Beginners Guide to RV Wiring

Troubleshooting Guide

for the 7 pole RV socket/plug

See the general section first.

Terminal

7 pole RV plug/socket.
Terminal Wire Color Function Location - Truck socket Location Trailer plug
1 White Ground 7:00 o'clock 5:00 o'clock
2 Blue Brakes 5:00 o'clock 7:00 o'clock
3 Green Running 10:00 o'clock 2:00 o'clock
4 Black Power 2:00 o'clock 10:00 o'clock
5 Red LT & Stop 9:00 o'clock 3:00 o'clock
6 Brown RT & Stop 3:00 o'clock 9:00 o'clock
7 Yellow Aux or BU Center Center