If I read the stuff on the Hella site correctly, these lights come on with the ignition and then turn OFF when you turn to dipped beam....
Be interesting to see if it works ok with the canbus system if you've got the "auto lights on" feature on your MKV...
However, I can't see the point myself. If you need to be seen, then why not turn your lights on??
You could retrofit any type of fog light in the space for them on the MKV and indeed Hella and others do many sorts that would look great. If I were doing that though, I would also get the new light switch for inside the car and wire it up to that to keep it OEM looking. The wiring should be simple enough to run in...Aren't the OEM fogs about ?50 a side? Give VAG Parts a ring or something.
In either case, it looks like you would also need two grille vents with the cutout for the fogs, unless they're included with the kit, and you might need other bits for mounting. The grille vents I know from a collision with a pheasant (very tasty!) are about ?15 each.
Also, as others have mentioned, I think you'd get flashed by other road users and pulled over by the feds quite frequently if you had these on! It might get tiresome trying to explain to a copper what "daytime running lights" are, and you might still be asked to produce all your docs whilst they check on construction and use regulations!
Just my 2p...
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