With A/C

CIRCUIT OPERATION
The Blower Motor speed is controlled by the Blower Switch in the A/C Control Assembly. In the OFF position, no voltage is applied to the Blower Switch and motor. In the LO Blower Switch position, all of the Blower Resistors are in the circuit with the motor so that it runs slowly.

In the M1 and M2 positions, the Blower Switch by-passes some of the resistors, increasing the motor speed. The Blower Motor is fed through the contacts of the Blower Relay. For HI speed operation, Battery voltage is supplied through the ORN wire to the coil of the A/C Blower Relay. The relay is energized and its contacts supply Battery voltage directly to the Blower Motor from a fusible link. With no resistors in the circuit, the Blower Motor runs at high speed.