Wiring Diagrams
WARNING: This page is about a different car, the 2002 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
For ignition switch circuit identification, see POWER DISTRIBUTION in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. For multifunction switch circuit identification, see WIPER/WASHER, EXTERIOR LIGHTS and HEADLIGHTS in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
For horn system circuit identification, see HORN in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.