Apr 29

Passenger side after market HID stoped working

I have an aftermarket HID kit installed in my 2008 f150. It's about 3 years old and has worked fine. However recently the passenger side has gone out. I thought it must be the bulb so got a new one. While I was at the shop I got my ballest checked to see if it was ok and it worked fine.

Now even with a new bulb it still isn't working on passenger side. What is the next thing for me to check/replace ? The ballast works fine and the drivers side is still ok. I checked the ground and all connections seem to be secure.