The low beam head light on the driver's side of my '99 A4 stopped working the other night. The passenger side head light is fine.

I went out and got a "OEM" replacement (actually 2 just in case one was bad). During the replacement process, I noted that the original bulb did not looked burnt out. Thinking that perhaps there is something special about these light bulbs, I proceeded with the replacement and lo and behold the headlight still does not work.

This certainly smells like an electrical problem to me, but I have no idea where to start since one of the headlights is actually working properly.

Any idea where to start poking around?

 

fuses is the next place i would look

 

Unfortunately, that does not seem to be the cause. Fuses are fine.