Features1Connecting Wire: The green wire is the signal wire of the turning handle, the red wire is the positive 5V of the turning handle, the black wire is the negative wire, the blue wire is connected to the outgoing wire of the controller switch, and the yellow wire is connected to the positive terminal of the incoming power supply of the controller switch. 2Scope of Application: The throttle handle grip can be automatically identified and displayed in real time regardless of the various models of electric bikes (12V to 99V universal). 3Real Time Display: The real time digital voltage display, intuitive and convenient, can accurately judge the remaining power and mileage. 4Wide Range of Applications: Handlebar throttle twist grips are suitable for lithium batteries, water batteries, dry batteries. 5ABS Material: Throttle handle grip is made of ABS material, fine workmanship makes the products durable, not easy to damage. 6Warm Tip: Please be sure to follow the instructions for wiring, do not randomly wiring, but a wrong connection will damage the throttle twist grip.SpecificationItem Type:ThrottleTwistGripMaterial: ABSInterface: SM InterfaceColor: As Pictures ShownWeight: Approx. 346g / 12.2ozPackage List2 x ThrottleTwistGrip2 x Key1 x Manual