When I turn on the headlights with the rear defroster or the headlights with the front defroster I get a squealing sound from the engine. When I turn the defroster off the sound stops. I also get a 1 second squeal when I start the car. Squeal is present while not moving with foot on pedal. Can I make an adjustment or do I need to replace a part? How long have I got until it fails? Which part? (Belt, Alternator, other?).

Fareed M.
1978 300D

[Edited by Trius91 on 12-19-2000 at 10:02 PM]