ITEM NAME:Electric Scooter Finger Thumb Switch with Led Display for Electric Bike 36V E2L8 Electric Scooter Finger Thumb Switch with Led Display for Electric Bike 36V E2L8 Features: 1:Suitable for all of Lithium battery, LiFePo4 battery and Lead acid battery. 2:Battery 12V-84V automatically Identify, Throttle DC 0.8-4.2V 3:Digital voltage display, intuitive and accurate judgment of remaining capacity, mileage. 4:Can indicate vehicle error according to voltage Color: photo color Material: Plastic Length: 2M Work Voltage: DC 0.8V-42.V Fit for 22mm diameter Handlebar Thumb throttle with blue color LCD display and power switch. Green is for throttle hall signal, red wire is for throttle +5v, black is negative wire; please connect according to controller function wire, You can not just match same color wire, if wrong connected that will damage your controller and throttle. 4 wires : yellow is for voltage display wire, connect with electric bike power positive. 5 wires: blue wire connect with controller power lock output wire, yellow wire connected with controller electric switch input wire power positive, 6 wires yellow connected with power positive, blue wire and white is is function wire(can work as reverse switch, horn switch, cruise switch, power lock and so on) 7 wires: yellow connected with power positive, blue is share wire, middle gear for 3 gears , white is high gear, brown is low gear. The above is common wiring way, if need made to order please connect with salesperson. Package Contents: 1 x Thumb Throttle with Power Switch