Well, I haven't taking it apart yet. But I do know that there is a relay in the factory amp. You can hear it click when you open the door with the keys in the ignition and what not. So it can produce the audio "bong" in the speakers. Anyways, if you have the ability to take apart the factory amp and test the contacts on the relay. Most relays has a diagram of what contact does work. Maybe using your own relay, then I would defiantly take advantage of that.