How do you hook-up a “Renogy 100W, 12V, Monocrystalline Solar Panel ($140)” to my 2004 Grandby 4WC? I want to use this Solar Panel as a portable unit on the "ground" to charge my one auxiliary 12V battery, Laptop and 2 portable fans. Is connecting to my 2004 Grandby 4WC simply a matter of using...