I have H3 bulbs in my driving lights on my 90 Coupe Quattro and the driver side bulb keeps burning out. In the last 3 weeks, I have replaced the bulb 3 times. I was very carefull about not touching the bulb. This light worked fine for a year before this started happening. The bad bulb is blue and black on the inside of the glasss. Does this mean anything? Please help. TIA Tim 90CQ, 77Spitfire