For FE 250 350 450 501 390-650 2004-25 TE 125 150 250 300 2011-25 FR450 TX125 Headlight Horn Kill Stop Switch This switch is designed for use with the specified models and serves as a control for the headlight, horn, and engine kill functions.It integrates into the handlebar setup and allows of electrical components including and horn activation, along with an engine stop feature for and convenience.The unit connects to the existing wiring harness and is built to match the specifications for fitment and function. This is a replacement part from a third party.All brand/model references serve only to show intended compatibility.