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Heater-A/C Control

With the ignition switch on, voltage is supplied through the HVAC fuse and circuit 41 (BRN) to the heater-A/C control. The voltage from circuit 1199 (DK BLU) is varied from B+ to approximately 1.5V by the temperature control potentiometer. The heater-A/C control receives ground from G 200 through circuit 1450 (BLK).