This forum is "hands-on" so I thought I would post this here.
Here are pictures of the digital wireless camera I installed (though Yahoo jumbled them out of order):
http://groups.yahoo.com/neo/groups/road ... 1431831314
So far I am happy with the camera. I get no interference that others have complained about with analog wireless cameras.
The install wasn't too bad, especially since I did not have to run a camera cable from the camera to the monitor or monitor box. Installing the transmitter in the right rear brake/turn signal light area took some work to route the cable there.
I made a monitor mount from a thin sheet of RV aluminum siding. I used 4 small socket head cap screws threaded into the aluminum to attach the monitor (see the picture). The camera mount is made from thin aluminum also.
I wired the camera to the parking lights so I can turn it on when I want. You can turn the monitor off if you don't want the camera on at night.
The camera is not high resolution nor does it have a large field of view, but it is sufficient to make sure I am not going to run into anything backing up. It has proven handy to keep an eye on my boat trailer when towing.
The unit is made by YADA. I got it at Pep Boys but it is also available on Amazon.