RainHurry-
In the past, Ford has not supplied a 12V charge line on the F53 chassis. I can't tell you why. They usually provide one for the E-Series chassis used by Class C coach manufacturers.
Ford wiring diagrams are the best place to confirm the existence of a charge line. I can't afford to buy the DVDs, so I turn to the next-best place: The Ford Body Builders Layout Book,
online. For a 2016 F53, the fuse information can be found
here.
Looking at that information, I can't see a charge line fuse. Therefore, I assume Ford did what is has in past years, which is that they left it to the coach builder to provide one. I could be incorrect.
If Newmar provided a charge line, its fuse should be listed in your owners manual. That's where I find it listed for my Monaco.
I strongly suspect there
is a Newmar-installed charge line in your BayStar. Even if you've had a separate wire run, it would help other folks reading these posts to investigate further and find a charge line, if it's there.