I am going to use this kenwood unit to select from different video sources. This link doesn't show the controllers. I had a link to etronics.com but their site is down right now. Here is a link to a different site. It costs 159.00 at etronics.com. This way all three of my screens will be able to switch between 1) nav screen, 2) dvd/line in, and 3) rear view camera. The over head screen will automatically do this whenever the H2 is in reverse. Other inputs are also possible on the lz-800 and other monitors. The kenwood unit is
http://www.car-audio-experts.com/ken...kva-s300.shtml I found jonathan on another thread and called him. It turns out several people are using him to do the same thing with several different kinds of monitors. That link is
http://www.elcova.com/groupee/forums?a=tpc&s=2826088551&f=6706011751&m=506606888 1. He is very friendly and good to deal with.