This 8k RPM gauge from KOSO will connect to the vehicle’s own 12 volt supply.
The RPM signal is taken from the negative side of the coil – or you can wrap it around the HT lead to the spark plug. It also features:
Choice of black or chromed bezel
Black metal case or chromed case
Motorcycle mounting bracket 7/8th (22mm) and 1″ (25mm) handlebars
80mm Diameter casing
White back light