Using factory horn Wrangler ’03

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=53690
Printed Date: May 03, 2025 at 8:51 AM

Topic: Using factory horn Wrangler ’03

Posted By: Zenofex
Subject: Using factory horn Wrangler ’03
Date Posted: April 11, 2005 at 4:55 AM

I have installed a clifford matrix 1, into my 03 jeep wrangler 4.0L. And i want to use the factory horn. i looked up my jeep wiring diagram and hooked a spdt relay with the "reverse polarity" hookup described in your relay page and the horn will not turn on. Im wondering if i possible did not wire the relay right can anyone help me with the wiring of my SPDT relay? the car's factory horn is - and the alarm siren wire is +. thanks -Zenofex-

Replies:

Posted By: bretbowman
Date Posted: April 11, 2005 at 5:08 AM

you would want to hook the relay up like this:

POST 85: + output from alarm

POST 86: - Ground to car body

POST 87: - Ground to car body

POST 30: Output to the (-) input on your Horn

Note: If you're not hooking up the siren you're maintaining one of the biggest weaknesses to factory alarm systems (horns are usually mounted on the front side of the radiator where small wire cutters could easily disable your horn BEFORE a break in is attempted. If don't want to use a siren, I'd highly advise mounting an additional horn somewhere INSIDE the engine compartment where it's hard to get to by a hand holding a wire cutter. posted_image

-------------
2002 Toyota Sequoia Limited 2WD (Clifford G5 Avantguard 5 w/ 2 SmartWindows modules) - IT Engineer - NRA Life Member - LDS Return Missionary - Married for time AND ETERNITY - Eternally sealed family

Posted By: KarTuneMan
Date Posted: April 11, 2005 at 12:43 PM

The factory horn wire is RED / Yellow at the steering column, its a NEG(-) trigger.

Most aftermarket alarm remote starts have a negative output for horn honk, but use a relay anyhows.

86 12v, 85 your output from alarm, 87 ground, 30 to the horn wire.

Horn Trigger

RED / yellow

horn switch

-------------

Posted By: Zenofex
Date Posted: April 11, 2005 at 2:05 PM

Hey, thanks everyone for yalls help!!! My clifford alarm has a siren output wire, that is programmable to give out a constant pulse but the output is a +. so thats why i thought id need the reverse polarity relay wiring. Im gonna try yalls suggestions here soon, and ill let yall know the results, thanks again for all the help! thanks -Zenofex-

Posted By: another-kelly
Date Posted: April 11, 2005 at 8:35 PM

quick ad-lib: by KarTuneMan's post, it's right except that 86 should be grounded. if you hook it to 12V it will never trigger the relay