On the Steering...
Near the engine (inside the bonnet)
How do you repair 1999 Honda Civic Horn?
The horn relay is mounted underneath the dashboard on the 1995 Honda Civic. The unit is mounted on the upper right of the cabin fuse box.
The 1997 Honda Civic Horn relay is found under the drive side dash panel. The relay is mounted next to the starter relay on the right side of the fuse box.
http://wiki.answers.com/Q/Where_is_the_horn_relay_on_a_1995_Honda_Civic"
More than likely a blown fuse or defective horn relay.
The relay just plugs into the fuse/relay box, installing it means reading the owners manual to determine the correct location and plugging it in.
First thing to check is the fuse. If the fuse is good check the relay. If that is good check wiring. Can also be the horn switch or the horn itself.
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.
not having a horn
red
bolted to the frame, behind bumper cover, passenger side.