Control System Inputs - Manual Climate Control

Climate Control Assembly 

The climate control assembly has 3 system controls:

• The function selector switch combines a vacuum selector valve with 2 electrical switches to supply battery voltage (B+) to the A/C clutch circuit and the blower motor control circuit.
• Temperature selection is accomplished with a potentiometer connected to the temperature blend door actuator. Movement of the control knob from COOL (blue) to WARM (red) causes a corresponding movement on the temperature blend door and determines the temperature that the system will maintain.
• The blower motor switch controls blower motor speed by adding or bypassing resistors in the blower motor resistor.