Electrical Wiring Color Code - Cummins
Ref. No. Color
Color Code
Stoplights to Stoplight Switch
1. Tan
Tail Lights to Instrument Panel (Joins Pink)
2. Yellow
Back-Up Lights to Light Switch
3. Dark Blue
4. Brown
Engine Temp. Sender to Engine Temp. Gauge
Ignition Switch to Hourmeter, Ether Injector & Switches
5. Red &White
Engine Oil Press. Sender to Engine Oil Press. Gauge
6. Dark Green
Air Press. Sender to Air Press. Gauge
7. Light Green
Starter Button to Neutral Start Switch to Starter Relay
8 White
Ignition Switch to 50 Amp. Circuit Breaker to Starter Solenoid
9. Red
Converter Temp. Sender to Converter Temp Gauge
10. Grey
Battery to Lighter
11. Orange
Ignition Switch to Starter Button
12. Black
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 to Headlamps
17. Pink
Ignition Switch to Low Pressure Sender
18. Black
Quick Start Button to Ether Injector
19. Brown &White
A
AA
Neutral Start Switch
N
Engine Oil Pressure Gauge
Stop & Tail Lamps
B
BB
Quick Start Button
Dash Lamp
O
Back up Lamps
C
CC
Low Pressure Sender
Lighter
P
DD
Warning Light
D
Starter Button
Engine Oil Pressure Sender
Q
E
EE
Buzzer
R
Stop Light Switch
Engine Temperature Sender
F
FF
Batteries
Horn Switch
Converter Temperature Sender
S
G
GG
Starter Solenoid
Heater Connector
T
Fuel Solenoid
HH
Starter
H
Headlamps
U
Hourmeter
I
II
Air Pressure Sender
V
Converter Temperature Gauge
JJ
Resistor
J
W
Horn
Engine Temperature Gauge
K
KK
50 Amp Circuit Breaker
Light Switch
X
L
LL
Ether Injector
Y
20 Amp Fuse
Ignition Switch
M
MM
15 Amp Fuse
Z
3/4 Amp Fuse
Air Pressure Gauge
E13-2