Wiring harness

[Mopar83]

I just purchased an 06 2500. The previous owner butchered the factory harness at three back and spliced in a 7 way, 2 6 ways and a 4 way, none of which work, and neither does the brake controller that he installed. Does anyone have any advice?

 

[Dodgetk81]

I would take it all out and start from scratch

 

[MADDOG]

Trace the harness back towards the front to see if you can't find a weatherpack connector. Then get a new harness to replace it from that point back to the bumper. It may entail the entire harness for all the lights (tail, stop, reverse) plus the 7-pin/4way connectors.

The other option is to start testing each circuit, find a good spot to cut it all out and splice in new wiring back to the plugs.

I hate it when folks do that.