1st post and it's a DIY. Sometimes we get dense fog around where I live so I was interested in utilizing the rear fog lamps for foggy mornings, but didn't want to pat $100+ for the euro switch. I searched on the 3'ers forums and found a way to activate the switch by using the one you already have, plus something almost everyone will have lying around the house. I used Lego and it worked really well. This was a very easy mod that I was able to do in about 20 minutes.
I used steps 1-3 to gain access to the switch
http://burgertuning.com/instructions...ge_install.pdf
This to open the switch
http://www.e90post.com/forums/showthread.php?t=51749
And I made something like this. I used Lego as well. I had to trim the 2 width piece and I used 3 square tall pieces with the nipple on the last cut off.
http://www.e90post.com/forums/showthread.php?t=95434
I take no responsibility for anything that may happen to your car! Do this at your own risk.