Why might the horn not work on a 1986 Honda Prelude?

Burnt out fuse, blown out horn, broken or faulty wiring.... For the faulty wiring you should know that the horns themselves are located inside the front bumper, one on each side near the ends. Look at the underside of the front bumper and you should see a kind of grid where each horn is located. It looked to me like I would have to remove the bumper to get at the horns so I just lived with the problem of one not working until I sold the car. Bob