Adding Siren to Factory Alarm

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=74213
Printed Date: May 09, 2025 at 11:24 AM

Topic: Adding Siren to Factory Alarm

Posted By: Jaice
Subject: Adding Siren to Factory Alarm
Date Posted: March 09, 2006 at 8:25 PM

I have a 2002 Monte Carlo LS, I want to add a siren to the factory alarm, but I don't know which wire is for the factory alarm output to the horn. My horn is located on the passanger side in the front, but I was wondering if anyone knew what wire I would need. The alternate would be to locate the factory alarm box and test from there, but does anyone know?

Replies:

Posted By: redpeppers
Date Posted: March 10, 2006 at 1:02 AM

the alarm is problem built into the BCM on that car. I dont see that being possiable with out the siren working also when u honk the horn.

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Where theres is a wire there's a way.

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