I do not have any instruments or console lights in my 88 560SEL. Fuses are all fine. There are no other electrical problems. I did have the wiring plug on the back of the instruments replaced just after buying the car six months ago. The lights did not work before that and still do not. Where should I check next?

My oil and high beam dash lights always glow unless I turn on the high beams. That could be related.

Thanks
David
88 560SEL
67 European Beetle
69 Conv. Beetle
00 Dodge Durango

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David
1988 560SEL, Green, Chrome wheels.
2000 Suburban, 20" wheels, DVD, wood grain dash (wife's car).
67 Beetle euro, Lots of Empi parts.
69 Beetle conv, 1980s cal look.