Is there an overall Manual??

We just bought an 09 3914 and of course received booklets but they don't have general information on the unit itself. For example, in the bedroom there is a cupboard that has TV hookups, antenna, and an outlet what is this for because there is also tv hookups next to the security camera on the wall. The one in the cupboard you would never use for a tv because you wouldn't be able to see it. Also, we were wanting to read a little more on the dump hose because in our walk thru what the guy told us something that didn't seem right. This is our 4th unit so we pretty much have things down.

Basically we just want a book that covers everything on the unit of what it is and what it's for. When we had our walk thru they really couldn't answer our questions and they didn't do a good job going thru it because they said they didn't know much about it. How can I get a book??
 
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