NiteRider has combined the previous taillights into one system that works with most 2002-2007 lighting system either 6 volt and 13.2 volt lighting systems. This is also compatible with the SlickRock system. Truly daylight visible, this taillight is the best safety accessory a commuter can add to his or her bike. Powered by the system battery using a pass-thru connector, this taillight can be operated independently of the headlights, and offer steady or pulsing light.