

B

D

A

A -Ignition System

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

(10)

MCM V-8 Bravo Thunderbolt V With Knock Sensor

2

1

2

3

4

5

6

1

2

3

1

2

3

1

73996 NOTE 1

C

B

D

A

A -Ignition System 1 -Distributor 2 -Ignition Coil 3 -Knock Sensor B -Starting System 1 -Alternator 2 -Electric Choke 3 -Ground Bolt

C-Audio Warning System

(11)

MCM V-8 Bravo Thunderbolt V Without Knock Sensor

2

6

1

2

3

1

2

3

1

74592

1

2

3

4

5

NOTE 1

C

B

D

A

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

C-Audio Warning System

(12)

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

2

6

1

2

1

74592

1

2

3

4

5

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 System

1 -Alternator

1 -Water Temperature Switch

2-Transmission Fluid Temperature Switch 3 -Oil Pressure Switch

(13)

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

2

6

1

2

1

74160

1

2

3

4

5

2

3

NOTE 1

3

7

NOTE 2

C

B

D

A

NOTE 3

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

C-Audio Warning System

(14)

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

2

6

1

2

1

74160

1

2

3

4

5

2

3

NOTE 1 NOTE 2

7

C

B

D

A

NOTE 3

A -Ignition System

1 -Alternator

(15)

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

71693

b

c

a

1

2

3

2

1

2

3

4

5

d

C

B

A

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

a - Harness Connector to EFI System Harness b - Positive (+) Power Wire to EFI System Harness c - Auxiliary Tachometer Lead

(16)

MCM 262 Magnum EFI Gen + Alpha and Bravo

74925

b

c

a

1

2

3

2

1

2

3

4

5

d

C

B

A

7

6

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

3 - Starter 4 - Ground Stud 5 - Alternator

6 - Oil Pressure Cut-Off Switch 7 - Fuel Pump

a - Harness Connector to EFI System Harness b - Positive (+) Power Wire to EFI System Harness c - Auxiliary Tachometer Lead

(17)

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

1

2

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 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

1 - Alternator 2 - Ground Stud 3 - Starter 4 - Circuit Breaker 5 - Starter Slave Solenoid 6 - Neutral Safety Switch

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

(18)

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

2

b

c

a

1

3

5

4

6

1

2

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 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

1 - Alternator 2 - Ground Stud 3 - Starter 4 - Circuit Breaker 5 - Starter Slave Solenoid 6 - Neutral Safety Switch 7 - 90 Amp. System Fuse 8 - Knock Sensor

(19)

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 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 - Vapor Separator Tank (VST) 2 - Throttle Body

3 - Distributor 4 - Coil

5 - Knock Sensor (KS) Module 6 - Data Link Connector (DLC)

7 - Manifold Absolute Pressure (MAP) Sensor 8 - Knock Sensor

9 - Idle Air Control (IAC) 10- Throttle Position (TP) Sensor

11- Engine Coolant Temperature Sensor (ECT) 12- Electronic Control Module (ECM)

13- Fuel Pump Relay 14- Ignition/System Relay 15- Fuel Pump Fuse

16- ECM/Ignition Feed/KS Module/Injectors Fuse 17- ECM/DLC/Battery Fuse

18- Harness Connector To Starting/Charging Harness 19- Shift Cutout Switch

20- Lanyard Stop Switch

(20)

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 connector

removed from the wiring harness. The dual engine capability is relocated by routing the YEL wire to the Data Link

Connector (DLC).

7 - Manifold Absolute Pressure (MAP) Sensor

11- Engine Coolant Temperature Sensor (ECT) 12- Electronic Control Module (ECM)

13- Fuel Pump Relay 14- Ignition/System Relay 15- Fuel Pump Fuse

(21)

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 connector

removed from the wiring harness. The dual engine capability is relocated by routing the YEL wire to the Data Link

Connector (DLC).

11- Engine Coolant Temperature Sensor (ECT)

12- Electronic Control Module (ECM) 13- Fuel Pump Relay

14- Ignition/System Relay 15- Fuel Pump Fuse

18- Harness Connector To Starting/Charging Harness 19- Harness Connector To Lanyard Stop Switch (Optional) 20- Harness Connector For Dual Engine Data Link Cable 21- Positive (+) Power Wire To Engine Circuit Breaker

(22)

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 stop

connector removed from the wiring harness. The dual engine capability is relocated by routing the YEL wire to the

Data Link Connector (DLC).

14- Ignition/System Relay 15- Fuel Pump Fuse

(23)

MCM 350 MPI Bravo (Including Gen + Engines)

74182

1

2

3

4

5

6

7

8

9

10

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 connecconnec-tor removed from the wiring harness. The dual engine capability is relocated

by routing the YEL wire to the Data Link Connector (DLC).

5 - Electronic Spark Control (KS) Module 6 - Data Link Connector (DLC)

11- Engine Coolant Temperature (ECT) Sensor

14- Ignition/System Relay 15- Fuse (15 Amp) Fuel Pump 16- Fuse (15 Amp) ECM/DLC/Battery

17- Fuse (10 Amp) ECM/Injector/Ignition/Knock Module 18- -Harness Connector To Starting/Charging Harness 19- Harness Connector To Lanyard Stop Switch (Optional) 20- Harness Connector For Dual Engine Data Link Cable 21- Positive (+) Power Wire To Engine Circuit Breaker

(24)

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 Data

Link Connector (DLC).

1 - Fuel Pump 2 - Distributor 3 - Coil

6 - Manifold Absolute Pressure (MAP) Sensor 7 - Idle Air Control (IAC)

8 - Throttle Position (TP) Sensor

12- Ignition/System Relay 13- Fuse (15 Amp) Fuel Pump 14- Fuse (15 Amp) ECM/DLC/Battery

15- Fuse (10 Amp) ECM/Injector/Ignition/Knock Module 16- Harness Connector To Starting/Charging Harness 17- Harness Connector To Lanyard Stop Switch (Optional)

(25)

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

Inboard

75001

2

3

4

5

6

7

8

9

10

11

1

12

13

14

15

16

17

18

19

NOTE 1

Link Connector (DLC).

1 - Fuel Pump 2 - Throttle Body 3 - Distributor 4 - Coil

11- Engine Coolant Temperature (ECT) Sensor 12- Electronic Control Module (ECM)

13- Fuel Pump Relay 14- Ignition/System Relay 15- Fuse (15 Amp) Fuel Pump 16- Fuse (15 Amp) ECM/DLC/Battery

17- Fuse (10 Amp) ECM/Injector/Ignition/Knock Module 18- -Harness Connector To Starting/Charging Harness 19- Positive (+) Power Wire To Engine Circuit Breaker

(26)

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

71692

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

NOTE 1

Link Connector (DLC).

7 - Manifold Absolute Pressure (MAP) Sensor 8 - Intake Air Temperature (IAT) Sensor 9 - Knock Sensor

10- Idle Air Control (IAC)

12- Engine Coolant Temperature (ECT) Sensor 13- Electronic Control Module (ECM)

14- Fuel Pump Relay 15- Ignition Relay

16- Fuel Pump Fuse (15 Amp)

17- Injector Fuse (15 Amp) ECM, DLC, Battery

18- ECM Fuse (10 Amp) ECM/Ignition/Injector/Knock Sensor Module

19- Harness Connector to Starting/Charging Harness 20- Harness Connector to Lanyard Stop Switch (Optional)

(27)

MCM Quicksilver Instrumentation

T o Engine Harness NOTE 1 NOTE 1 NOTE 1 NOTE 2 74046

2

5

6

7

8

9

1

3

4

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 - Tachometer

2 - Audio Warning Buzzer (if Equipped) 3 - Oil Pressure

4 - Water Temperature 5 - Battery Meter 6 - Ignition Switch 7 - Trim Indicator

8 - To 12 Volt Source (PURPLE wire connection) 9 - 20 Ampere Fuse

(28)

MIE Quicksilver Instrumentation

74274 B S 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 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 - Tachometer

2 - Audio Warning Buzzer (if Equipped) 3 - Oil Pressure

(29)

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

72940 BRN/WHT PUR GRY BLK YEL/RED NOTE 3 PUR PUR GR Y BLK BLK _LT. BLU BLK PUR TA N PUR BLK RED/PUR ORN PUR PUR GR Y _BLK _BLK _PUR L T . BLU BLK PUR TA N ORN RED/PUR PUR BLK NOTE 2 NOTE 3 NOTE 1 YEL/RED YEL/RED NOTE 3 NOTE 3 BRN/WHT NOTE 1 YEL/RED YEL/RED YEL/RED B S_I

SEND SEND SEND L T L T LT L T SW 12V 12V 12V 12V GND UNSW SIG GND GND GND

SEND SEND SEND L T L T L T L_T SW 12V 12V 12V 12V GND UNSW SIG GND GND GND

3

4

5

1

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 stMerCruis-ern drive, BROWN/WHITE wire is connected to trim sendMerCruis-er tMerCruis-erminal block. If installing on MMerCruis-erCruisMerCruis-er 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

A - Secondary Station

1 - Stop -Start Panel 2 - Tachometer 3 - Oil Pressure 4 - Water Temperature 5 - Battery Meter B - Primary Station 1 - Ignition Switch 2 - Tachometer 3 - Oil Pressure 4 - Water Temperature 5 - Battery Meter 6 - To Engine

(30)

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

72941 BRN/WHT PUR GRY BLK YEL/RED NOTE 3 PUR PUR GR Y BLK BLK _LT. BLU BLK PUR TA N PUR BLK RED/PUR ORN PUR PUR GR Y BLK BLK PUR L T . BLU BLK PUR TA N ORN RED/PUR PUR BLK NOTE 2 NOTE 3 NOTE 1 YEL/RED YEL/RED NOTE 3 NOTE 1 BRN/WHT YEL/RED YEL/RED YEL/RED NOTE 3 NOTE 3 YEL/RED

SEND SEND SEND L T L T L T L T SW 12V 12V 12V 12V GND UNSW SIG GND GND GND B SI

SEND SEND SEND L T L T L T L_T SW 12V 12V 12V 12V GND UNSW SIG GND GND GND

3

4

5

1

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

NOTE 3 : Connect wires together with screw and hex nut. Apply Quicksilver Liquid Neoprene to connection and

(31)

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

72942 BRN/WHT PUR GRY BLK YEL/RED NOTE 3 PUR PUR GR Y BLK BLK _LT. BLU BLK PUR TA N PUR BLK RED/PUR ORN PUR _PUR _GR Y BLK BLK _PUR L T . BLU BLK PUR TA N ORN RED/PUR PUR BLK NOTE 2 NOTE 3 NOTE 1 YEL/RED YEL/RED NOTE 3 NOTE 3 BRN/WHT NOTE 1 _YEL/RED YEL/RED

SEND SEND SEND L T L T L T L T SW 12V 12V 12V 12V GND UNSW SIG GND GND GND B S I

SEND SEND SEND L T L T L T LT SW 12V 12V 12V 12V GND UNSW SIG GND GND GND

3

4

5

1

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

NOTE 3 : Connect wires together with screw and hex nut. Apply Quicksilver Liquid Neoprene to connection and

A - Secondary Station

1 - Stop -Start Panel 2 - Tachometer 3 - Oil Pressure 4 - Water Temperature 5 - Battery Meter B - Primary Station 1 - Ignition Switch 2 - Tachometer 3 - Oil Pressure 4 - Water Temperature 5 - Battery Meter 6 - To Engine 7 - 20 Ampere Fuse

(32)

MPI Wiring Diagram

INJECTORS 2, 3, 5, 8 INJECTORS 1, 4, 6, 7 467 DK BLU 15A 15A 87a 30 85 86 87 IDLE AIR CONTROL (IAC) VALVE C B A DUAL ENGINE DATA LINK

(MULTIPLE ENGINE

APPLICATION SOME MODELS)

BLK 916 YEL J1-5 MASTER/SLAVE 461 ORN/BLK TO ECM/BAT FUSE 15A 440 ORN 441 BLU/WHT 442 BLU/BLK 443 GRN/WHT 444 GRN/BLK 10A

MALFUNCTION INDICATOR LAMP DK GRN

DLC

R

BLK PORT FUEL JUMPER IS

CONNECTED ONLY IN MPI APPLICATIONS

SOME MODELS WILL HAVE THE DUAL ENGINE DATA LINK MOVED TO THE DLC 916 YEL BLK

(33)

(TP)

ENGINE COOLANT TEMPERATURE

(ECT) ENGINE COOLANT_TEMPERATURE (ECT) SENSOR SIGNAL INTAKE AIR

TEMPERATURE (IAT)

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

A B C

(34)

EST MODULE

ELECTRONIC SPARK TIMING (EST)

DIST. REFERENCE “HIGH” B A

BYPASS

DIST. REFERENCE “LOW”

TO BUZZER TO IGN TO AUDIO WARNING SWITCHES TO TACH TAN/BLU BLU/TAN PUR GRY 3 PNK 121 TAN 121 WHT COOLANT OVERTEMP (TO BUZZER) D C B A IGNITION CONTROL IC MODULE 86 430 PUR/WHT E

FROM KNOCK SENSOR MODULE (BLACK SCORPION ONLY) BLU TO KNOCK SEN-SOR (BLACK SCORPION ONLY)

(35)

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 STOP SWITCH CIRCUIT (OPTIONAL) SYSTEM/IGNITION RELAY TO DLC CONNECTOR KNOCK SENSOR (KS) MODULE KNOCK SENSOR (KS) 439 PNK/BLK

MPI Wiring Diagram (4 of 4)

TO HARNESS CONNECTOR (BLACK SCORPION ONLY)

CONNECTOR NOT PRESENT ON SOME MPI MODELS

(36)

EFI Wiring Diagram

467 DK BLU 15A 15A 87a 30 85 86 87 IDLE AIR CONTROL (IAC) VALVE C B A DUAL ENGINE DATA LINK

(MULTIPLE ENGINE

APPLICATION SOME MODELS)

BLK 916 YEL J1-5 MASTER/SLAVE 461 ORN/BLK TO ECM/BAT FUSE 15A 440 ORN 441 BLU/WHT 442 BLU/BLK 443 GRN/WHT 444 GRN/BLK 10A

MALFUNCTION INDICATOR LAMP DK GRN

DLC

R

BLK

SOME MODELS WILL HAVE THE DUAL ENGINE DATA LINK MOVED TO THE DLC INJECTOR INJECTOR 916 YEL BLK

(37)

(TP)

ENGINE COOLANT TEMPERATURE

(ECT) ENGINE COOLANT_TEMPERATURE (ECT) SENSOR SIGNAL

A B C

(38)

EST MODULE

ELECTRONIC SPARK TIMING (EST)

DIST. REFERENCE “HIGH” B A

BYPASS

DIST. REFERENCE “LOW”

TO BUZZER TO IGN TO AUDIO WARNING SWITCHES TO TACH TAN/BLU BLU/TAN PUR GRY 3 PNK 121 TAN 121 WHT COOLANT OVER-TEMP (TO BUZZER) D C B A IGNITION CONTROL IC MODULE 86 430 PUR/WHT

(39)

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 STOP SWITCH CIRCUIT (OPTIONAL) SYSTEM/IGNITION RELAY TO DLC CONNECTOR KNOCK SENSOR (KS) MODULE KNOCK SENSOR (KS) 439 PNK/BLK

EFI Wiring Diagram (4 of 4)

CONNECTOR NOT PRESENT ON SOME MPI MODELS

(40)

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ALLOW FOR CORRECTIONS OR ADDITIONS