Why does the water pump keep coming on?  Read the book!  Because it needs to maintain 45 pounds of pressure.  Can I plug in to the house?  Yes, if I get a pigtail that plugs into the big plug on the trailer cord and then into an extension cord - but, the extension cord has to be rated to carry the load.  Practice living in the trailer while it’s in the driveway.  Ok, this is kind of fun, camping out in my driveway.  But, it doesn’t make sense to use the propane to cook when I have a perfectly good electric stove in the house.  And neither does taking a shower in the camper….so it just sort of means I’ll heat up something in the trailer microwave and sleep in it.  Then the doubts start ~ can I really control a trailer on the highway by myself?  Can I hook it up to the truck, unhook it at a campground and hook up all the utilities?