Handlebar switch with 2 buttons, one for headlight, one for horn. Fits over a 7/8" handlebar. Horn button is momentary (its only on when you are pressing it) and headlight button is latching (Press once to turn on, press again to turn off. We see a lot of people using this switch on small scooters, although its really good for any vehicle. Here at wild we love these switches, we even put one on our forklift for the horn and lights!If switching loads over 1 amp such as high power lights - use a relay and have the switch turn the relay on and off.Wiring--------------------------------Horn: Blue and Green WiresHeadlight: Red and Yellow Wires