I used an EZ wiring kit off ebay, 12 circuit if I remember right. "all" plug in connections have to be changed to mopar. didn`t need relays for the headlights because of the better sized wire, and they work great. so far so good, even looked pretty good under the dash, till I added fuel inj, and started changing my mind on stuff,pretty busy now. but seems to be ok. Sean at EZ is an elec. genius if he`s still there.