Auto Relay

Mounted on firewall in engine compartment. Relay will be energized whenever the Engine Thermal Switch is open or the In-Car Temperature Switch is closed and the selector control head is in "Auto", "Hi", or "De-Fog" position and is immediately energized in the "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.