Pwede naman sa signal (ganun lahat ng alarm ko). Benefit nito, hindi na kailangan magflash ng ilaw sa loob ng car (gauges, center console etc.). Any alarm can be made to run like this with the right installer.

Ignition kill relay yun. It prevents the car from starting when the system is armed. Free lang naman ikabit yun, just tell your installer. On some vehicles, hindi applicable ito (e.g. may immobilizer, conflict sa wiring, etc.)