A small bit that "might" help?
On this drawing:
We get the location of the breakers but if we look further to find the backside view, we can get Winnebago wire ID that they use on drawings and stamp on wires. That can tell us the "from" and "to" of that specific wire and may help to know if it carries battery or ground, at times.
Key to getting correct info when looing at back where ID is shown is to keep in mind we turned the panel around! What was to left is now top right when looking at back!
The two circuits here are both power as they are on the buss bar! If looing at the switch and NOT finding power, look for the ID at the end of a long string of letters/numbers for 2-3 letters like CCY, JJG, etc.!
this is the decoder list for that ID:
We get this for those two wire/circuit ID:
Looks like power comes from breaker on wire JJG to switch? Does that seem to show on the wire labeled JJG at switch?
Then CCY tells us this:
Not sure I understand that second one but seems to be about all the info we get here?
Maybe some things to chase on how power may get to things but they have stopped posting lots of the good info we need to chase 12VDC power on our RV. UGH!
That leaves us guessing way too much!
Best guess I have is that power comes to CCY from a chassis elctrical box? But that is a different box than I spot here, so perhaps looking for a box of chassis breakers at a different location?