got a 2004 A4 1.8t Quattro got a left dipping headlight the other day. the light turns on but flickers out after 3 seconds. i installed a HID kit about 3 months ago. the company sent me a set of new bulbs no charge but still got the problem. im thinking its the ballast thats taken a crap on me. any suggestions? I dont wanna be shotgunning parts at it.