I just purchased a vintage (1995) Jayco pop up, and am trying my best to figure it out. The manual is as ancient as the trailer (!), and not particularly helpful. I see the water hookup fitting on the outside, but it seems to go nowhere?? I think the original owners may have taken the tank out?? I believe it should be inside the trailer, under the galley, but not 100% sure. Also, the propane fridge was taken out, and a little electric/standard dorm fridge put in. I don't think that's going to be very useful, as I expect most of my camping will be without hookups. Am I able to run it efficiently enough with battery power, (I know, not likely!), or should I look for a replacement propane unit? If so, what are good resources for these items on older trailers? Thanks so very much in advance-- these are probably very simple questions for the experienced owner. Which is why I'm asking!!