After 35 years in business, a walk-in customer told us why so many car and truck horns have miscellaneous dents. They are on the surface sheet metal in no particular place.
To our customer, it was easy to understand. He told us: “If the horn fails to operate the vehicle owner hit it with a wrench or hammer to start it working again”.
We went a step further. If the first few hits does not get the horn to make noise, then you hit it harder!