7-314
Electrical Component and Inline Harness Connector End Views
X125 Engine Chassis Harness to Chassis Harness (cont'd)
Pin
Size
Color
Circuit
Terminal
Type ID
Option
Function
Pin
Size
Color
Circuit
Terminal
Type ID
Option
6
—
—
—
—
—
Not
Occupied
6
—
—
—
—
—
7
0.5
BK/
L-GN
3657
II
—
Exhaust Gas
Temperature
Sensor 3
Low
Reference
7
0.5
BK/
GN
3657
III
—
8
0.5
D-
BU/
WH
7446
II
—
Fuel
Pressure
Sensor
Signal
8
0.5
BU
7446
III
—
9
0.5
BK/
YE
7447
II
—
Fuel
Pressure
Sensor Low
Reference
9
0.5
BK/
YE
7447
III
—
10
1.5
VT/
L-GN
355
I
—
Fuel Filter
Heater
Voltage
10
2
VT/
GN
355
IV
—
11
0.5
GY/
L-GN
5378
II
—
Exhaust Gas
Temperature
Sensor 3
Signal
11
0.5
GY/
GN
5378
III
—
12
0.5
YE/
D-BU
1465
II
—
Secondary
Fuel Pump
Relay
Control
12
0.75
BU
10131
III
—
13
-
14
—
—
—
—
—
Not
Occupied
13
- 14
—
—
—
—
—
15
0.5
WH/
RD
6054
II
—
Exhaust
Pressure
Sensor 1 5V
Reference
15
0.5
WH/
RD
6054
III
—
16
0.5
BK/
YE
6055
II
—
Exhaust
Pressure
Sensor 1
Low
Reference
16
0.5
BK/
YE
6055
III
—
17
0.5
D-BU
6053
II
—
Exhaust
Pressure
Sensor 1
Signal
17
0.5
BU
6053
III
—
18
0.5
BN/
RD
7445
II
—
Fuel
Pressure
Sensor 5V
Reference
18
0.5
BN/
RD
7445
III
—
19
1.5
VT/
D-BU
3674
I
—
NOx Sensor
1 Control
19
1.5
VT/
BU
3674
IV
—
20
—
—
—
—
—
Not
Occupied
20
—
—
—
—
—
2021 - Silverado 4500HD, 5500HD, and 6500HD Electrical Body Builder Manual