When you say dimmer switch for the high beam, are you talking about the low/high beam switch found on the steering column? How do I test it? I'd hate to replace it, and then find out that it isn't the problem (although I strongly suspect that it is).

Does Mercedes use fusible links?

Thank's for your response. I'll start by checking the wires.

[This message has been edited by Larry (edited 08-21-1999).]