Electrical Wiring Color Code - G.M.
Ref. No., Color
Color Code
1. Tan
Stoplights to Stoplight Switch
2. Yellow
Tail Lights to Instrument Panel Plug (Joins Pink)
3. Dark Blue
Back-up Lights to Light Switch
Engine Temp. Sender to Engine Temp. Gauge
4.
Brown
5.
Red &White
Ignition Switch to Hourmeter Relay, Hourmeter, Ether Injector & Switches
6.
Dark Green
Engine Oil Press. Sender to Engine Oil Press. Gauge
7.
Light Green
Air Press. Sender to Air Press. Gauge
a. White
Starter Button to Neutral Start Switch to Starter Relay
9.
Red
Ignition Switch to Circuit Breaker to Starter Solenoid
10. Grey
Converter Temp. Sender to Converter Temp. Gauge
11.
Orange
Battery to Lighter
12.
Black
Ignition Switch to Starter Button
Ignition Switch to Voltmeter
13.
Purple &White
Ignition Switch to Resistor to Fuse to Gauges
14.
Purple
Ignition Switch to Fuse to Light Switch
15.
Violet
Horn Switch to Horn
16.
Light Blue
Light Switch
Pink
17.
F-2 Alternator Terminal to Voltage Regulator, Quick Start Button to Ether Injector
18.
Brown & White
Lt. Blue &White
F-l Alternator Terminal to Voltage Regulator
19.
Battery Alternator Terminal Splice to Red
20.
Red & Black
Ignition Switch to Brake Low Press. Sender
21.
Black
Quick Start Button
BB
Dash Lamp
A
Stop & Tail Lamps
O
Low Pressure Sender
CC
Lighter
P
B
Back-up Lamps
Warning Light
DD
Starter Button
Alternator
Q
C
EE
Buzzer
R
Stop Light Switch
Engine Oil Pressure Sender
D
Batteries
FF
S
Horn Switch
E
Engine Temperature Sender
Starter Solenoid
GG
T
Heater Connector
F
Converter Temperature Sender
HH
Starter
U
Head Lamps
Hourmeter Relay
G
II
Starter Relay
V
Air Pressure Sender
H
Hourmeter
Resistor
JJ
W
Horn
Converter Temperature Gauge
I
KK
X
Light Switch
Engine Temperature Gauge
J
Voltage Regulator
LL
20 Amp Fuse
Y
K
Ether Injector
MM
Z
3/4 Amp Fuse
Ignition Switch
L
15 Amp Fuse
NN
AA
Neutral Start Switch
M
Air Pressure Gauge
N
Engine Oil Pressure Gauge
E15-2