I have the same problem as a member just below me but can't seem to figure out the issue...I had 8000k xentec hid's with 35 watt ballasts and one of them went out so for the time being i put my stock bulbs back in but then when i replaced the ballast i couldnt get either one of my hid's to work. I figured the bulbs must be the issue so i bought new bulbs and they still wouldnt turn on. ive tried 4 different bulbs and 4 different ballasts to no avail. When i plug the stock harness back into the normal light bulbs they work just fine and i cant figure out the problem. any thoughts?