Hi guys ! i have a 03 g35 sedan and when i turn on my stock HID headlights, the left one is green at first, but then after a few seconds turns into a purple color, and then all of a sudden shuts off. what does this mean? could it be loose? or do i have to replace it? if its loose how do i tighten it and if it needs to be replaced wheres the cheapest place i can get it at? the right side is perfectly fine though. any help is apprecaited thanks

 

is it under warranty? take it to the dealer