- 23
- 0
Hey so i have done a cab swap and i have a 79 cab on a 77 frame. I replaced the Rear harness to be the 79 harness so that made everything easy..But i don't get backup lights when i put it in reverse( its an automatic 4x4 1/2ton) Am i forgetting to plug something in?? I'm thinking there should be something from my tranny i'm forgetting to plug in....anyone have pics of what is the wiring for this? Maybe which plug does this where it goes inside???