Universal Black Motorcycle LED Red+Blue Tachometer Speedometer Gauge 13000 RPMSpecification:100% !!!Color: BlackMaterial: IronDiameter: 67mmMounting hole diameter: 10mmPackage box size: about 90mm(L) x 90mm(W) x 90mm(H)Voltage: 12VRange: 0-13000 RPMLED Color: Blue+RedFitment: Universal for most motorcycleWiring: (2 group wire = 5 wires)Group 1 (connect lighting): Black - Negative ; Red - PositiveGroup 2: Black - Positive ; Green - Ground ; Yellow - Engine induction ignition lineNote:1. Please check the size measurement chart carefully before making payment.2. Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm)3. The color of the actual items may slightly different from the listing images due to different computer screen, thanks for your understanding.4. Instruction is not included.