The following figure shows the air conditioning system circuit of Mitsubishi Pickup model year 1991. This circuit shows the electrical connection between each parts and components that formed the air conditioning system of the vehicle. The parts and components are including the fuse block, blower motor switch, resistor, capacitor, air conditioning controller, thermistor, discharge gas, A/C compressor clutch, A/C engine coolant, low pressure switch, engine control module, and many more. For more details, here is the schematic diagram (click to enlarge) :
