I have a Coleman camper and there is plug-in kind of light like this. I am not first owner so no clue it is come with the trailer or was bought after market. https://colemanpopupparts.com/products/fan-light-combo The above link is a fan-light unit, but mine is light only, and with a clip kind of thing I assume it is attached to the awning bar or tent bar. It does have the same plug in connector that looks identical to audio output of electronic piano. where is plug supposed to plug into, my camper is Coleman Cheyenne 98, and I don't see the socket to accept it, there is a picture in the link showing how the socket looks like, but I can't find it in my trailer. Do I have to buy the socket and wire it up somewhere? Why coleman use this kind of unique socket, what is the benefit for it?