1989 Mustang Engine Fuse Box Diagram 1989 Mustang Engine Fuse Box Map Fuse Panel Layout Diagram Parts: courtesy lamps, cigar lighter, radio, warning lamps, turn signal flasher, electric choke, turn signal back up lamps, heater, air conditioning, instrument panel lamps, accessory A/C clutch, windshield wiper/washer, stop lamps emergency warning.