The Vision X Anti-Flicker for Canbus Systems adapter was specially designed to accompany the VX Series LED Headlight, preventing 'flickering' in the fixture by leveling the electrical current to and from the headlight and to the vehicle's Canbus system. Removes Electrical Interference that Causes Flickering Simple Plug and Play Adapter Item #: P-HLCBAH13 Specifications Adaptor Type H13 - H4 Function Anti-Flicker Adaptor Input Voltage 12V DC