Circuit Operation

The automatic A/C system consists of the following components:

Blower Controls:
- Blower Motor
- Max Hi Relay
- Power Transistor

Compressor Controls:
- A/C Compressor Clutch
- A/C Compressor Relay
- A/C Pressure Switch
- A/C Thermostat Relay Air Delivery Controls:
- Intake Actuator
- Mix Actuator
- Mode Actuator

Sensor Inputs:
- Evaporator Sensor
- In-Car Temperature sensor
- Outside Temperature Sensor
- Sunlight Sensor
- Thermo Sensor

The Automatic Heater-A/C Control Unit is powered at all times through fuse C-16 and with the engine running through fuse C-20, and is grounded at all times at B-2.