How to Use: Installation Method: Three handlebar wires, the red wire for the positive pole, the black wire for the negative pole, the green for the signal wire, and the yellow one is the power positive wire. Specification: Item Type: Half Grip Throttle Material: Plastic Product Color: As Pictures Shown Thumb Throttle Diameter: Approx. 2.3cm / 0.9in Product Weight: Approx. 300g / 10.6oz Efficiency: ≥98% Hall Level: Linear Hall Working Voltage: Thumb Throttle DC 0.8V-4.2V Voltage Adaptation: Regardless of VRLA, lithium battery, and voltage, all can be automatically identified (12V, 24V, 36V, 48V, 60V, 72V electric vehicles can be used directly, and some 84V electric vehicles can also be used) 12V Electric Vehicles: The highest voltage is about 12.6V or a little higher, and the lowest is about 9V or a little higher. 24V Electric Vehicles: The highest voltage is about 29.4V, and the lowest is about 21V or slightly higher. 36V Electric Vehicles: The highest voltage is about 42V, and the lowest is about 29V or a little higher. 48V Electric Vehicles: The highest voltage is about 54.6V or 58.8V, and the lowest is about 39V or slightly higher. 60V Electric Vehicles: The highest voltage is about 72V, and the lowest is about 49V or a little higher. 72V Electric Vehicles: The highest voltage is about 84V or a little higher, and the lowest is about 60V. Voltmeters are already installed in higher voltage electric vehicles. Package List: 1 x Right Half Twist Throttle 1 x Left Full Handlebar Grip 1 x Speed Control Handle 1 x Snap Ring Note:When installing by non professionals, please pay attention to the wiring sequence and do not connect the wrong wiring, otherwise it will easily cause the Hall lines to burn.