Changing a siren to horn out put.

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=66562
Printed Date: July 26, 2025 at 8:07 AM

Topic: Changing a siren to horn out put.

Posted By: jmidol
Subject: Changing a siren to horn out put.
Date Posted: November 18, 2005 at 10:46 PM

I put in a magicar alarm keyless entry system. I want to change from the siren that the system came with to my horn instead. I don't know what kind of voltage the magicar system puts out to the siren whether it be plus or minus. Does anyone knows what kind of relay I need and how do I hook it up to so my horn will activate instead of a siren?

Thanks, Mike

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Mike Idol

Replies:

Posted By: mxxmikexx
Date Posted: November 19, 2005 at 1:38 PM

almost all system have a positive siren outpur so..you need a relay to convert the positive siren ouput to a neg. trigger for the horn, however if you do this your horn will be blaring constantly instead of pulsing like you might be thinking it will work.... it would be very annoying.

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Mike Battaglia
Specialized Car Audio
Bensenville IL 60106

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