Quote:
Originally Posted by arkie
Easy fix on this one fellows - and you don't have to pull anything. The rheostat gets corrosion/patina and no longer conducts electricity through it. Twisting it on-off anywhere from 25 to 500 times (literally - had a 76 that took nearer to the 500) will usually strip the corrosion off and magically restore the instrument lights.
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I did this on my '82 300sd. Probably twisted that thing fifty billiondy times. I now have maybe 75% light out of an already dim setup. It will do until I pull my cluster to fix my recently busted odo and dead clock.
I will probably bypass the rheostat. I don't think I've ever needed to dim any dash lights.
I'll also check the circuit boards for broken traces -- thanks Zerohour.
Bill