There is no video output from the z2 to an external rear monitor, I've tried several different monitors, and no luck. I can't seem to find any option to turn on the video output other than the mirror/av/dvd option on the source screen which doesn't do anything for me. Could it be a defective Z2 or am I just missing something really stupid (btw tried brand new video cable direct from the deck to screens.

find ur power wire going thru the cable and see it you have voltage there---

probably 12v

Mirror will output whatever is on the front screen

A/v will output whatever's hooked up to the a/v input of the z

DVD will output the dvd video.

There might be something in the setup menu that has to be enabled, don't really remember for sure, though the owners manual should have that info.