Thanks to you both for the advice...I literally stopped my project to try and come up with a clean functional plan for the power. May should have figured this out first, but y'all know how it goes when you get new stuff for the RV...gotta get it installed! Right now everything is wired to a jumper box sitting in the floor between the seats...works great! LOL
Thank goodness our big adventure doesn't start for another couple of weeks!