Original question below, but now an answer has been found........

1) 3 days ago, I had an after market stereo put in. The guy used my Crutchfield harness, and I guess hardwired the other wires, and kept the fader working on the Mercedes console panel by the shifter, which I think a lot of people bypass.

So that might be the cause, maybe he messed something up? I didn't check the dash lights, didn't know there was a problem til this morning, and I'm on a 12 hour trip today.

2) Yesterday, I installed new front dash speakers. Maybe that caused the problem?

I checked the fuses, all is well. The light for the temp readout is working. The tail lights, blinkers, etc. which I think are on the same fuse, are all working.

Any suggestions?

jeff 1991 300d 175k