Help with Humbucker wiring?

I'm about to heat up the old soldering iron to wire up my old Hagstrom
Swede. I've got most of what I want to do figured out, except . . .

I found a diagram on the web for wiring a single humbucker with a 3-way (on-on-on) switch that claims to put the individual coils in series, parallel, and, in the center position, single coil only. The series and parallel parts look fine to me, but I can't for the life of me figure out how the center position works.

I've put up the diagrams at my website:
http://www.exotic-scales.com/help!.htm

If anyone can explain that center position to me, I'd be much obliged.

There's a similar schematic at the Bartolini website:
http://www.bartolini.net/instructions/pickups/passive/ switching/Switch_Wiring_DualCoil_Pickups4_cond.pdf

I'd rather look at a real schematic, than the drawings that you provide. In your drawing, the normal wiring would be ground to the left bottom coil, right bottom connected to right top, and output from the left top.

On your bottom diagram, if the switch is in the right position, you are providing a ground path to the normal junction between the two series pickups. That's how it works.