I've been trying to install one. From my experience, do not go with a wireless. They really blow. The signal is very flaky and the camera options aren't as clean as I'm looking for.
My first round was XO wireless.
XOVision - Leader in Mobile Entertainment
RM800HT
My second attempt will be a wired soution from Boyo.
This is what I ordered.
Vision Tech America
and
Vision Tech America
I can't really tell what additional equipment I'll need because the info on the items isn't very detailed.
In order to wire this, it requires you taking out just about all the panels in the hatch area just to fish the wire through. I hate having these monitors mounted to the window, so I plan to custom manufacture a bracket that I'll velcro fit to the dash just behind the instrument cluster and between the three guages, so it'll look like a 4th guage. (I wish I could find a round LCD and replace the clock with it.)
I hope to tackle this next weekend.
I'll be posting pics when it's done.
-ZCarGo-