Bought my first Porsche last December, an '89 911 3.2 Coupe with about 80K on it. I have noticed that the running lights get dimmer or brighter while driving. It seems to be associated more with g-forces and not rpm. During heavy acceleration they might dim momentarily, then brighten. Also happens in turns. Then last night, the brights went out on both sides, but low-beams still work.

What fuse would the brights be on, and what other things should I look at in the electrical system?

 

I don't have my Bentley manual near me but if you have the fuse box cover the inside of it will tell you what fuse goes to what system (a/c, lo beam, hi beam, etc).