Stereo & Electronics - Alarm question I need help. Im tired of testing.

Does anyone I mean anyone know of a wire that goes negative or positive when the factory alarm is activated. If so where is it located. I dont care what voltage is coming off, hell I could even use the l.e.d. wires if I could find them. They disapear behind the dash somewhere. I have been testing wires for some time now and cant find jack. Wire any wire that will work.

Thanks,