HORN Horn Wiring Diagram for Jaguar XJ-S 1990Get access to all wiring diagrams of the car List of elements for Horn Wiring Diagram for Jaguar XJ-S 1990:15aFuse 3Fuse 6Horn (center front of engine)Horn relay (left front of engine compartment)Horn switchHot at all timesHot in run or startNcaUnderhood fuse box: black (left side of engine compartment)Underhood fuse box: white (left side of engine compartment)DEFOGGERSCOOLING FANPOWER SEATSPOWER ANTENNAHORNPOWER WINDOWSPOWER MIRRORSPOWER DOOR LOCKSSTARTING/CHARGINGRADIOWIPER/WASHER