bobbytory

I have a 2009 Ford F1 50 and I will be installing a JVC KW-V420BT, with aftermarket mid and high amp and subs and sub amp, I will be tying my output speaker leads on the outgoing side of the factory Sony amp to utilize the existing wire to New replacement speakers and tweeters, there are two questions I need to ask you and they are I have a factory back up camera in my rearview mirror, and I want to change it to the head unit and will the maestro wiring harness provide the 12v turn on for the camera and how do I go about getting video to the head unit from the existing camera ? And second I do know you can cut off the factory amp when maestro idatalink is flashed, but what I was wondering is there any possibility to retain the center channel without going through aftermarket amps, or interfering with the fade and balance of said amps ? Thank you kindly for your time and any help !