1986 CJ7 Horn problems - JeepForum.com

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post #1 of 18 Old 03-10-2011, 08:08 PM Thread Starter
elboe805
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1986 CJ7 Horn problems

Hello All;

First off, I'm new to the Jeep world and I want to thank everyone for the knowledge that they freely share with a noob like me... You guys Rock!

My question- My horn quit working today... I can't seem to find a diagram for the fuse panel (I'm gonna sack up and buy the Haynes manual this weekend.) So;
1) Is there a fuse in the panel for the horn?
2) If so, where is it?
3) Or is there just the horn relay?

I'm not hearing any "clicking" sounds when I depress the horn in the cab so I'm wondering (if there is one) if it's a bad fuse. Any ideas?

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post #2 of 18 Old 03-10-2011, 09:05 PM
lanecj5
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The horn relay is at your left knee if sitting in the drivers seat.Reach up under the dash...Square relay 1"x1".If its not clicking then your right..check the fuses.Replace every blown fuse in the box.Press the horn..did any fuses blow?If yes it could be a short in the relay;replace the fuse...unplug the relay.Get your volt meter or light, test the power in side of the wire connector by pressing the horn,Do you have power?Did another fuse blow?also bypass the horn button and relay by running a jumper wire over to your battery from the positive side of the horn to the pos. post on the battery..Did it blow?If it did the horn is good.Go back to the relay its just a few dollars;replace it.If it continues to blow fuses it could be a shorted wire..trace the wire from the horn(red/white).
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post #3 of 18 Old 03-10-2011, 09:08 PM
Ken4444
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This post has links to the 84 to 86 factory service manual which has schematics:

http://www.jeepforum.com/forum/f8/84...27/index2.html

"I give you a republic, if you can keep it." - Benjamin Franklin
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post #4 of 18 Old 03-11-2011, 06:08 AM Thread Starter
elboe805
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Thanks for the info guys... LOL- This is already getting addicting and I've only had the Jeep 3 days!
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post #5 of 18 Old 03-11-2011, 07:46 AM
Ken4444
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Glad to help! And, welcome to Jeepforum! You'll find a lot of helpful folks here. If you're spending any time behind the dash panel troubleshooting electrical stuff, and you decide that your gauges aren't working right, this apge is very helpful:

http://home.roadrunner.com/~john.str...for_cj_gau.htm

"I give you a republic, if you can keep it." - Benjamin Franklin
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post #6 of 18 Old 03-11-2011, 08:39 AM
DT5150
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you can hook up the horn itself directly to a 12v battery and see if it works. no blow, buy a new horn. easier than checking fuses and relays, and could save you some time and trouble. i always try the easiest things first.

SOLD! 83 CJ-7. TBI Small Block Chevy 350/TH350/D300, Scout II Dana 44 front, CJ Dana 44 rear. 4" BDS Lift with 35's. Currently Jeepless.
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post #7 of 18 Old 03-11-2011, 11:58 AM
Erik719
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Had the same problem on my'83. Turned out to be the horn button in the steering wheel, but I found that out by following the trouble shooting mentioned above.

'80 CJ7 - Gone but not forgotten
'83 CJ7 - Donkey
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post #8 of 18 Old 06-07-2011, 04:36 PM
txrj
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Thanks guys! I just came across this post when my horn stopped working on my 85 Jeep Cherokee, and apparently I have that same little white little square relay under my dash and it had come a little loose. Once I pushed it in all the way, my horn was working again and I was able to pass vehicle inspection!
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post #9 of 18 Old 06-07-2011, 05:08 PM
MoC
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Also check the ground. If you hear a clicking the relay should be working. The horn grounds off to the fender it is attached to through the screew that holds it in place.

Under A Sun Thats See It All Before...
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post #10 of 18 Old 06-07-2011, 05:10 PM
wellmax
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the problem with the horn on my 84 cj was in the steering wheel horn button.
got it fixed, but that was a horse of a different color, hope your problem is the relay or horn itself.
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post #11 of 18 Old 06-07-2011, 06:41 PM
BagusJeep
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If you prise off the steering wheel boss you will see the electrical switch is real simple, a circle of copper. If you have a meter you can test the innards in a few seconds or just try pressing it in. If it operates correctly you need to bend the copper out a bit so the button hits it.
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post #12 of 18 Old 06-07-2011, 06:46 PM
MoC
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Quote:
Originally Posted by wellmax View Post
the problem with the horn on my 84 cj was in the steering wheel horn button.
got it fixed, but that was a horse of a different color, hope your problem is the relay or horn itself.
Quote:
Originally Posted by BagusJeep View Post
If you prise off the steering wheel boss you will see the electrical switch is real simple, a circle of copper. If you have a meter you can test the innards in a few seconds or just try pressing it in. If it operates correctly you need to bend the copper out a bit so the button hits it.
Likely not the horn button since the OP said he heard a clicking when he pushed the horn. The clicking is likely the horn relay which means the horn button itself is working.

Under A Sun Thats See It All Before...
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post #13 of 18 Old 06-07-2011, 07:15 PM
Coiz
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Garage
You do realize the OP was three months ago. He never came back to tell us what fixed it.

Mike
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1979 CJ7, FI 5.0L Ford, NP435, D300, Full floated D44 Detroit, D30 Detroit EZ Locker.
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post #14 of 18 Old 06-07-2011, 07:19 PM
MoC
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Quote:
Originally Posted by Coiz View Post
You do realize the OP was three months ago. He never came back to tell us what fixed it.
Nooooooooooooooooooooooooooooooooooooooooooooooooo o!! Say it a so!! Woops!

Under A Sun Thats See It All Before...
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post #15 of 18 Old 06-07-2011, 07:20 PM
Ken4444
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Quote:
Originally Posted by Coiz View Post
You do realize the OP was three months ago. He never came back to tell us what fixed it.
JF forum regulars, used and then thrown out like a greasy paper plate...

heh

"I give you a republic, if you can keep it." - Benjamin Franklin
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