You should have one line coming from the intake and connecting to the motor. My motor has two "nipples" on it and it only works with one of them connected. The other doesn't work at all. Turn you engine on, and plug that line onto the nipple, if you have more then one then try either one and see if the wiper arms move. You'll see them move from under the dash.
Those other lines must be for the washer nozzles I assume. My truck doesn't have those. Good luck!
