This same thing was bad on my 79 before and it was then next thing on my to do list before it got wrecked. So 86 300D no dash lights are working with the exception of the ABS light is on and the green indicator for the lights is on, nothing else works. I dont really see a dimmer on the car anywhere are there any common failures switches fuses etc. that i should look into first?

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2003 Dodge Ram 2500 Cummins - Georend fully built trans, Banks Big Hoss Bundle, Smarty Tuner, 5" turbo back exhaust. 500 HP and 1100 ft/lbs to the ground.
1979 Mercedes-Benz 300CD - Lost to a four car pile up on 275, Thank You Michigan Drivers.
1986 Mercedes-Benz 300D - Sold, Euro non-turbo car.