The instrument cluster night lights in the '85 300TD stopped working a few months ago. The bottom row of status lights work fine.

I've replaced the bulbs, replaced the rheostat, soldered the leads on the rheostat, and checked the fuses. Still no lights.

Are there any other possible causes?

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JWJ
1983 MB 300D - > 430,000 miles - Deep Blue - Bilstein Comforts - 0-60 in 24 seconds - 27MPG
1985 MB 300TD (wagon) - > 275,000 miles - Manila Beige - Thule rack - 0-60 in 18 seconds - 22 - 25MPG
Biodiesel, Mobil Delvac 1, and Viton fuel lines!