So, I managed to get about 1/2 the wire pushed back into the wall. At that point it got tough so I stopped. with 1/2 the wire, I'm able to get the camera on without pushing and shoving to get the screws in. I have a '20 Geo Pro with the "solid" walls. I assume the hole they cut in the foam is preventing me from fitting all the wire back in there.
BUT, as I put it back, what I feared would happen, happened. The microscopic bottom screws no longer had any bite; were stripped. I put a few dabs of goop in the screw holes which, once dry should hold it firm, I hope.
. I could get some bigger screws and self-tap that back into the wall - but, I'll hold off on that until I have an issue. I will be keeping a close eye on it at each stop to make sure it's staying firm and I don't lose it. Although, the display in the cab would go wild if it suddenly fell off and dangled from the wire.