[stealthsrt8]

i am assuming you have an aftermarket kit? if so, i'd do some more troubleshooting.

1. switch the passenger side and the driver side bulbs. see if the the problem moves with the bulb.

2. if the problem does not move, switch the bulbs back, and now switch the ballasts.

once you isolate the problem, then order the parts you need. if it is the bulb, i always recommend you buy a pair of bulbs and change them at the same time to get a uniform color. keep the "good" bulb as a spare.