Auto Relay

Mounted on firewall in engine compartment (right hand relay). Relay will be energized whenever the Engine Thermal Switch or In-Car Temperature Switch is closed and the selector control head is in "Auto", "Hi", or "DeFog" position and is immediately energized in "De-Ice" position. Closing of this relay will supply current to the blower resistor board in the programmer and the blower will operate at any speed called for by the position of the system controls