Rear Wiring Harness for M931A2

[ladoublet]

All lights work for front of truck (turn signals, etc). No brake lights, turn lights on rear. Can anyone help?

 

[Suprman]

Could be a bad light switch or bad connection somewhere. Or a bunch of burned out bulbs. Have you done any troubleshooting yet?

 

[ladoublet]

Yes we have. Found wiring harness schematic and going from there.

 

[Karl kostman]

Get your ohm meter out and start hunting down where the current stops, I would also make sure the bulbs are know and while the bulbs are out ohm out the sockets. If you have the wiring diagram another very goot spot to start is to locate and cleanup all the grounds, its kind of a pain but it sure works to reduce the work in the end!
good luck
Karl