About 2 weeks ago my passenger head light went out. Bought an OEM bulb worked for 4 days & went out again. I returned the bulb thinking it was a bad bulb, the guy I bought it from tested it & the bulb was working fine. Well we switched the bulb, ballast, and even the whole head light to the other side but the problem remained on the passenger side. (It comes on sometimes but turns off after a few minutes). Well we checked the HID relay connection in the fuse box with circuit tester. (Removed relay plug & tested the pin connection in the actual box) 2 power & 1 ground pin sends a steady current signal, but 1 ground is not sending a steady signal, the tester flickers on & off. What would be the next step to take? Should it be an easy fix or should I just take it to the dealer & let them charge me an arm & a leg to have it fixed?