No Backup Lights

[schwarz_06]

Ok, its dark and I kick Martha in Reverse, but no backup lights. . . fuse is good and bulbs are good. Any ideas??

[DKR]

I just had the same problem with my 99 SD at work. The 2 things I found was the fuse was actually loose in the box, tighten that bit still no lights. We had a busted trailer plug (the large 7 pin). Unplug the wiring harness for the trailer plug and our reverse lights worked.

If not that, I would start looking at the shifter switch or relay.

[schwarz_06]

thanks eric ill check out the trailer plug and let you know.

[greenie]

Just were are those located.I don't see any holes or nothing in the bumper.

[DKR]

NP, keep us informed!

[schwarz_06]

problem solved, i had an extension for my 4 pin trailer plug. unplugged it and worked fine. thanks for pointing me in the right direction.

[DKR]

Originally Posted by schwarz_06

problem solved, i had an extension for my 4 pin trailer plug. unplugged it and worked fine. thanks for pointing me in the right direction.

Sure thing, I literally had the same thing just last week! Glad ya got it fixed!!