Spark Plugs Engine Digital Tach Hour Meter Gauge Tachometer Motorcycle Bike FF Features: New Tach Hour Meter For Motorcycle ATV Snowmobile Boat Gas Engine Brand new and high quality. Large LCD Display Tachometer/Hour Meter. Great for Cart Engines operating in the 25,000+ RPM range. Outboads, Quads, Jetskis, Motorcycles and Dirt Bikes. Resetable to Zero Hours. For all spark ignition engines. Splash Proof. Easy Install: Wrap black wire around sparkplug wire - will work on most engines. Some engines will require hooking up the white ground wire. This hour meter reads up to 10000 hours and then resets to Zero. The tachometer reads to 99,999 RPM. Programable Maintenance hour setting with Service Icon, a reminder when to change oil or other service. Works on all spark ignition engines by selecting engine type using S1 and S2 buttons. Display: Large 3/8 inch LCD display. Reading: 9999.59 hours/minutes. Reading: 99,999 RPM. Accuracy: 1 minute or 10 RPM, Quar...