So I got my PUP only a month and a half ago. It does not have a battery. According to the book, it is "wired for a battery, but it is a dealer installed option". What does this mean? It has the angle iron on the hitch for a battery, but there are no terminals wired in, so obviously I'd have to do that. Can I just hook a battery to the "always hot" wire that is right alongside the brake light/turn signal/ running lights wiring? And ground to the frame? Does this camper have the inverter or converter already? (can you tell I'm not very literate when it comes to electricity?) If anyone has this trailer and can tell me where to look or give me any pointers that would be great.