I read on the one forums that the guys took 12 amp batteries to connect the electricity, which was enough for using devices in a trail. To be honest, I don't understand electricity, and if I were you, I would contact a specialized service center. I can also recommend this blog to you outdoorlifecafe.com. Here are often published articles about travel and various life hacks for rest. I also saw an article about trailers, which may be helpful to you. In any case, many ideas will be beneficial for you as a camper owner to know about.