i have a 2003 e500 and i am having a problem with my hid lights. i had headlamps and fog lights installed and for the first few months they all worked fine. Slowly though starting with the fog lamps they started to misfire or not turn on at all. The fog lights no longer turn on at all and the driver side headlamp only fires up every dozen times or so. The only light that has never stopped working is the passenger head lamp.. Does anyone know what could be causing this and how to fix it? Thanks for the help

 

It is probably as simple as a faulty connection or earth.

 

should have just left them original. todays lights are good enough that you shouldnt need HID. now your gonna spend all sorts of money to find someone to fix them. and again and again later.