Originally Posted by RonMaiden
I doubt it has a sensor and I'm hoping a few others that have added the wing will chime is with a similar experience or not. I'm hoping not.
There were at least two people with this issue in this very discussion, the O.P. with the 3D carbon wing and the stock third brake lamp was complaining about the wiper/ washer no longer working properly in pretty much the same manner. Misfire had also installed the clear ST lamp and seems to be happy with it.
There may be a non clear version with the corrected nozzle angle/ location which would should be part 8A6Z-13A613-B if you're looking to maintain the red appearance.
The clear part is available under service part number 8A6Z-13A613-C.
The stock part is 8A6Z-13A613-A at least as far as I can tell.