horn button relay

Printed From: the12volt.com
Forum Name: Relays
Forum Discription: Relay Diagrams, SPDT Relays, SPST Relays, DPDT Relays, Latching Relays, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=95444
Printed Date: July 13, 2025 at 7:28 AM

Topic: horn button relay

Posted By: sobz
Subject: horn button relay
Date Posted: July 08, 2007 at 4:07 PM

I have a 66 mustang and the horn button does not work. I tapped into wires going to the old horn button on the steering wheel with a momentary toggle switch. This worked for a while but I think it’s drawing too much amperage, One yellow wire that I taped into is constant hot with power coming from the headlight switch going to the old horn button on the steering wheel and the other blue wire(Not Hot) goes from the horns into the steering column to the old horn button. I just used two quick taps under the dash right to the new momentary toggle switch. Does anyone know how to wire this momentary switch using a relay? A diagram would be great.

Thanks,
Sobz

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Sobz

Replies:

Posted By: hotwaterwizard
Date Posted: July 13, 2007 at 8:03 AM

Ok I finally found a wiring Diagram for it, https://midlife66.com/wiring/wiring.html

Power comes from the yellow to the switch to the blue yellow.

Here is the Mod I drew to Add a Relay.

posted_image

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John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !

Posted By: sobz
Date Posted: July 13, 2007 at 2:23 PM

John, thank a lot for taking time out to research this project.

Regards,

Bob Sobers

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Sobz