I used an EZ wiring harness. I think it was the 12 circuit "mini" kit. Its a mostly generic kit, but probably more GM friendly. I had to go source the Molex pins for the steering column connection and a few other spade connectors ( I want to say Packard 56 or something similar) for a few other connectors. All in all, it was a fairly simple install. The EZ wiring kit came with a "Mopar" wiring diagram, which was actually quite useful. I also referenced Haynes manual for its schematics. I did repurpose a few circuits, I guess that's a luxury with a generic kit.