I have an 03 CL-S and all of my headlights work except for the drivers side HID. I switched the relays, fuses, bulbs, I even got an inverter and igniter, installed both of them and the light is still not working. I just dont know what to do. Has anyone encountered a problem like this before. If I dont figure this out soon I will be forced to take my car to the dealer. Please any suggestion will be very much appreciated.

 

Have you checked the ground connections and fuses?

 

I have checked the fuses. How do I check the ground connections?

 

Thats my thought exactly, most likely a bad ground.