ok, ok, since you are all clamoring for me to weigh in on this. I have the kit that comes with a length of tubing and a fitting that screws onto the kit fitting that one must put in the line. Just screw the tube on, open the valve, run the pump. Works just like Gene describes. HOWEVER, this year I realized I have the air adapter (shrader size) that screws into the exterior FW fitting. Since I have a compressor, I tried that method and it worked great. Too bad I forgot to get antifreeze for the traps. HOwever however, since I left our dvd in the RV, I have to go visit it anyway.
Don't ask about other things I forgot.
:)