its the same fuse as the brake lights. Look in the fuse box under the hood. Its on the firewall along the passenger side. Look at the diagram on the bottom of the fuse box lid and find the 20A fuse labelled "STOP" (or something similar). There is a small fuse pulling tool inside the fuse box too.
Most likely a blown fuse. But, the horn itself can be defective.
The horn fuse on a 1989 Honda is located in the engine compartment fuse box. The fuse in the engine compartment is in slot 4 and is also used for the brake lights.
Brake lights and horn on a 1992 Honda Accord are all wiring into the same fuse. The fuse is located inside the engine bay fuse box rated as a 20A fuse in slot 42.
An easy fix is just pull the horn fuse
Check the fuse first. If the fuse is good apply 12 volts directly to the horn. If it blows then the horn button on the steering wheel or wiring is defective. If not, the horn itself is defective.
The under-hood fuse/relay box has a fuse/relay called No.13 HORN/STOP 20A.
the horn is in front of the radiator.
Under the hood there is a fuse box on the passenger side. The brake like fuse is located in that fuse box. It is fuse #13 (20amp). To test the fuse hit the horn, if the horn works then the fuse is good.
A horn might not work on a 1996 Honda Accord because of a blown fuse. There is also the possibility that the wire was cut or damaged. The horn is part of the security system. A used car might have the horn wire cut because the previous owner was annoyed by the horn blaring when someone came near the car.
Under the hood at the back of the engine compartment on the passenger side in a black fuse box. What each fuse is for is marked on the top of the box.
The 1991 Honda Accord horn relay switch can be found mounted to the radiator. The horn relay switch will be on the right hand side of the radiator housing.
First Cheack the fuses!!! located under the dash board and check the fuse for the HORN.