To answer my own post . . .
I'm about to replace the Panasonic backup camera because Google, Panasonic, and Newmar didn't have any info on the camera. Not too suprising as it's 10 years old.
Strangely, TripTek had the most info because a TripTek system was connected to the original Panasonic radio. They referred me to Mito Corp in Elkhart, but by then I had decided to go with a new camera because I wanted audio & IR capabilities.
Anyway, this looks like a saga as I will now have to run a cable from the new backup camera from http://www.rvcams.com
to the new Clarion nav unit.
Talked with Newmar support about how to run the cable and they thought I might be able use the existing camera cable to pull through the new cable. Think again. Tried that. I think there are too many twists and turns in the existing cable.
So let the drilling begin!