Someone else mentioned a possible fault in wiring of the headlight wipers. He stated the wiper connected to the headlamp assembly could cause this condition. Any thoughts?

I will also try the ground.

Awesome 124s in your signature by the way!!

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1982 300D-T (sold)
1988 300E (sold)
1994 E320 Wagon (sold)
1995 E320
1998 E300D-T
1999 E3204M Wagon
2001 E320
2005 E320 CDI