FWIW, I'm quite familiar with 120/240Vac and 12/24Vdc systems. When we bought our boat (originally built in 1979), I ripped out and replaced the entire AC and DC systems - new genset, all new wiring, breaker panels, house/engine/windlass batteries, wind generator, 720W of solar, 2000W sine-wave inverter, 190A engine alternator, two backup smart battery chargers - the works. Even though I design computer networks for a living, my educational background is electrical engineering. I had to remember all that AC and DC theory, and learn battery chemistry (the boat has an 800Ah house bank comprised of four L16 6V AGM forklift batteries).
I pick up the RV tomorrow, and one of the first things I'll look into is beefing up the factory DC system... Second thing will be to install a network-based media server, and probably upgrading the factory TV antenna. Baby steps...
"If it's gonna happen, it's gonna happen out there." - Captain Ron