I have been looking for the thread that talked aobut installing a P3 and using a factory Dodge wiring harness for non-tow package 2008 Ram 1500.
I ran across the thread a couple of days ago and now I can find it, but someone explained how the Prodigy plugged into the blue connector in the cab and wires were run to the battery and back to the lights or something like that. The factory wiring harness just gives diagrams without any words........................

Thanks
John