Decelerator (STD cab) Position potentiometer voltage is too high
Reverse clutch is not calibrated
Aux 3rd Raise Coil solenoid shorted to 12 volts.
Low pressure switch (-) input shorted to ground
Reverse clutch is not calibrated
If Air conditioning does not work,possible causes are blown fuse, faulty wiring or loose connections, fxan belt loose or slipping or defective switch or defective compressor clutch.