Description: Aftermarket LED backlight motorcycle tachometer. Lightweight & portable circle design,high capacity black face. Internal night light,full-sweep red illuminated index. Allow to read the real-time speed clearly. General mechanical speed line interface. Specification: Measurement: 0~13,000RPM Input Voltage: DC 12V Size: approx 60mm (2-3/8")*56mm (2-3/16") 58mm(2.3") mirror diameter,68mm(2.7") outer diameter Universal fits most motorcycle models(Please check the size before you purchase) Wire Connection:Long red- positive, Long Black- Negative,Short Green- Ground,Short Yellow/Black-Engine Signal,Short Black- power/ignition lock positive Package Includes: 1x LED backlight motorcycle tachometer