Joseph, the monitor on our 2006 was in the visor, and sketchy at best. It died 2 years ago, and finding no reason, I decided to replace with a rear view mirror clip-on style, 7 inch screen, from Tadi Brothers.
It's the wireless type, no running of cables. Works great, second year now. Nice, crisp, color monitor. Tapped into the wire going into the old monitor for power, hiding the wire up in the headliner "lip"
that nearly touches the windshield. Tapped into one of the marker lights nearest the camera for power back there. So the lights do need to be on for the system to work.
There also is a small antenna up front that I velcroed near the mirror, and is tied into the wiring to the monitor.
Jim