gdubya Posted April 27, 2020 Share Posted April 27, 2020 My rear defog only works in the Hi position. I tested for voltage at the motor and I get 12v in the Hi position and 0 in the Lo. Pulled the switch out and noticed there are only 2 pins on the back so I thought perhaps one had broken off at some point. When I searched eBay for a replacement it appears they all have just 2 pins. Is that correct? Before I buy a new switch, does anyone know how I can test the switch to be sure? When I test across the power pin to the Hi pin I get resistance. When I test across the power pin to where the Lo pin should be I get resistance that is different than across the Hi pin. Make sense and leads me to believe the switch is working but I get 0v at the motor in Lo. Maybe the internal power circuit on the switch is broken? Any help would be appreciated. GW Quote Link to comment Share on other sites More sharing options...
1970mcss Posted April 27, 2020 Share Posted April 27, 2020 I think there should be a rear defogger relay, did you check it out? Quote Link to comment Share on other sites More sharing options...
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