Coach Controls Wiring Harness?

I have also been stewing over rewiring my 70 Duster. I like the idea of the relays being there all on the fuse panel but still think they should be close to what ever they are controlling. I`m going to go with the EZ wire 21 harness and then get hold of crackedback for some relay kits that he has. Not sure if relays will be needed for headlights and such after rewire.
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.