Car Horns
Late Model 1979-New Ford Mustangs

Where is the horn and horn relay on a 1991 Mustang 5.0?


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2004-09-27 18:20:17
2004-09-27 18:20:17

The horn is mounted to the frame behind the driver side front fender just ahead of the front tire. If you have a wheel well shroud, you won't see it. You'll have to lay on your back and you'll see it through an opening at the bottom of the fender. Horn relay location I don't know.


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I've replaced mine twice now. The switch pads built into the steering wheel on my 97SC2 each have two small 'bubble' contacts (one at the top and one at the bottom of the switch). Pressing either switch will make the horn relay cycle and the horn blow. 97s are one of the years that have the relay integrated on the horn bracket (both located under the drivers side headlamp). If your model has a separate relay, it will be in the under-hood fuse block alongside the fuses. There is also a small chance that the 'clock spring' is bad. The clock spring is a set of wires that sit under the air bag on the steering wheel and carry the light switch, horn, etc wires (It's how the horn and switches can work while you are turning the steering wheel). Don 't forget to check wiring for chaffed wire or loose ground connection. Factory Switch runs $32, Horn (with relay) $50, clock spring $120 Good luck

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