This is a good point and not yet covered. Whether your monitor needs an iso transformer or not is totally dependent upon what you choose to put in there for a monitor, so it'd be situational. But the AC stuff isn't touched on in the thread.as well as any other power related items: fuse(s), ac line filter, ac distribution.
@hursit what is in the cab as far as AC wiring? Can you show us a picture of yours and what is included?