alarm timer

Thread Starter


Joined Nov 22, 2007
My ute has keyless entry. When the you use the remote to lock the doors there is an accessory wire which becomes active, 12v. I would like to connect a self contained backup alarm siren to this. The siren has it's own trigger wires, but I would like it to run for maybe 30 seconds not just while the door is open. Any suggestions would be appreciated.