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Trailer Protected?

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=28381
Printed Date: June 10, 2024 at 7:45 PM


Topic: Trailer Protected?

Posted By: domiyork
Subject: Trailer Protected?
Date Posted: March 14, 2004 at 7:53 PM

 Hi,

 How can protect my trailer ( JEt Ski), So when the plugs for all the lights going to the trailer is unplug,  this would activate my car alarm?. My alarm only offers one motion sensor and I would like to keep that in my car. I got a ground going to the trailer, is there a way that when this is unplug it will set my alarm, if my motion sensor wont p- it up?

 Thanks.    




Replies:

Posted By: derek123
Date Posted: March 15, 2004 at 8:55 AM

Try a pull up:

Ground a wire in the trailer, run it (in) to the vehicle. In the vehicle, run a ( different) wire to +12volts , run this wire through a 10 K resistor, and connect it to the wire comming from the trailer. connect the wire from the trailer to the + alarm trigger.  The wire from the trailer will 'hold' on ground until the ground is taken away ( thief disconnecting the trailer), when the trailer is disconnected, the +12 volts will be sent to the + alarm trigger ( setting the alarm off).

You may want to add a switch, so you can turn off the signal going to the alarm, when the trailer is not connected (when you are not using it).

good luck :)


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