General description Universal fits most motorcycle models. This replacement LED backlit motorcycle tachometer features a circular design and a high-capacity black face with an internal night light. The scanning red index allows for clear reading of real-time speed. Technical specifications Measurement range: 0 ~ 13,000 RPM Input voltage: DC 12V Color: black Material: iron Size: 9.5 x 9.5 x 9.5 cm Measurement allowed error: +/- 1-3 cm Compatibility and accessories Connection interface: Long red - positive Long black - negative Short green - ground Short yellow/black - engine signal Short black - power/ignition lock positive