mystery head lamp problem--please help!
 

Hi guys.

I'm writing with my 1983 300TD wagon. The driver's side head lamp(low beam) quit working last night. The high beam part still worked, so I figured the low beam bulb burned out and I simply needed to replace the unit. So, I installed the new head lamp today, and the problem remains the same. The high beam works, the low beam doesn't. I checked the fuses and all was well. Both of the fog lamps work as usual. I'm really perplexed by this one, and I'm not sure what direction to take. Any help and thoughts would be appreciated. Thank you.

Damon

First you need to check and see if there is voltage at the headlight plug. If there is not you need to check at the next wire junction point. I had this same problem and when I started sticking the 12v test lamp further and further up the wire 12v finally appeared. The wire inside the plastic covering was literally vaporized and would carry no juice. Buying a test light at the parts store will tell you lots.

Good call, thank you. I'll get the test light out tommorrow and post my results.
Damon