First let me say that the RV after 2010 have both good and bad points for online help!
We get some super great interactive for finding parts here and can turn it over and around to get a great view of things:
We get drawings for plumbing here as well as the interactive:
We can get some electrical here:
But the downside is that they stopped giving the real schematic drawings that let us trace things wire by wire after the 2010 year! That leaves us doing some guessing and using a different system to ID wires and what they might do.
This chart is some help for the codes stamped on wire sides:
By htting ctrl and f, it gives us a dropdown where we can type in a search (like water pump?) and it brings a list of where that term is found in the list and we can scroll down to find what we might want like the breaker circuit! In this case it is circuit JA and shows it along with it feeding the monitor panel!
This boils down to us wanting to find the breaker for circuit JA and that leads us to the breaker panel where JA is labeled as feeding the monitor!
On a newish RV with nobody likely to have changed/added things I would not expect to find a second inline fuse but it is always worth being alert for things like that.
Also keep in mind that there are likely to be more than one switch and any of those other parts and wiring may also need checked.
Best of luck with the new RV. Often lots of new to figure out!