................and only the offside rear foglight works, as standard.
Opens a whole can of worms as to why - supposed to be to stop confusion between foglights on and stoplights on - but that's how it is from the factory. Not sure how much of the kit is there to make the nearside function. On Mk 4s the bulb holder was there, so you needed a wire from the offside and a bulb fitting.
For me, the more red light showing in fog the better, but I've not done anything about fixing this on my Mk 7's.