1. For 12V to 99V: This electric bike throttle handlebar is applicable to various models of electric bikes, 12V to 99V universal, all can be automatically identified. 2. Wiring: The green line is throttle Hall signal line, the red line is throttle positive 5v, the black line is the negative pole, the blue line connects to the controller electric door lock out line, the yellow line line connects to the controller electric door in line power positive pole, power switch, control the whole power. 3. Premium ABS: Our bike speed grip is made of premium ABS material so that it is strong, and lightweight that will not add too much weight to your bike. 4. Practical: With this bike throttle grip, you can accurately judge the remaining power and driving mileage, and visually and accurately judge the remaining city and mileage, and indicate vehicle faults according to the voltage. 5. Note: Please be sure to control the controller's function line wiring, not simply and controller color wiring, once the wrong connection will cause damage to the controller or throttle handle.