I hope I posted this in the correct place. I recently had HID lights installed and one of the bulbs went out already. I noticed that the white plastic retainer clip was missing from the passenger side. I know it was there before and it was definitely nice and snug when I installed the lights the first time around. My question is where can I find a replacement part? I tried all the auto stores first and no luck. I went to three dealerships and they said they did not have the part and I would have to order a whole new light! That doesn't sound right to me. I tried looking online but I have no clue what the part number is. Any help would be very much appreciated! Thanks!