low beam fuse
 

looking for help...my '86 944 keeps blowing the driver's side low beam fuse. 7.5AMP, I believe. Put a new one in, head lamp works for a while, next day or so fuse is out again....not sure what is causing the fuse to keep blowing

passenger side no problems - high beams no problems. just driver's side low beam fuse. could it be a bad headlamp?

Try putting a slightly larger fuse, 10 or 15 amp.
If there is an intermittent short in the wiring, it will blow the fuse.
If it is just the headlight, then the fuse may hold up.

You can get small shorts in the filament coils in a light bulb. If you do replace the headlight replace both, especially if they are old. The lighting will be better.

You could also try swapping the headlight to see if the problem follows the headlight or stays in place.

The wiring that flexes for the pop up headlight is a good place to look for a short.
I can't say that I never put larger fuse in a circuit myself, but it's really a bad idea especially on marginal European wiring.

+1, that was my problem. After hours and hours of troubleshooting, we finally found breaks on both sides behind the headlights. The insulation had worn off with flexing and with rubbing up against the headlight bracket on the back. I agree with Marc, I would avoid putting in a higher amp fuse, they are meant to be fail-safes and if you increase the amperage you never know what might blow before the fuse, instead of the fuse being the first thing to go.

OP Update...I did go from 7.5 up to a 10 and haven't had any problems since albeit driving limited miles. Thanks fellas