looking down at the rear of the tank;
The left hand hose is the fuel return hose, it has a red dot or tape on it, and was connected to the liquid / vapor separator down low.
The middle hose is the Water drain hose, no tape color on it, it runs down and back alongside the coolant overflow hose, and terminates at the rear axle. It drains water that accumulates in the cap area OUTSIDE of the cap to tank seal gasket.
The right hand hose is a tank breather hose, which runs from that grommeted nipple inside the cap, down to the liquid / vapor separator. it has a blue tape/ dot.
leave the middle hose attached, and running down to the axle to drain water.
connect the left and right hand hoses with a short piece of the appropriate size hose.