i know that the sub has a seperate amp located in the trunk but are the door speakers powered by the head unit or do they have their own amp? if the head unit does power the doors, what kind of power is the head unit putting out? also is there someone out there that has a wiring diagram of the stock system, so i know which wires go to the door speakers and which wire i can use for an amp remote turn on etc? i really don't want to trace al those wires if i don't have to.