Wiring Colors For Mercruiser - Mercury MerCruiser MCM 454 Mag MPI Service Manual

WIRING DIAGRAMS

Wiring Colors for MerCruiser

NOTE: Color codes listed below DO NOT apply to fuel injection system harnesses.
BLACK (BLK)
BROWN (BLU)
ORANGE (ORN)
LT. BLUE/WHITE (LT BLU/WHT)
GRAY (GRY)
GREEN/WHITE (GRN/WHT)
TAN (TAN)
LIGHT BLUE (LT BLU)
PINK (PNK)
BROWN/WHITE (BRN/WHT)
PURPLE/WHITE (PUR/WHT)
RED (RED)
RED/PURPLE (RED/PUR)
RED/PURPLE (RED/PUR)
ORANGE (ORN)
PURPLE/YELLOW (PUR/YEL)
PURPLE (PUR)
YELLOW/RED (YEL/RED)
Index
Page 4E-2
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BIA COLOR CODE AND
ABBREVIATIONS
SERVICE MANUAL NUMBER 23
WHERE USED
All Grounds
Reference Electrode - MerCathode
Anode Electrode - MerCathode
Trim - "Up" Switch
Tachometer Signal
Trim - "Down" Switch
Water Temperature Sender to Gauge
Oil Pressure Sender to Gauge
Fuel Gauge Sender to Gauge
Trim Sender to Trim Gauge
Trim - "Trailer" Switch
Unprotected Wires from Battery
Protected (Fused) Wires from Battery
Protected (+12V) to Trim Panel
Alternator Output
Ballast Bypass
Ignition Switch (+12V)
Starter Switch to Starter Solenoid to
Neutral Start Switch
90-861326--1 MARCH 1999