Detect Factory Alarm Active, 2016 Ford Mustang

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=147274
Printed Date: May 09, 2025 at 10:52 AM

Topic: Detect Factory Alarm Active, 2016 Ford Mustang

Posted By: stefjoseph
Subject: Detect Factory Alarm Active, 2016 Ford Mustang
Date Posted: February 27, 2022 at 5:08 AM

Hi, Im trying to get a 12v trigger when the factory alarm on My 2016 Ford Mustang goes off.
Ive tried going to the alarm siren but that is activated by CAN bus, the horn also triggers but I think that's from the BCM? Which would mean id get a negative trigger even if I push the horn manually?

I basically want someway to detect the factory alarm going off which will send an output to my aftermarket GPS tracker.

Any ideas on how to achieve this?

Thanks!

Replies:

Posted By: audiokid1
Date Posted: February 27, 2022 at 9:19 AM

Instead of grabbing the Violet/Green (+) wire for the horn at the horn or battery junction box... I would grab the Blue/White wire at pin 20 of the C2280F (40 pin connector) at the BCM. The output is negative, so use a relay to invert the polarity.

Posted By: stefjoseph
Date Posted: February 27, 2022 at 1:38 PM

Thanks for the reply! but would that trigger my GPS tracker if honked the horn while driving?

Posted By: audiokid1
Date Posted: February 27, 2022 at 9:36 PM

Yes....yes it would.

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