Toolpants and I have been around and around on this one, but you may discover that your boxster's rear fog light (that second pull on the lamp switch) only illuminates one side...which is how it is supposed to be according to him... it's how the Germans do it.
Evidently, this keeps people behind you from thinking you're braking.
The reason I kept bugging Toolpants about this was because they both illuminate on my boxster, which to me seems far better looking as is evident from your hard work on your boxster as well! I'm told that some owner before me wired it up by running a wire from the driver's side over to the passenger side. I have yet to dig under my carpet to see if that's truly the case.
Hope this helps. You can always run a wire from one side to the other if this is the case and get them both to illuminate. Frankly, I like it because when I've got a tailgater, I just pull that switch to the second position and they have no idea I am not braking and they back off.
