That's got two poles. You only need one. Connect the pickups to 1, 2, and 3 then the ouput is at the corresponding 0. The switch will automatically short the proper terminals in positions 2 and 5. I just pulled a very similar switch out of a Yamaha. Of course, it's always better to beep it out yourself than take my word for it.
What about the two wires that go to each Tone control? Like you see on regular Fender strat wiring.
Thanks