HORN Horn Wiring Diagram for Isuzu Pickup 1 Ton 1990Unlock Lifetime Access for This Car.List of elements for Horn Wiring Diagram for Isuzu Pickup 1 Ton 1990:(ls model)10aContact ringFuse 4Fuse/ relay box (right side of engine compartment)High note horn (behind right side of radiator grille)Horn switchesHot at all timesLow note horn (behind right side of radiator grille)Steering wheelRADIOPOWER WINDOWSPOWER DOOR LOCKSHORNSTARTING/CHARGINGWIPER/WASHER