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Home >> Cadillac >> 1977 >> Seville >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Automatic Temperature Control >> Control System Components >> In-Car Turn-On Switch

In-Car Turn-On Switch

A thermostatic switch located just forward of the wire retaining clip on the control panel baseplate. Senses in-car temperature and closes to turn the A/C system an if that temperature is above 75°F, even if engine coolant is cold and the other turn-on switch (located in the engine) is cold.