What is what appears to be electrical conductive tape beneath the "water-proof cap" inside the Ultegra 6600 STI assembly? While performing some work on my Ultegra 6600 STI shifters I was curious to remove part no. 13, designated "water-proof cap" in Shimano's part fiche. To my surprise there was something that resembled conductive tape beneath it with (I think) 3 terminating metal pads. I didn't take a pic, unfortunately. Does anyone have any idea what that's for?
Flight Deck was a system where information on gear selection and cadence can be sent to a head unit to display to the rider, and combined with the wheel diameter, also speed. So electrical contacts to connect up to this. A bit superseded by GPS units now.