WIRING DIAGRAMS SERVICE MANUAL NUMBER 23
Page 4E-14 90-861326--1 MARCH 1999
MEFI 2 MCM (Sterndrive) 7.4L MPI (L-29) Model
NOTE: All BLACK wires with a ground symbol are interconnected within the EFI system
harness.
75682
16
17
18
19
20
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1-Fuel Pump
2-Distributor
3-Coil
4-Electronic Spark Control Module
5-Data Link Connector (DLC)
6-Manifold Absolute Pressure (MAP) Sensor
7-Knock Sensor (Port and Starboard)
8-Idle Air Control (IAC)
9-Throttle Position (TP) Sensor
10 - Engine Coolant Temperature (ECT) Sensor
11 - Electronic Control Module (ECM)
12 - Fuel Pump Relay
13 - Ignition/System Relay
14 - Fuse (15 Amp) Fuel Pump Fuse (15 Amp)
ECM / DLC / Battery Fuse (10 Amp) ECM /
Injector / Ignition / Knock Module
15 - Harness Connector To Starting/Charging
Harness
16 - Positive (+) Power Wire To Engine Circuit
Breaker
17 - Intake Air Temperature (IAT) Sensor
18 - Gear Lube Bottle - Audio Warning Switch
19 - Oil Pressure - Audio Warning Switch
20 - Water Temperature Sender (Gauge)
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