1991 Lexus LS400 Fuse Box Diagram 1991 Lexus LS400 Fuse Box Map Fuse Panel Layout Diagram Parts: Aengine main relay, magnetic main relay, headlight dimmer relay, heater main relay, horn relay, EFI main relay, BS system, radio, hazard horn, dome light, EFI, seat heater, radio fan, air suspension, headlamp, daytime running lamp, headlight control relay, …