Taillight / Brake Light HIGHSIDER Mono Bullet LED Taillight with a power LED and clear glass, embedded in a metal housing, E-approved. The HIGHSIDER taillight and taillight/indicator series are safe to see, giving you the safety you need and the look you want, whether cruiser, scooter or speedster. Measures: diameter: 18 mmdepth: 63 mm width, stem: 13 mm attachment: Threaded bolt M8 x 1.25 mm length: 19 mm Connections:Black cable = Ground (-)Yellow cable= Rear light (+)Red cable = Brake light (+) Scope of supply: 1 piece, housing color selectable.