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Autommotive electrical experts

This is a discussion on Autommotive electrical experts within the XDTalk Chatter Box forums, part of the XD Talk category; This will be an easy one for you guys. I have a 10 year old SUV that the dual OE horn has gotten sick and ...

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Old 06-13-2012, 04:53 PM   #1
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Autommotive electrical experts
This will be an easy one for you guys.

I have a 10 year old SUV that the dual OE horn has gotten sick and nneds to be replaced. I have located a set of electric horns that I want but they are a ONE wire. The OE horns on my SUV are a TWO wire.

Can I test the plug on mine, find which wire is the HOT and then simply hook the one wire horn up to it? Provided that I have a good frame/body ground will this method work?

Thanks
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Old 06-13-2012, 05:03 PM   #2
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Google

How to Wire a Car Horn | eHow.com
How to Fix a Broken Car Horn: 10 steps - wikiHow

Not sure why OEM has two and after market has one..unless one wire is a return ground or something

Have you tried to see which wire is the one that is the contact "on" for the horn switch with a multimeter?
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Old 06-13-2012, 05:20 PM   #3
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Originally Posted by AwPhuch View Post
Google

How to Wire a Car Horn | eHow.com
How to Fix a Broken Car Horn: 10 steps - wikiHow

Not sure why OEM has two and after market has one..unless one wire is a return ground or something

Have you tried to see which wire is the one that is the contact "on" for the horn switch with a multimeter?

What I am attempting to do is not only replace the OE horns but then to "upgrade" them with an older and MUCH better set of horns . The older GM horns are a one wire which means I need to ground them to the body. I am okay with that as long as my SUV will power them through the regular steering wheel horn button and such.
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Old 06-13-2012, 05:41 PM   #4
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Old GM may have actually been three wire. Frame ground and two hots, Hi tone and low tone. But both hot.
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Old 06-13-2012, 06:23 PM   #5
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most cars use 2 wire horns, use grounding to make the horn blow. thats why you often hear horns blowing after accidents by grounding switching you can several things setup to blow the horn with out having a mess of relays or getting feedback to things you don't want to energize like air bags.
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