Horn consantly sounds

There should be a fuse for the horns. Your owner's manual would give the location. It may be in the fuse/relay block under the hood. Is there another fuse panel under the driver's side dash?
There is also a horn relay in the horn circuit. This should be in the under hood relay block, but they only rarely are the problem. The most common problem with no horn is the horn switch under the horn pad on the steering wheel. The metal contact strips often get bent out of shape. You would have to pull the horn pad off to check. The pad may be held on by plastic clips, or maybe Phillips head screws from the back of steering wheel. If that part looks good, you would probably need a voltmeter or test light to start checking for power along the circuit. Sometimes just finding the horns themselves can be difficult. Maybe behind the grill, or seen from inside a fender well (behind the fender inner liner), or mounted to a lower radiator support...somewhere on the front of car.

should be under the hood on the drivers side in a fusebox. There's also a fusebox above the pedals inside the cab. The one under the hood should have a diagram showing you where the horn fuse is. If you want to look for one inside the truck, you need to look in your owners manual. Keep in mind, there's also a relay for the horn.

Look for the horn relay under the hood, there should be either a fusible link feeding it or a fused wire. There may be an inline fuse, and it may feed from a fusebox under the hood.

lp

Behind the right headlight.


1995-1998 - #20 Fuse . On The Fuse panel. 25 amp

in the engine compartment, drivers side behind the battery in front of the around air filter, there is a fuse compartment. Its a mini fuse a #25 fuse. you have find the latch on the compartment to get it to open! According to the OWNERS MANUAL, fuse/relay #4 in the engine compartment fusebox covers the horns.



Read more: http://wiki.answers.com/Q/Where_is_the_horn_and_what_fuses_protect_it_on_a_Ford_Windstar#ixzz174EjHVC3

From what you say I would first replace the horn relay, in the fuse block, if that does not do it I would suspect the horn switch in the steering wheel. If you must, you can disconnect the horn from its plug and jumper the battery right to it with an old extension cord. You will find the horn, looks like a small black fat in the center pancake with a horn opening, more or less under your left front headlight assembly and to the left of the radiator. Bare the ends of the extension cord, have a confederate hold one set to the battery terminals and you touch the other ends briefly to the connectors on the horn. If it toots then your horn is not the bad guy. Relay is a cheap and easy first step, horn switch in the steering wheel is not so easy.

On SL2, the horn is just in front of the radiator in the middle of the car. It is nautilus shaped, although it is difficult to see the shell-like shape while it is installed.

'96 would have a built-in relay in the horn; no relay in the junction box.

Hope help with this.

Sounds like the switch in the steering wheel is stuck if the horn won't stop sounding. They get rusty and stick. Sometimes you can take apart and sand them.

it is behind bumper drivers side. I believe there is a relay in the horn, making the horn unique and origional replacement required. if it has three wires in it then it has built in relay.

The three prong is an older design. They went to a new model so you will have to replace it with newer style assembly, horn and socket.

sounds like a problem with the HORN CONTACT / SIGNAL SWITCH under ther steering wheel. Hope this helps