I was looking at some solar panels today that come in rolls. They all included cigarette lighter plug-ins and very little in the way of instruction. Apparently I ordered the "solar connection" when I ordered the camper. I did find an odd little three-prong plug and the socket on the trailer where it would fit. Does that mean I need to buy a controller, or is that what the "connection" is? Can I simply buy a solar panel and attach the plug and call it good? I like that idea. The Camp-Inn website is completely shut down or I'd have asked there first.