Horn relay question

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=21504
Printed Date: May 15, 2024 at 1:37 PM

Topic: Horn relay question

Posted By: zzrr11
Subject: Horn relay question
Date Posted: November 15, 2003 at 12:16 PM

I have been collecting very old 12 volt truck horn, restoring them and now I want to install a set on my s-type, Yukon and GMC PU.They sound great and will get any idiots attention. I imagine I cannot and have not tried to hook direct to stock horn lines. Can I use a relay from the stock horn wireing at the horn and if so what kind of relay do I need. These horns are fifty's semi horns and draw a bunch of juice. Got them all on Ebay for under twelve bucks a set and do they sound nice........Thanks

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ThanksMuch

Replies:

Posted By: defective
Date Posted: November 15, 2003 at 12:46 PM

just a normal 30/40 spdt relay should work.

if it's a positive output from the horn button

85 - ground

86 - horn button

30 - battery

87 - horn 12v wire

if it's a negative

85 - battery

86 - horn button

have fun and think about the neighbors...laugh

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