1997 Buick lesaber Where is the horn relay located ?

Do you have a air bag light lit on the instrument cluster ? I ask this because , if the air bag light is lit , could be a clock spring problem . I know ,what the heck is this guy talking about . You have a air bag on the steering wheel ,the horn button is on the steering wheel . The clock spring is located under the steering wheel , in the top of the steering coulmn . It has flat wire tape in side that allows the steering wheel to be turned full left to full right , keeping the horn , air bag , an any other button's on the steering wheel connected electricly to the vehicle. Plus there is a relay , when you push the horn button it energizes the relay turning on the horns. Watch these videos , will explain a little better .
VEHICLE RELAYS Operation Diagnosis
How cars clock spring works

The horn relay is located in the under hood fuse box .

The horn system consists of a single horn, a horn relay located in the underhood fuse block, and driver controlled horn switch in the steering wheel. The horn system is designed to provide the driver with an audible warning to signal pedestrians, other drivers, etc.
Operation
Voltage is supplied to the horn relay coil and contacts at all times through a 10 amp HORN fuse, located in the underhood fuse block. When the driver pushes the horn pad, driver air bag module, the circuit completes and energizes the horn relay coil. This causes the horn relay contact to close. When the contact closes, current travels to the horn and the horn emits an audible warning.

Pull the air bag fuse or disconnect the negative battery cable an wait a few minutes , then you can remove the air bag safely . What country are you from ? Do you have an air bag light lit on the dash as well ? Possible clock spring problem , it's located inside the steering column under the steering wheel . This clock spring allows the steering wheel to turn from right to left keeping the air bag , horn , speed control ( if you have the buttons on the steering wheel ) . Connected electrically . There is also a relay located in a fuse / relay box . Do you know what a relay is ? VEHICLE RELAYS Operation Diagnosis

Any thoughts on how to fix the horn? Test the electrical circuit , horn relay , switches !
VEHICLE RELAYS Operation Diagnosis
Visual Inspection Chart Mechanical Electrical

• Damaged horn
• Damaged steering wheel pad horn switch (part of driver side air bag module)
• Damaged HORN relay
• Damaged speed control servo (if equipped)

• Blown fuse:
  • 15A HORN
• Damaged wiring harness
• Loose or corroded connections

• The Horn Sounds Continuously

• HORN relay.
• Circuitry.
• Steering wheel pad horn switch (part of driver side air bag module).
• Air bag sliding contact

• GO to Pinpoint Test B .

plus the horn is bad .

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.

If your horn keeps going off .it may be due to the horn pad being stuck or damaged or a horn relay being stuck . You can find the relay and unplug it and see if the horn stops then if there is a relay in the same box switch with the horn relay and see if the horn works right it so its a relay problem if not . You will need to remove the air bag/steering wheel pad and inspect the horn pad to see if the contacts are stuck .

It sounds like your clock spring, as we call it, has failed under the steering wheel. To remove the assembly you must first disconnect the negative battery cable to avoid deploying the air bag. There are 2 to 4 screws on the back of the steering wheel holding the horn pad onto the wheel. Remove those screws and carefully lift the horn pad off and disconnect the wire plugs. The horn wire is usually red and the air bag usually yellow. You will need a cheap steering wheel puller from the local auto zone to remove the steering wheel. They have a small round disc type that is easy to use and cheap. Now remove the large nut from the center of the steering shaft. Install the tool and remove the wheel. Now you will see a large round disc or air bag ribbon held on by a clip. use an pick tool and a small screw driver to remove this clip. Now trace the wires under the column and unplug the other end and you can remove the ribbon or clock spring. Now feed in the wiring for the new ribbon and reverse the process to reassemble. While you have the horn pad off test the horn switch to see if the horn pad is bad and may need replaced also. If the switch is good find the horn relay in the fuse box under the hood and see if when you press the horn does it get power from the switch. to test the horn itself apply 12volts to the two connectors on the horn and if it sounds it is OK. The system is made up of horn, horn relay, and horn switch. Thanks for looking for a solution at Fixya.com.

Typical scenario of the horn pad needing to be replaced at the steering wheel, may have to search the wrecking yards for a replacement or take the pad off and try to discover what part of it is bad and try to repair what you have.
Some folks have added a button useing the same twop wires that control the horn pad, thus eliminating the need to find a replacement horn pad in the proper color etc. a hole drilled into the dash and the button installed makes it a lot easier and cheaper and yiou still have a horn.
Every once in a while the horn relay is the culprit but mostly it is the horn pad, be careful of the air bag deploying...disconnect the air bag fuse before doing any work on the electrical inside the car.

take the fuse out