Bump... I know this is an old thread but maybe someone has some insight? Turn signals work, windshild wiper works, rear defroster does not.

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1986 190E 186K (For Sale)
(Maroon, Tan leather)
1996 C280 Sport 208K
(Brilliant Silver, Black Leather)
2002 CLK430 Sport 45K
(Brilliant Silver, Gray Leather , Birdseye Maple)