Peg,
You have only a black water tank.
Get a 25' and a 50' freshwater hose, also get 2, 10' lengths of sewer
hose and a coupler. You should have a 25' cord on the trailer, have a
50' extension cord on hand. It's only rarely that you'll need the extra
lengths of hose and cord, but you WILL need them one day.
<<Jim>>