Failing horn relay?

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Dec 1, 2021 | 06:51 PM

#11

scott.butler4

Senior Member

Joined: Apr 2020

Posts: 1,077

Here is the wiring diagram you can use. Its a very basic system. Switch controls relay, relay controls horns.

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Dec 2, 2021 | 08:10 AM

#12

hanky

Senior Member

Joined: Jun 2010

Posts: 16,613

Now that you have the diagram, you might just take each part that could provide a ground to the relay and remove them from the circuit one at a time and you may get your answer.

Dec 3, 2021 | 09:24 PM

#13

LEOIII

Thread Starter

Junior Member

Joined: Jul 2020

Posts: 23

Quote:

Originally Posted by scott.butler4

Here is the wiring diagram you can use. Its a very basic system. Switch controls relay, relay controls horns.

hmm, I am not sure how basic that is, to me, but thanks. 😀

Dec 3, 2021 | 09:25 PM

#14

LEOIII

Thread Starter

Junior Member

Joined: Jul 2020

Posts: 23

Quote:

Originally Posted by hanky

Now that you have the diagram, you might just take each part that could provide a ground to the relay and remove them from the circuit one at a time and you may get your answer.

Great approach, thanks.

Dec 3, 2021 | 09:35 PM

#15

LEOIII

Thread Starter

Junior Member

Joined: Jul 2020

Posts: 23

Quote:

Originally Posted by hanky

There is one thing you might consider,

IF,,,,,,,,,,,,,,,,,,,,,,,we are sure the noise is coming from the horn , Just unplug the wire from the horn(s) and see if you still have the noise.

But don't forget to plug the wire back on if you decide to drive the vehicle anywhere.

Quite sure it was the horn. The few times the sound became very loud it was like you were punching the horn firmly.

I replaced the fuse the morning after this happened and in the intervening three days the sound has not reoccured. Dunno. Have driven it twice, everything fine.

Thanks.

Last edited by LEOIII; Dec 4, 2021 at 12:06 PM.

Dec 4, 2021 | 12:45 PM

#16

hanky

Senior Member

Joined: Jun 2010

Posts: 16,613

Fate works in mysterious ways, but NORMALLY,,,if no power is going to the horn, it should not do anything.
Soooo, since we did not come up with a good explanation of what was causing the noise , if it was the horn, ,,,,me thoughts be that it will come back for a return visit.