Factory Alarm

[kiyakubuke]

So I understand that the alarm only chirps the horn when locking if there is a "fault". i.e. door not closed etc... However, I would like to have some sort of auditory feedback that lets me know that I have successfully armed or disarmed the alarm. the aftermarket alarm on my pathfinder does this. 1 chirp for armed, 2 for disarmed, 3 for fault (door not closed etc...). My Mercedes also does this with the factory alarm.

my first thought is to wire an alarm horn into the parking lights that flash when arming or disarming. Has anyone done this or have another solution?