X88 Trailer Connector X1 (U4G)
 Courtesy of GENERAL MOTORS COMPANY
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Connector Part Information
- Harness Type: Trailer Tow
- OEM Connector: 90450869
- Service Connector: Service by Harness - See Part Catalog
- Description: 13-Way F 3.5 Series, Sealed
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Terminal Part Information
| Terminal Type ID |
Terminated Lead |
Diagnostic Test Probe |
Terminal Removal Tool |
Service Terminal |
Tray Name |
Core Crimp |
Insulation Crimp |
| I |
Not Required |
No Tool Required |
No Tool Required |
Not Required |
Not Required |
Not Required |
Not Required |
| Pin |
Size |
Color |
Circuit |
Function |
Terminal Type ID |
Option |
| 1 |
0.75 |
BU/WH |
5186 |
Left Trailer Turn Signal Lamp Control |
I |
U4G |
| 2 |
0.75 |
YE/WH |
5190 |
Trailer Fog Lamp Control |
I |
U4G |
| 3 |
2.5 |
BK |
1250 |
Ground |
I |
U4G |
| 4 |
0.75 |
YE/GY |
5187 |
Right Trailer Turn Signal Lamp Control |
I |
U4G |
| 5 |
0.75 |
GY |
5185 |
Right Trailer Park Lamp Control |
I |
U4G |
| 6 |
0.75 |
BN/YE |
5188 |
Trailer Brake Lamp Control |
I |
- |
| 7 |
0.75 |
BN/GY |
5184 |
Left Trailer Park Lamp Control |
I |
- |
| 8 |
0.75 |
GN/WH |
5189 |
Trailer Backup Lamp Control |
I |
U4G |
| 9 |
2.5 |
RD/PU |
4640 |
Battery Positive Voltage |
I |
- |
| 10 |
2.5 |
PU/BN |
1141 |
Run Ignition 3 Voltage |
I |
- |
| 11 |
2.5 |
BK |
1250 |
Ground |
I |
U4G |
| 12 |
0.75 |
GN/BU |
5992 |
Trailer Connected Signal |
I |
U4G |
| 13 |
2.5 |
BK |
1250 |
Ground |
I |
U4G |