Just took off Skene LED flicking/flashing brake lights from my K1200LT which is for sale, and reinstalled them on my wife's C400X. They are fantastic. They pulstate/flicker normally, but when brakes applied, they flash even more brightly 4 times fast then 4 times slower. Super bright. Too bad I can't post a video of them, and I tried posting a photo but this "Attach files" function is saying the photo is too big. Sorry. But you can find a video on FaceBook in the group, "BMW C400X and C400GT Owners Group. .