That's the kit everyone uses. But it is a VW part and is available, sometimes cheaper, elsewhere on the net. I'm not sure what you mean by "an inexpensive way to get it to work", You need the light assembly, AND the switch to have the rear fog. The switch you bought also has a position for the front fog only (parking lights on, headlights off), and the ability to add in the rear fog to the mix, or turn it on all by itself (required for street parking at night in some Eurpopean countires). The thread covers all that if you'd read through it, and the indicator light in the instrument cluster was only on one (or a couple) years. The OEM switch has the rear fog icon light up, that is what we were talking about earlier. I snagged my rear rear fog light assembly from someone on here who was selling one they had either not installed or removed before a sale, I don't remember. Installation includes running a lone single wire from the switch to the rear location, it is not a plug and play.
M.