After reviewing several threads is this forum about wireless rear view cameras I decided on the Tadibrothers wireless model with a 5" monitor. Installed the camera about two inches below my rear center marker light and tapped into its wiring for power. As I usually travel with my headlights on there is always power to the camera. The monitor and camera are in color with no interruption in signal connection. Very useful in backing into a campsite (it also has low light capability so works well at night). It also helps judging when is the right time to pull back in to the right hand lane when passing vehicles. Installation was relatively easy compared to hard wired installations and I am happy with the results.
