How to Use: Installation method: 3 twist grip wires, red to the positive pole, black to the negative pole, green to the signal wire, separate yellow is the positive pole of the power supply, Specification: Item Type: Bike Throttle Grips Material: Plastic Color: Black Application: for Electric Bike Gross Weight: Approx. 342 g/12.1 oz Package List: 1 x Right Half Grip 1 x Left Full Grip 1 x Governor Handle 2 x Clamp Ring 2 x Key Note: Please wiring while checking controller functional cable, can not simply connect controller wires by colors, the wrong connection will cause damage to the controller or handle.