I just did this job on my new 2006 Cayenne S. Thanks for the instructions. I got the parts from Sunset Imports in Oregon. Total cost with shipping was only $40. A couple points I'd like to add:
1) On my '06, the 5 wheel well torx were size 25, and the 2 torx screws holding the actual marker were something bigger, probably a 27. The 25 driver got the job done, though.
2) The new clear markers have a different bulb placement than the amber markers. See picture. The amber markers had the bulb centered on the outside facing lense (empty hole in picture) whereas the clear markers have the bulb directed at the wheel well lense (where I put the black cap in the photo.) This makes the clear markers much less bright IMO, but still adequate it seems.
3) Putting everything back together was a breeze, but there seemed to be a bigger gap between the wheel well cover and the lense than there was before I did the project. See picture.
Everything is in its place, but I'm concerned about this gap. Can anyone comment on this?