Deb
"should the contacts be defaulted closed with no pressure like even when it's off and has no water pressure????,cause mine are always open,i don't see how that can work"
The contacts are defaulted open--no electrical current going through to the pump until it is called for. "no pressure" ??? There should be a minimum pressure that is consistent with the kick on pressure on the switch (it should never be 0). When the pressure drops below the kick on pressure, the contacts close and the pump kicks on and pumps until the kick off pressure is reached (usually a 20# differential from the kick on pressure). The pressure in the pressure tank, checked with all water emptied, should be 2#s lower than the kick on pressure for the pump. If your gauge is showing 0 pressure, post back and tell us more about your system--type of pump, how deep, etc.
I am not sure that I completely understood your questions correctly. A well system can be complicated and there can be various reasons for a "no water" condition that may be beyond the ability of the average Joe (or Jane) to diagnose.
Deb
The Pipewench