Electrical Circuit

Current flows from the accessory terminal to the ignition switch to the 25 ampere fuse in the block and then to the amplifier, the ambient sensor, and to amplifier, the ambient sensor, and to the master switch. The master switch sends current through a diode assembly (which is incorporated into only FLEETWOOD models) and energizes the compressor clutch when the front system's ambient switch is closed. The diode is used to permit the master switch of either front or rear unit to supply current to its own compressor clutch without causing a feed back into the other system. A feed back from one system into the other would cause the master switch of the unit receiving the undesired feed to be overridden causing the blower to operate even though the system was turned off. The diode assembly is mounted on an instrument panel molding stud to the right of the radio in the dash panel.