Wiring for my 12-2007 build E90 M3 was different.
I tried to re-wire as shown earlier in this thread and that didn't work right for me, the wrong lights were lighting up. (rear fog instead of reverse, reverse instead of park). So the wiring must not be the same for all cars.
Busted out my tester, and this is what made everything work correctly for me:
Coding after that was easy and error free.