Well, how this is supposed to work is that a circuit is made when the ignition is turned OFF. When on, there should be no connection.
I haven't ever had to take my assembly out and look at it, but it looks like on your diagram, the line from the vacuum pump should connect to three and the line to the shutoff pod should be on one.
Try that, it should work unless there is something else messed up.
The one thing, everything that I have seen indicates that the lines should be on one and two, but something is screwy here and that doesn't work. Who knows, I might be wrong, but try this and see it it works.
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