horns
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New User
Joined: Nov 2004
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From: Gadsden, TN
horns
Hey guys, My 72 F-350 horn does not work. I can get the horn relay to click, but no horn. Does that mean that the horn itself is bad. It there a way to check the horn out to see if it is defective? If it is, Does anybody know where I can get one?
Thanks
Thanks
Lead Driver
Joined: Jan 2003
Posts: 9,893
Likes: 12
From: Ohio
If the relay is clicking...then most likely the horn is bad. They do go bad.
If you have a test light or voltmeter...unplug the horn and see if you get power when you hit the horn.
As for horns...depending on what you want to replace it with that is up to you. I put a "Highway Blaster" on my '67. Azone special. If you want original horns...check out the classifieds here for someone parting out a truck.
If you have a test light or voltmeter...unplug the horn and see if you get power when you hit the horn.
As for horns...depending on what you want to replace it with that is up to you. I put a "Highway Blaster" on my '67. Azone special. If you want original horns...check out the classifieds here for someone parting out a truck.
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Originally Posted by Faltura
Hey guys, My 72 F-350 horn does not work. I can get the horn relay to click, but no horn. Does that mean that the horn itself is bad. It there a way to check the horn out to see if it is defective? If it is, Does anybody know where I can get one?
Thanks
Thanks
Get a piece of wire about 4-6" long with about a 1/4" exposure on both ends. Hold the ends of the wire tightly to the steering column going around the rag joint. Have a helper mash the horn button to see if it blows while you are grounding it there.
There is a ground inside of the rag joint area that can get broken and the horn wilol hardly blow. I have a jumper wire on mine and the horn blows when called on.
Let us know the results if you try it.
John
Lead Driver
Joined: Jan 2003
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From: Ohio
Hmm, never heard of that one John. If the relay clicks, then the horn will sound no matter what(as long as horn is good). Can't see why the rag joint would cause a weak horn. I would assume the column would ground thru the bolts holding it to the dash?
The steering column is the ground for the relay only. If the horn itself was not grounded well to core support then I could see it not sounding well. Sounds like you have a really weird situation. Never know with these older trucks.
The steering column is the ground for the relay only. If the horn itself was not grounded well to core support then I could see it not sounding well. Sounds like you have a really weird situation. Never know with these older trucks.
Senior User
Joined: Oct 2004
Posts: 342
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From: Gainesville, Georgia
Disconnect and pull the horn off and take two wires. Connect one wire from the negative terminal on the horn to the negative terminal on the battery. Now take the other wire and connect to the positive terminal on the horn. Now touch the positive wire to the positive terminal on the battery. Horn should blow. If it doesn't, you have a bad horn. This should take all of about 5-10 minutes.
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New User
Joined: Nov 2004
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From: Gadsden, TN
thanks guys. I'll give it a shot this weekend. It looks like the horn has some type of adjustment nut on it. Think turning it may do some good if I can't get it to work by jumpiing it with the battery?
Lead Driver
Joined: Jan 2003
Posts: 9,893
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From: Ohio
That adjustment is probably for the TONE of the horn. More than likely the horn itself is rusted solid or packed full of enough junk that it will not likely sound again.
Heck, it don't work now?? Might as well play with it...........what's the worse that can happen..........it work again.....LOL!!!
Heck, it don't work now?? Might as well play with it...........what's the worse that can happen..........it work again.....LOL!!!
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New User
Joined: Nov 2004
Posts: 18
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From: Gadsden, TN
You were right! I started playing with the screw and such and walla! It began working again. Could have been grounding. It works just the same.
Thanks
Thanks
Originally Posted by Freightrain
That adjustment is probably for the TONE of the horn. More than likely the horn itself is rusted solid or packed full of enough junk that it will not likely sound again.
Heck, it don't work now?? Might as well play with it...........what's the worse that can happen..........it work again.....LOL!!!
Heck, it don't work now?? Might as well play with it...........what's the worse that can happen..........it work again.....LOL!!!
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Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Originally Posted by Freightrain
Hmm, never heard of that one John. If the relay clicks, then the horn will sound no matter what(as long as horn is good). Can't see why the rag joint would cause a weak horn. I would assume the column would ground thru the bolts holding it to the dash?
The steering column is the ground for the relay only. If the horn itself was not grounded well to core support then I could see it not sounding well. Sounds like you have a really weird situation. Never know with these older trucks.
The steering column is the ground for the relay only. If the horn itself was not grounded well to core support then I could see it not sounding well. Sounds like you have a really weird situation. Never know with these older trucks.
I was looking at one from a parted out truck, and saw the ground that mine didn't have.
I can't splain it, just know it worked for me, and thought I'd pass it along for what it's worth.
John
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