In regards to the door chime and alarm system, i was wondering:

- Does the chime play over the speaker system?
- If so, how does it connect to the speakers? (is there a wire spliced off of
the headunit, amp, etc??)

- In regards to the alarm/security system, does it rely on the door sensors for the alarm?
- When the alarm goes off, it probably uses the horn and not the speakers, right?