Iztor Motorcycle Scooter 13000RPM Analog Tachometer Gauge with Night Light 0-13000RPM Measurement Internal Night light, red and blue cables for light, DC 12V Material: Stainless Steel,Black line lock positive electrode,Green line lock negative electrode,Yellow line contacts signal Diameter: approx. 65mm ,Height: approx.55mm Easy to install & long lasting ,For All Motorcycle