TMS Digital Hour Meter Tachometer Tach Tacho for Yamaha KTM Honda Kawasaki BMW Motorcycle Dirt Bike ATV UTV Quad Generator MX Snowmobile Boat Outboard Jet Ski 4 2 Stroke Gas Engine Applications for all 2-Stroke or 4-Stroke gas powered engines It will show both engine RPM and hours of operation,Read up to 99,999 RPM Easy to install, instructions & user manual included,Programmable maintenance interval setting Replaceable internal battery rated for 35,000 hour of operation Can reset total hours and maintenance time,Wrap first wire around your spark plug cable, connect second wire anywhere on the engine or frame