1989 Mustang Under Dash Fuse Box Diagram 1989 Mustang Under Dash Fuse Box Map Fuse Panel Layout Diagram Parts: Decklid Release, Rear Window Defrost, Courtesy Lamo, Dimmer Switch, Power Mirror, Radio, Fuel filler door release, Heater blower, Low Oil Level Warning, Premium Sound, Warning indicator, Low coolant, Switch, Low Fluid Monitor, Instrument Cluster, Graphic Equalizer, …