Questions about Chalet and Aliner folding campers

Thanks everyone for your suggestions. I looked at a Aliner ranger 15 today. the sales guy told me that the Chalets have wires hanging down underneath... is this true?

i just cant imagine that.

Also.... you Chalet owners..... does your heating and air conditioning units work well to warm or cool the trailer ?
i was again told they were not placed well.

thanks