Hi. I'm trying to sort out the last kink in the fender bender repair of my 1995 E320. This one involves lighting issues. When I turn the headlight switch to parking light position or low beam position, every exterior light activates (low beams, high beams, fog lights). This malfunction is not affected by flicking the multifunction lever or pulling the switch out 1 or 2 notches. To top things off, the lamp defective orange idiot light is illuminated on the dash.

Any ideas where to start? I was going to leave this repair to the body shop, but I think they are also in the dark (no pun intended). A wiring schematic might even be helpful.

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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