my first guess would be that it's a load sensor, not for the wing, but for just the endplate. but i dont know why there would be all that extra wire that had to be bundled and taped to the wing. and the little box?
maybe it's something to allow one to adjust the front wing angle in remotely? just for free practice, of course.
i'm aware it doesnt connect to the adjustable wing elements, just thinking out loud, really.