So I am working on the drivers side putting in the set. I finally get the bulb seated loosening the plastic peice that holds the bulb in plug everything in and I see the bulb flicker really fast and here what sounded like arcing and then light goes out. I thought I french fried the headlight wires. Found it was a fuse. Replaced the fuse unplugged everything and changed bulbs and got that arcing and flickering again. So I plugged the the bulb that I changed to and plugged it into the other ballast and bingo. Let there be light. I tried the first bulb in the good ballast and nothing. So I emailed the guy with the problem. So we will see what he says. He had great fast shipping and kept in touch very well. Lets see how customer service is. I have one side in and the halogen in on the other side. Looks really wierd.