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Horn doesnt work

Old Aug 15, 2017 | 07:50 PM
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Default Horn doesnt work

Horn not working, but i get a click from the relay, and ive tried replacing it with the other two down there and always it always clicks so i know its getting the juice every time i hit the horn button.

I tested the wires to the horns, i has power on both sides.
Tested both horns, one works, but not hooked up obviously.

test light confirms horn fuse is good.

Now im friggen stumped
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Old Aug 15, 2017 | 08:17 PM
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Have you tried swapping the horns around? If the horn that currently works still works on the other side and the horn that doesn't work still doesn't work on the other side, you probably have one bad horn.
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Old Aug 15, 2017 | 08:24 PM
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Originally Posted by HeBeGB501
Have you tried swapping the horns around? If the horn that currently works still works on the other side and the horn that doesn't work still doesn't work on the other side, you probably have one bad horn.
i tried that first, neither horn works while hooked up to the jeep, only one horn works when jumping it to the battery
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Old Aug 15, 2017 | 08:27 PM
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So, replace the horns?
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Old Aug 15, 2017 | 08:29 PM
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one works when removed and jumped to the battery,

im trying to get help on why its not working when hooked up like normal
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Old Aug 15, 2017 | 08:47 PM
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How much voltage are you getting at the plug?
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Old Aug 15, 2017 | 08:54 PM
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Vehicle running 12+, not running 10.58 is the lowest
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Old Aug 15, 2017 | 08:59 PM
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The only other thing I can think of is that if your horn grounds through the mount, make sure there isn't any rust, paint, or corrosion there. The same goes for the connector.
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Old Aug 15, 2017 | 09:04 PM
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Should I read power at the wires if the horn is not being pressed
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Old Aug 15, 2017 | 09:43 PM
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No. It should be 12V at the connector only when pressing on the horn. 0V otherwise.
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Old Aug 15, 2017 | 09:55 PM
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Ummm why might I get a reading without the horn pressed?
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Old Aug 16, 2017 | 08:28 AM
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Looking at your profile, I see you have a 99.

Is the airbag light on?
Does cruise control work?
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Old Aug 16, 2017 | 09:38 AM
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No airbag light, the clock spring is new and cruise does work.
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Old Aug 17, 2017 | 09:58 AM
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Note from DJ
Your profile states that you have a 99XJ; if that is true I think this is the problem with your horns.
If the information that I’m offering solves the problem please acknowledge that the problem was solved and how.
You have two wires to each of your horns and one wire will always be powered; that is the way they are designed to be.
Your horns are wired with a switched ground through a relay in your inside fuse panel; when you press the horn button it completes a path that closes the relay which completes a ground path to the horns and they are start honking.
I am inclosing a diagram of the inside fuse panel that list a horn relay that I think will match yours.
Remove the indicated relay and replace it a few times just in case you have pore contacts.
Try honking the horns; if no honk but the relay is clicking replace the relay it is no good.
Hope this information solves your problem.

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Old Aug 17, 2017 | 11:32 AM
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Originally Posted by djgrayxj
Note from DJ
You have two wires to each of your horns and one wire will always be powered; that is the way they are designed to be.
Bingo? That's the only way it makes sense to always have voltage present at the connector...

I was assuming it was like my '00 and only has one wire to each horn, and grounds through the body. I guess that's what I get for assuming.

Last edited by Tbone289; Aug 17, 2017 at 11:38 AM.
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