Hey, I have a 2004 GMC Envoy XUV and just purchased HID 6000ks. Went to install them thinking they were "Plug&Play". Well, turns out the wiring had me scratching my head. I am 100% positive that i have the correct bulbs for the car as well as the ballasts. When I took the headlamps out, I noticed that there was only one hot, "input", wire leading to each of the headlamps. Given that I have two bulbs per headlamp, high and low beams, I am completely puzzled on what to do. Am I missing something?/??? I need some advice from a veteran that is for sure. Any help is appreciated!