The big mysteries we find when we get an RV that somebody else may have changed a few things!
I failed to spot any backup camera info on the Winnebago drawings. that may/may not be a big clue, but it does seems to show the camera was added at some point. Second clue seems to be that original wiring added by Winn is expected to have wire codes stamped on the wire to et us ID them.
when and how sure we can be is a bit of the mystery!
So we have to try to figure what is there and what you need to do to get them to match a new camera.
I fully admit that I'm not a video guy at all. That would make me want to take the RV to a video shop who installs cameras.
But maybe we can get some info dug out?
About the only wire I can ID is the white one. Since it goes to a bare metal plate, that makes it a ground wire!
Do you have drawings/instructions for the new camera and does it need four wires like the old one?
If I were doing this, I would first try to get info on the existing camera if there are labels on it. Then try to match the old and new wiring. Not the best way to go!
But there may be far better trained folks come along shortly with much better info than what I suggest.