stop light's
 

hay people...
I have just seen a aprilia rs with what seems to be a stop light that strobs (light moves around when brake light not on) but lights up as normal when brakes used, this looks very cool any info please, happy christmas and wicked new year

I have seen rotating LEDs bulbs in the auto parts stores that sound like what you saw. You may want to check at your local parts store to see what they carry.

Yea they are everywhere. I have two in my rear bulb socket. Easy to fin, forget the manufacturer