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Old 11-17-2018, 03:21 PM   #8
61_FL_Apache
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Join Date: Sep 2010
Location: Royal Palm Beach, FL
Posts: 4,065
Re: AC/Heater control switch issue

The little bit of testing I did was looking for voltage at each of the 3 wires when changing the mode. I only had power one the black wires as I changed modes. I also heard nothing when I removed this one near the gas pedal and went thru the modes.
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1997 Tahoe LT 4D 2WD (DD)
1961 Apache 10 (sold)
1965 C10 Stepper (sold)
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