Here's the full part's list to build a wiring harness, shouldn't cost more than $20 to build excluding the rocker switch, if you order the wire from VW. I never had any issue using the VW wire, I think the original description just characterized the connectors as "molex" ones for lack of a better description.
1 VW Wire (#000979010)
6ft. 20-22 Gauge wire
3 Female Quick Disconnects
1 Spade Terminal
2 Butt Connectors
1 Footwell Rocker Switch (#996.613.980.00)