NXMX5: I see that the backup lights appear to now be red - must be the fog lamps? So what happens to the backup lights? Is a one sided deal - fog on the left & backup on the right?

It would seem to me that the existing switch would work but instead the wiring would be the problem.

Also what is your European source? I just bought an official XF first aid kit from a man in the UK. I would be interested in other items.