Originally Posted by zdawg8394
just wondering about installing hids on a 6.4 if i install a kit on the head lights and fog lights will i need to add and extra harness and relay? or will it plug right into the stock harness and work fine. thanks.
Having done HID's and a projector retrofit, I can answer this for you. If you plan on doing an bi-xenon kit (low and high beams) you will need a harness/relay. Most of the bi-xenon kits come with it. Almost all the HID kits nowadays come plug and play specific for your vehicle.
I'm speaking from experience here when I tell you this. If you plan on buying an eBay HID kit, save your money. Most, if not all, are junk. I got lucky a few years ago and bought a really good kit for my Tahoe that lasted years. But I've bought plenty in between that have all crapped out. Some not even lasting more than a few months. The companies will almost always play games to avoid honoring their warranty so they make it extremely difficult to get replacement parts. I will tell you this, the BEST way to add HID's to your truck is a projector retrofit kit. When you add HID's to the stock headlight assembly, it has a horrible beam pattern and will scatter light everywhere and blind other drivers. The factory headlight housing wasn't designed for HID's. If you want to do it right, spend the extra money and either do a retrofit yourself or pay a company who will do it. I made a thread on here, along with a few others that have made threads, with examples of what it looks like.
Good luck with your choice and if you have any questions I'll try to help out.
Here's my thread Projector Retrofit Project