In theory you would simply pick up the wire at a known point such as on the horn itself. Then you would follow the wire to where ever it goes keeping an eye out for breaks in the wire, insulation failure or such. You would also check all plug connections to be sure they are tight and not corroded. That is much easier to say then to do. You would also check out any devices along the way. For example there is a horn relay in something called the "convenience center" There you would check the horn relay to see if it works, also verify that the connections are tight and not corroded. There you should also find a wire from the fuse block supplying 12 volts to power the horns as well as the relay itself. If it doesn't have 12 volts then you would check at the fuse block to see if the fuse is blown. It is the courtesy light fuse, should be hot all the time. Last at the "convenience center" is the wire from the horn blow switch in the steering wheel. It should be "open" unless the horn button is pushed, then it should be ground. And at the very last point, the horn blow switch in the steering wheel should be checked. There the wire from the "convenience center" should be grounded when the horn is pushed. If the switch is defective then it won't ground the wire. When the wire is grounded it activates the horn relay causing the horn to sound.
To fix the horn on a 1988 Camaro, check the horn fuse first. Then check the horn relay, wiring, horn, and switch to find the problem.
check your fuses
The wiring to the horn is shorting out at times. Check the horn relay, and the wiring to find where the system shorts when the Jeep brakes.
Apply 12 volts directly to the horn an if it blows it is good. If not it is bad. Check the fuse for the horn. Check the horn relay. Check the horn button in the steering wheel. Check all wiring and the ground connection.
It could be the horn relay, a defective fuse or a shorted wiring. Need to check the wiring first, then the fuse and lastly the horn relay.
under the hood The wire for the horn is part of the front lights wiring harness. The relay is not under the hood. Please, if someone knows, where is the horn relay?
Check the horn fuse first to see if its blown. Then check the horn relay, next the wiring to see what is causing the problem.
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.
If a 1999 Sonata horn stays on, check the fuse and replace it. You should also check to ensure there is not a wiring problem.
You will have to determine what is wrong before you can fix it. Check the horn itself, check the horn relay, the fuse, the horn contact points in the steering wheel and wiring.
Some possible reasons the horn doesn't work on your 1986 Chevy Celebrity: 1. The horn is unplugged or faulty. 2.The horn relay has failed. 3. It has a blown fuse. 4. The horn button or switch in the steering wheel has failed. 5. The horn circuit wiring has failed, is unplugged or some other way is faulty.
well, check all the fuses and check the horn relay if not work. if horn relay sound but horn not working, then you will have to check the clock spring for loose connection or tighting it.you can even look for bad wiring connection to the horn system.
Sounds like a fuse or wiring problem to me. Probably best to check the fuses first since in most vehicles it's easier to access the fuse panel, than yanking out the dashboard to check wiring.
To repair a horn on the 1978 Chevy pickup, first check to make sure the wiring is correct. Then, remove the steering wheel cover in order to check to be sure the wiring is connected to the steering wheel.
Fuse, bad horn, loose wire, bad horn switch, or loose ground at the horn. Check the fuse, apply 12 volts directly to the horn, tighten the horn bracket, check the wiring, and this will eliminate 4 possibilities.
Check the Horn wiring and if this is good then replace the horn.
Fuse? check your fuse box for the fuse indicated "horn" remove and replace if neccessary. if fuse is not the problem, check wiring to horn under the hood in the engine compartment.
Did you check to see if the fuse isn't blown in the fuse box? Check to see if you are getting a good ground when the horn is pressed. Then check to see if the horn is even getting power. If it is then your horn is probably bad.
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.
You have to determine if the horn itself is broken or if it's a wiring problem. First thing, check the fuse for the horn circuit. See if it is burnt out. If it is good place it back in the fuse holder. Next is to check the horn itself. The horn is located on the front drivers side, mounted on the bumper. Get under the car and look up, you should see it. Check all the wiring around it to make sure all the connections are good. If all the connections look good and it still doesn't work, remove the horn. Once you have it removed, connect it directly to a 12VDC source to make sure the horn is indeed dead. If at this point the horn still doesn't work, buy a replacement (install is the same as removal). If the horn does work, there is either faulty wiring or a faulty horn switch (steering wheel actuated).
diagram for the wiring of the horn
The next thing to check on a 2004 Yukon when there is a bad horn is the wiring. Looking for any burned or frayed wires that connect to the horn.
check your clock spring in your steering column, very comon to break or check the wiring into your horn. It's very ... "exposed" and prone to hardening and cracking which makes it loose.
The horn is located in the engine compartment.
maybe the Altinator or crossed wires Check Your fuse box