Horn hot wire, 2012 Dodge Ram 2500
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Forum Name: Vehicle Wiring Information & File Requests
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URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=139625
Printed Date: May 10, 2025 at 9:41 AM
Topic: Horn hot wire, 2012 Dodge Ram 2500
Posted By: sumneree
Subject: Horn hot wire, 2012 Dodge Ram 2500
Date Posted: October 26, 2015 at 4:54 PM
Wiring a set of hornblasters air horns to a 2012 Dodge Ram 2500. Could someone please tell me which wire in the steering column loom is the horn wire?
thanks
Ernie
Replies:
Posted By: i am an idiot
Date Posted: October 26, 2015 at 5:02 PM
In the steering column harness it will be a negative wire that will drive a relay. If you need a "Hot" wire you will have to catch that under the hood between the horn relay and the horn itself.
Give me a minute and I will tell you what color the horn wire is in the column harness.
Horn DARK GREEN/ VIOLET (-) IN HARNESS AT STEERING COLUMN
Posted By: sumneree
Date Posted: October 26, 2015 at 5:06 PM
Awesome! I sure appreciate it. sOunds like I will need to pull from the horn itself though. Need a positive to run the air solenoid.
Posted By: howie ll
Date Posted: October 27, 2015 at 4:18 AM
No you don't too much current required, you can either pick up that wire where Mr. I states or it's probably feeding the OEM horn relay under the hood feed another relay from that wire, separately fused.
Never seen a set of air horns that didn't come with a relay.
Or use the factory relay output pick up at OEM horns or relay and increase your OEM horn fuse rating.
First idea safer and failsafe.
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
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