Operation CHARM: Car repair manuals for everyone.

With Rear A/C

CIRCUIT DESCRIPTION
The Rear Auxiliary Air Conditioning Module is operated by either of two controls panels in the overhead console. The front control has the capability to override the rear control settings. The controls select the blower fan's three operating speeds: LO, MED and HI.

The fan speeds are controlled by the selector control and the selected speed blower relay. Battery voltage is supplied from the battery junction block to each relay through the RED (2) wire. Battery voltage is also supplied to each relay through the RR HVAC fuse and the BRN (50) wire. The blower speed control switch grounds the relays through the YEL (51) LO speed, LT BLU (72) MED speed or the ORN (52) HI speed wire. The BLK (150) wire completes the path to ground from the blower speed switch to the I/P ground lug.

The front and rear control switch panels in the overhead console are both backlit. With the park lamps on, battery voltage is supplied to the lamps by the PANEL LPS fuse and the GRA (8) wire. Ground is provided by the BLK (150) wire from the I/P ground lug. The panel dimmer switch controls the lamp's illumination intensity.

REAR AUXILIARY AIR CONDITIONING
The rear Auxiliary Air Conditioning Module is operated by either of two controls panels in the overhead console. The front control has the capability to override the rear control settings. The controls select the blower fan's three operating speeds: LO, MED and HI.

The fan speeds are controlled by the selector control and the selected speed blower relay. Battery voltage is supplied from the battery junction block to each relay through the RED (2) wire. Battery voltage is also supplied to each relay through the RR HVAC fuse and the BRN (50) wire. The blower speed control switch grounds the relays through the YEL (51) LO speed, LT BLU (72) MED speed or the ORN (52) Hi speed wire. The BLK (150) wire completes the path to ground from the blower speed switch to the I/P ground lug.

The front and rear control switch panels in the overhead console are both backlit. With the park lamps on, battery voltage is supplied to the lamps by the PANEL LPS fuse and the GRA (8) wire. Ground is provided by the BLK (150) wire from the I/P ground lug. The panel dimmer switch controls the lamp's illumination intensity.