headlight problem
 

I can be driving down the road at night and my headlights will sometimes burn brighter for a minute or two and then burn dim for a while. Doesn't matter if I rev up the engine or not? I recently blew a fan belt and replaced it. Could it be that I don't have it tight enough or do you think maybe a short? 72 911T with 3.2

not familiar w/ your year,..but is the regulator OK?

best,

Doyle

Likely voltage regulator going. Check the alternator output at the battery while car is running. It should be around 13.8V or so. Not much higher.

Mine stuck and overcharged the system...ended up burning out my headlight bulbs!

Cooper

thanks it is going to the shop for another problem Thursday. I will have them check the voltage regulator and the altenator output. you guys are great, thanks

Check ALL of your ground straps.