This one is for a 3-way switch, keeping it real simple and just giving you the 3 most useful positions. You could also use this wiring with a 5-way; the 2 position would be bridge and neck in parallel and the 4 position would be another neck position.
![Image](http://farm4.static.flickr.com/3230/3465258632_0b4c7c55fd_o.gif)
This one is for a 4-way switch. It gives you all the options I think most people would want. Unless you're a bridge humbucker kinda guy in which case you would have to switch it around, wiring the neck like the bridge and the bridge like the neck.
![Image](http://farm4.static.flickr.com/3624/3465082682_28e6691457_o.gif)
Another 4-way switch option that makes the strat work more like a 2 humbucker guitar at the two outer positions and 2 single coils in the center positions.
![Image](http://farm4.static.flickr.com/3479/3465288354_987d05c744_o.gif)