Horn not working - JeepForum.com
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post #1 of 9 Old 12-09-2018, 05:18 PM Thread Starter
clarkg
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1980 CJ7 
 
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Horn not working

I can't get my horn to work.

I removed the horn and connected a test light in its place. When I pressed the steering wheel horn button the test light came on, so I know I am getting voltage to the end of the wire that connects to the horn.

I connected a meter from a spot on the horn frame to the horn positive terminal. When I pressed the horn button on the steering wheel, I got 12.5V. When I switched the meter over to ohms I got 58 ohms.

This is the second horn I have tried. The first one I tried read open circuit with the ohm meter.

Do I just have two bad horns? These are both used horns. I would have thought if I could measure resistance through the horn it would probably be good.

What is inside a horn? Anything serviceable?

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post #2 of 9 Old 12-09-2018, 05:23 PM
jeepster258
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Try connecting the horn straight to the battery and see if it works. That would determine if the problem is the horn or the circuit.
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post #3 of 9 Old 12-09-2018, 07:51 PM Thread Starter
clarkg
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Quote:
Originally Posted by jeepster258 View Post
Try connecting the horn straight to the battery and see if it works. That would determine if the problem is the horn or the circuit.
Thanks for the suggestion. I already did that and the horn did not work.
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post #4 of 9 Old 12-09-2018, 08:05 PM
BagusJeep
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Did you check the ground? You can have 12,5V and a perfect horn but a bad ground will stop it. CJs are notorious for this.

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post #5 of 9 Old 12-09-2018, 08:31 PM Thread Starter
clarkg
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Quote:
Originally Posted by BagusJeep View Post
Did you check the ground? You can have 12,5V and a perfect horn but a bad ground will stop it. CJs are notorious for this.
You are correct that grounds are usually a problem. I think my problem is the horn.

Is there any way to repair a horn or do you just have to replace it? What is inside?
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post #6 of 9 Old 12-10-2018, 03:53 AM
John Strenk
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Just a coil and a contact.
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post #7 of 9 Old 12-10-2018, 04:50 AM
CJ7-Tim
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Quote:
Originally Posted by clarkg View Post
Is there any way to repair a horn or do you just have to replace it?

Horns usually get rusty inside and they are not worth the time/effort to repair. Stop by any auto parts store, Farm and Fleet, Walmart type store or junkyard and pick up some replacements.
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post #8 of 9 Old 12-10-2018, 07:25 AM
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I recently picked up this set, and have been exceptionally pleased - nice deep sound and plenty loud - not to mention inexpensive. The only snag was that I needed to splice in a second connector on the existing harness for the second horn. Although I hate modifying the harness, this has been a good upgrade IMO.

https://www.summitracing.com/parts/hla-007424801

Hoov
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post #9 of 9 Old 12-10-2018, 10:22 AM
Hotrodssnova
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I just tested my dead horn last night as well. Bought a new one at the parts store for 17.00. Still in the package, but installing tonight.
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