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Old 09-05-2019, 06:52 PM   #1
BFD
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Default Horn Rod replacement

WE Replaced the horn rod on my Dad A The horn blows all the time . with the battery turned on A The brass collar and washer are on the top of the steering Column After forgetting them on first assembly. It grounding out but how to find it or something missing
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Old 09-05-2019, 07:02 PM   #2
Joe K
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Default Re: Horn Rod replacement

The way the system works is the horn is "Hot" all the time - and you ground the system downstream of the horn to blow it. You should read 6V (measure to a ground point) both on the wire leading to the horn and the wire leading from the horn.

If you undo the wiring switch bulb you'll find a plate with "contacts." The center contact should be "hot" similar to the wires. You can try grounding this contact to blow the horn to be sure your problem is elsewhere.

Assuming the problem is elsewhere - now check for continuity between the spring loaded center contact of your switch (upper half of wiring bulb) and the ground you used earlier. With the horn button not pushed there should be not continuity. Press the horn button and you should get zero ohms/continuity. This proves out your switch.

I will wager you'll find the problem in this second half test. If indeed it is the horn rod then perhaps it is defective, or otherwise shorted thus bypassing the switch.

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Old 09-06-2019, 10:08 PM   #3
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Default Re: Horn Rod replacement

Thanks for the help Joe . We tested it today . there is a problem with the actual horn The new horn rod is good Thanks Again
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Old 09-07-2019, 12:10 AM   #4
Tom Wesenberg
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Default Re: Horn Rod replacement

Some horn cover screws are too long, or threaded in to far, and hit the brush holder, which can ground out the horn.
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Old 09-07-2019, 06:04 AM   #5
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Default Re: Horn Rod replacement

Quote:
Originally Posted by Tom Wesenberg View Post
Some horn cover screws are too long, or threaded in to far, and hit the brush holder, which can ground out the horn.
Learned that one the hard way...
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Old 09-07-2019, 11:38 AM   #6
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Default Re: Horn Rod replacement

WE had the cover off Thanks for the info
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Old 09-12-2019, 08:57 PM   #7
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Default Re: Horn Rod replacement

We had the horn repaired . it works great now Thanks for the help
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