Hello, I recently purchased a set of dmmtuning.com's 35W and 55W HID kits for my Silverado. I have custom headlights that use the h1 bulb and not the stock bulb. On the diagram it shows all the parts I have and how to plug it in, real easy, but it also shows a wire that plugs onto the battery and I don’t have that wire. My question is: Do I Need it? Thanks for any information you guys got!