Should I replace the horn relay? - Team Camaro Tech
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post #1 of 15 (permalink) Old Mar 22nd, 10, 05:31 AM Thread Starter
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Should I replace the horn relay?

Do I need to replace the horn relay? I'm not really sure what it does.
I purchased the regulator #VR715 and new front light wiring harness. My lights were going dim, which I was told the cause was the regulator. If so, where can I get it?

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John
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post #2 of 15 (permalink) Old Mar 22nd, 10, 06:17 AM
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Re: Should I replace the horn relay?

The horn relay blows the horn, that is all it does.

It's also used as a junction block on the driver's side of the rad support, but that is a passive function, it does nothing in that role but provide a convenient place to attach a few wires.

If your horn blows, it doesn't need to be replaced.
(unless it's excessively old and ugly)

You can order replacements at any autoparts store.





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post #3 of 15 (permalink) Old Mar 22nd, 10, 06:18 AM
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Re: Should I replace the horn relay?

Do your horns work? If yes, then no dont replace it. If they dont work then find out why not. The horn relay gives a good blast of 12 Vlts to make those suckers announce. You can get the VR at any parts store.
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post #4 of 15 (permalink) Old Mar 22nd, 10, 06:42 AM Thread Starter
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Re: Should I replace the horn relay?

Quote:
Originally Posted by JimM View Post
The horn relay blows the horn, that is all it does.

It's also used as a junction block on the driver's side of the rad support, but that is a passive function, it does nothing in that role but provide a convenient place to attach a few wires.

If your horn blows, it doesn't need to be replaced.
(unless it's excessively old and ugly)

You can order replacements at any autoparts store.
Thanks
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post #5 of 15 (permalink) Old Mar 22nd, 10, 08:44 AM
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Re: Should I replace the horn relay?

Key buzzer is also part of the horn relay function for a '68.
If the pink wire is connected, then the key buzzer should work if ign key is installed and drvr door is open.

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post #6 of 15 (permalink) Old Mar 22nd, 10, 07:24 PM
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Re: Should I replace the horn relay?

Actually, I have aquestion here as well, when I push the horn in that car, I hear a "click" with each push of th ehorn...

Do I need new horns, or a new relay?

Keith
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post #7 of 15 (permalink) Old Mar 22nd, 10, 08:05 PM
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Re: Should I replace the horn relay?

To me, the horns maybe stuck. You can try to tap the horns with a hammer to free the insides. You can hook up a spare horn if you have it to see if the horn relay is good.

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post #8 of 15 (permalink) Old Mar 25th, 10, 09:24 AM
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Re: Should I replace the horn relay?

Quote:
Originally Posted by keithl1967 View Post
Actually, I have aquestion here as well, when I push the horn in that car, I hear a "click" with each push of th ehorn...

Do I need new horns, or a new relay?
disconnect the plug going to the horn. Hook up a test light between that plug and a good known ground. If pushing the horn button lights the test light, then the prob is in your horns.


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post #9 of 15 (permalink) Old Mar 25th, 10, 05:31 PM
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Re: Should I replace the horn relay?

well...I whacked the horns with a hammer, then tried them out...got one quick note out of them, then just started clicking again--did this three or four times...

I guess the innards of the horn are shot!

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post #10 of 15 (permalink) Old Mar 25th, 10, 05:53 PM
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Re: Should I replace the horn relay?

I have no horns and no key buzzer?? Could it be the relay???
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post #11 of 15 (permalink) Old Mar 25th, 10, 06:03 PM
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Re: Should I replace the horn relay?

From Mad Electric...
The term "buss-bar" means a "common" connection, where wires all connected to the same circuit can come and go.

"Junction block" is another term often used to describe this function.

On our project car, the alternator output wire is routed directly to this buss-bar. The dash area main power-up wire originates at this buss-bar. The battery charging wire is connected at this buss-bar. And, the voltage regulator takes "sensing voltage" reading here, and adjusts alternator output to maintain voltage level at this buss-bar (14.0v to 14.5v).



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post #12 of 15 (permalink) Old Apr 16th, 10, 10:56 AM
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Re: Should I replace the horn relay?

I have a question, so if the horn relay is bad, would this case charging problems? Last night my horn stop working, I tried tapping the horn with a hammer and no success. I'm getting a clicking sound from the horn relay, and I notice a voltege drop on my meter. Should I replace the relay or the voltege regulator?
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post #13 of 15 (permalink) Old Apr 16th, 10, 02:14 PM
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Re: Should I replace the horn relay?

If it's clicking it may be working. Try a voltage reading at the horn...it may have gave up the ghost

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post #14 of 15 (permalink) Old Apr 21st, 10, 07:42 AM
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Re: Should I replace the horn relay?

Quote:
Originally Posted by DOUG G View Post
If it's clicking it may be working. Try a voltage reading at the horn...it may have gave up the ghost
You were right my horn relay was working; it turned out to be the horn itself. Replace with a new horn and everything seems to be in order including the charging, reads about 14v.
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post #15 of 15 (permalink) Old Apr 21st, 10, 09:04 AM
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Re: Should I replace the horn relay?

Getting lubricant to the inside sometimes revitaltizes the horn. If the horn is replaced the date it has may be valuable to someone. Don't throw it out.
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