Yes I checked that web page and the links on the bottom of the page. The page is for a switch hack not a 4th stalk hack and the links are for early year Boxster
The female connector to the stalk has 6 slots for 6 pins but only 5 are used. The mating male connector you need to buy also has 6 slots but only 5 are used. On both connectors the slots are numbered 1-6. Slot 6 is not used.
As Todd said. The wire from slot 1 on the male connector goes to ground. The wires from slots 2-5 of the male connector go to the 32 slotted grey instrument cluster connector.
The info on that site is wrong. The VW wires you need for a 2001-2004 is 000 979 009. You need, of course, 5 of them.
VW has jacked up the price so shop around for the wires.