I installed this system last week:
http://www.4ucam.com/iphone-android-...up-Camera.html
and after a little futzing, it has worked out pretty well.
Camera mounts on licenses plate, feeds from any 12 volt source. I did have professionally installed (was getting my laser jammer installed, so I had it all done at the same time.). Works on both iPhone and Android.
Sorry about the pics, taken with iPad