1991 MKIII Toyota Supra 1JZ Fuse Box Diagram 1991 MKIII Toyota Supra 1JZ Fuse Box Map Fuse Panel Layout Diagram Parts: headlight relay, heater relay, horn relay, dimmer relay, ABS system, main relay, power socket relay, daytime running light, fog light relay, starter relay, heater, fan relay, main relay, A/C magnetic clutch relay.