William Sommerwerck wrote:
I'm beginning to think my premature headlight failures are due
to a less than 100% good electrical connection at the bulb...

Halogen lamps are sensitive to reduced voltage, because they have to run at
full temperature for the halogen cycle to work.

For this reason, you should never only slightly dim a halogen lamp. Either
run it at full, or dim it a lot.


I say, that`s rather a generalisation. Many halogen lamps are designed
to be run at any precentage, theatre lighting for example.

Ron(UK)