rear camera

I have a 2 channel dash cam. I set up the front and hardware with no problem. Works great! Now to my dilemma. I can't find any videos or post (facebook or Volt forum) on rear camera setup. I was able to run the camera cable to the back, but I'm stuck on placement and\or alternative wire routing.

I just bought a used 2013 Volt. Love it so far. Great engineering, etc. But ergonomics? Not so much. Weird placement of controls and obscured vision. There is a safety-related question I thought I'd throw out for comment. No doubt frowned on, or even forbidden by DoT, I'd love to glance at that...

I asked at my unplugged test drive how to enable the rear view camera. I was told by the right seater it activates when the car is in reverse. "No way to activate it while in drive?" "No" was the answer. That's not a rear view camera, that's a backup camera... If this is true, is there a reason...