I decided not to wait, $242 Amazon had a dual camera system, via Blue tooth and an 8" lcd screen which can show either of both cameras.
I have a view down on the trailer bumper and a "rear view mirror" camera. The images are bit slow and skip frames when moving fast but its perfect for parking, backing up, and highway congestion.
Also the 8" LCD fits perfectly in the center tray and plugs into the outlet there, Always on if trailer is attached, removed when not towing and leaves the 12" screen free for Music and directions.
This one was a real miss on RAM's part, next I will add the Trailer Tire Pressure sensors also NOT OEM also for 1/5 the cost.