[Csmccharlie]

Originally Posted by JRTJH

You would "pull the fitting circled in red" and connect the suction fitting/hose that is in the gallon jug of antifreeze.... Don't worry about "hooking it up wrong, if you hook your "suction fitting to the supply side of the water pump, if the fresh water tank is empty, you'll only blow bubbles into the antifreeze jug. If the fresh water tank is full (or has enough water remaining to deliver water to the pump, you'll know as soon as you turn on the pump because the antifreeze will "grow in the jug".... Anyway, attach your suction fitting to the red port. On top of the pump head, you should see a "molded arrow" pointing "INTO" the pump. The outlet side as a "molded arrow" pointing "AWAY" from the pump... The arrows aren't easy to see, especially when you're standing on your head, using a flashlight to see the pump.....

ADDED: When you get ready to pull that fitting circled in red, BE SURE YOUR FRESH WATER TANK IS EMPTY... If there is water in the tank, gravity will "flow water" all over your trailer through the tank supply hose that's connected to the fitting.

That's what I thought. Thanks!!