Where is the horn

It sounds like you had a jammed or stuck switch mechanism on your horn. When you disconnected the horn's power supply line you may have inadvertently jumped the hazard switching circuit. Try tracing the old supply line for the disconnected horn, and remove it completely from the vehicle to be certain it can no longer carry battery voltage.

The 'A' and 'F' note horns are located underhood at the front right corner of the vehicle. To "disconnect" the horns, pull off the electrical connectors or remove the horn relay in the underhood fuse block. If they are on continuously, consider replacing this horn relay, but the problem may be in the steering wheel assembly.

its part of another system-not separate--somes states its illegal to disconnect horn

Your owners manual will show you exactly where it is...However it is easy to disconnect the horn...You desperately need a horn for safety reasons to avoid a crash...Especially if your state has a safety inspection requirement...Your fuse panel should also have the fuses numbered and a sticker inside the fuse box cover stating which fuse goes to horn....Also you can wear safety glasses and disconnect the battery to avoid air bag explosion..Remove steering wheel center cover where the horn is pressed...,You will see a small wire attached to the cover and to the prong inside steering wheel...It could be loose or disconnected.....If not just disconnect the wire and black tape the terminal end ..Then the horn is disconnected...

You can pull the fuse, disconnect the horn relay, or unplug the horn itself.

I verify its not a stuck relay...

I disconnect connector under dash and horn stops...

I then suspect its the Horn contacts or a worn grounded wire in air bag/horn switch assembly in steering wheel.

The decorative Vinyl cover shrinks with age...presses on horn contacts against air bag.

I Disconnect Air bag connector (identified as Yellow wire and Connector) usually under dash.

WARNING: ( I Do not - I DO NoT probe the yellow harness/connector with a meter or test light. A test light WILL Detonate my air bag, and impale the bracket in a nearby object/person - me.)

I Removed screws (2) behind steering wheel - which allow air bag horn assembly to be removed.

I Disconnect Air bag connector in this location as well (identified as Yellow wire and Connector) and then;

The red (color varies) and black Horn wires will be plugged into ribbon connectors usually (2) two that feed/connect to contacts for horn function on face of air bag.

I pause here and verify horn will stop blowing when I disconnect the wires going to horn contacts. So I get horn blowing again...

Check horn: To verify this is the cause; I reconnect (whatever fuse/relay/ connector (Not the airbag connector) I disconnected so they will stop blowing) and get horn/s so they are blowing again...

Then I disconnect the ribbon connectors to verify blowing stops.

Note: The experience I had with horn on

Buick Park Ave was at night when temperature cools after hot day, the vinyl cover shrank and horn blows... pressing on horn area of steering wheel firmly would stop horn briefly - then continue.

Note: I will need a rivet tool and rivets... to reassemble.

WARNING: I Do not drill into airbag explosive container. If I do not know how to carefully drill off correct rivet heads and remove vinyl decorative cover from air bag/horn... I STOP and go to the junkyard or ebay and purchase/replace the airbag/horn assembly.

I continued by drilling out rivets (the rivets holding vinyl cover) by using a drill bit as large (or smaller) as the head of rivet and drill gently to release head from rivet body/shank.

I mark all pieces with a magic marker to verify I reassemble right side up (all metal brackets and trim plates and cover).

I Remove vinyl cover exposing horn contact pads which were sandwiched between cover and air bag container.

I used a razor blade to remove vinyl honeycomb material from area of vinyl cover - that when pressed - would activate horn/contacts.

Only a 1/16 of an inch or less needs to be removed.

(I Bend cover inside out and shave material off of area slowly. Care not to cut myself.)

I Reassemble in reverse order with rivets.

Check horn: ...function at this point... by plugging in horn connectors and assure horn contacts work properly as expected.

disconnect the horn or horns, operate the horn and see if the fuse still blows. if the fuse still blows then there is most likely a short in the wiring. relays rarely cause shorts. if the fuse doesnt blow with the horn disconnected, reconnect the horn and operate the horn again, if the fuse blows you have a shorted horn.

Well, in the front of the car, lower front bumper I mean where your lower vent grill are, there is this circle metaliic thing, probraly kinda rusted. That is the horn, and what you can do is disconnect the wiring harness there, if not, and you don't really need a horn anymore, you can just cut the wire.

check fuse and also check the wire going to the horn and check the inside of the horn too and check the ground

I’m happy to assist further over the phone at https://www.6ya.com/expert/john_2c7bb9c157d0baa8