I rv wrote:
noticed you have a national tropical,I have a 2001 national tradewinds and on mine behind the compartment door which is in front of the right rear tire was a big plastic shield (wall) I removed the plastic panel and to my surprise was the back end of the fresh water tank and low and behold a riser pipe with screw in cap,just insert hose and turn on water,works great also there is quite a bit of new found storage on top of tanks for light items.Hope you are this lucky.
Hmm, never removed any of the panels. I can see the side of my water tank but not the top. I'll go remove a panel and see if it's as easy as that.