Internals of the 6.2" LCD monitor. Just 4 connections needed, 2 for power and 2 for the composite video signal. Power connection is marked (strangely) 7v, but the power board supplied 9v and it seems to work on anything between 6 and 12v.
Internals of the 7" LCD monitor. The lower circuit board handles power and has a stereo audio amplifier.