Soltion wise, its much better than no or "imitation" harness. But the quality of it will not be any better than the weakest part. As an example, I took apart a Pilot relay here a while ago, and it was nothing to scream hurray about. If you want it to last as long as the rest of your cars wiring, use OE quality parts.
I just wanted to add I guess this is for herman I was planning to do a s4 projector in an aftermarket housing for a civic and I was wanting to use a foglight harness then hook up the high beam to the stock harness so that if I flash my high beam it wont affect the projectors I know your not saying that foglight harness completely suck so if you buy a good harness and put oem relays in it would that be good or not worth it and just stick with the stock harness and wire it up like on the faq pages?
You definitely want a harness with a relay for your HIDs. There are the light duty ones made for low wattage fog lights, which will work, but the relay quality (I'm thinking Pilot brand & design here) is questionable. There are also heavy duty driving light harnesses made to drive a pair of 150W driving lights; one of these would be more than enough for the purpose, and these usually have the "cube" style (Bosch design) relay, so you could always put a quality relay in the socket at any time.
ekooke Im not sure what yor asking here about the audi's having the relay's or at least for my situation can you explain more ?
as far as splicing into my original harness I didn't want to do that Im just going to have a switch just like foglights does anyone see a problem with that I know it doesnt give it the oem look but I dont mind as long as I get the quality light
My question about Audis having relayed headlights was in regard to Herman & Mike H's dialogue on 5/18 (above). Some cars already have relayed headlights from the factory, Audi among them; an auxiliary wiring harness to power HIDs for this type of factory wiring scheme shouldn't be necessary, since the headlights are already wired properly to receive power directly from the battery via a relay.
Treating HID headlights as if they were auxiliary lights powered from a separate harness is fine; anything that takes the HID startup load off the factory headlight & M/F switches is the whole idea.
Would this harness work for Bi-Xenons, would you have to modify it in any way. My cars original light setup is H4, one bulb for hi/lo. Would the Xenon lights turn off while hitting the high beam switch? BTW I own a civic.