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Detect Factory Alarm Active, 2016 Ford Mustang


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stefjoseph 
Member - Posts: 2
Member spacespace
Joined: February 27, 2022
Location: New Zealand
Posted: February 27, 2022 at 5:08 AM / IP Logged Link to Post Post Reply Quote stefjoseph
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!
audiokid1 
Copper - Posts: 140
Copper spacespace
Joined: March 17, 2003
Location: United States
Posted: February 27, 2022 at 9:19 AM / IP Logged Link to Post Post Reply Quote audiokid1
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.
stefjoseph 
Member - Posts: 2
Member spacespace
Joined: February 27, 2022
Location: New Zealand
Posted: February 27, 2022 at 1:38 PM / IP Logged Link to Post Post Reply Quote stefjoseph
Thanks for the reply! but would that trigger my GPS tracker if honked the horn while driving?
audiokid1 
Copper - Posts: 140
Copper spacespace
Joined: March 17, 2003
Location: United States
Posted: February 27, 2022 at 9:36 PM / IP Logged Link to Post Post Reply Quote audiokid1
Yes....yes it would.

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