Auxiliary Heater Installation (G Models) For 1979 GMC Light Duty Truck (Series 10-35) Wiring Diagram

This schematic right here is the auxiliary installation diagram (G Models) for the 1979 GMC Light Duty truck (Series 10-35). This schematic is specially made for the G Models trucks. Inside you will see parts like: existing heater, control switch, auxiliary heater, and water valve. Study this installation diagram to get the best result with your wiring work. (Click image to enlarge)

 Auxiliary Heater Installation Diagram (G Models) For 1979 GMC Light Duty Truck (Series 10 35)