More deluxe digital gear from the folks at Trail Tech. This gauge meters your engine temp via a heat sensor on your head. Just install this washer with a wire thing underneath your sparkplug, and away you go.Engine temperatureSensor options for all standard spark plugsUser selectable display: 30-500°F or 0-260°CMeasures current and maximum temperature, resettableSpinning-arrow activity iconFlashing dot indicates 6 second sample rateSpinning-arrow activity iconPeel-n-Stick or Bolt-onSome instructions from Trail Tech:
Press button to enter setup mode. >>
Press the button to scroll through (default °F or °C.)
Release button and wait 4 seconds to continue. >>
Press the button to scroll through (default Auto, On, or Off) AUTO: Max temperature is reset each time the temperature re-rises above 130°F (54°C.) ON: Max temperature is only reset manually. OFF: Max temperature is never displayed.
Release button and wait 4 seconds to finish setup mode.