Fixes Unstable Tachometer Readings – Designed for Gasoline engines and trucks, the tachometer adapter stabilizes erratic RPM gauge readings, ensuring accurate and reliable tachometer performance Tachometer Senses Adapter current on the coil positive wire and converts it to a readable pulse output for Gasoline engines of Tachometer/RPM Gauge Find the Ignition Coil of your Gasoline Engine, normally it’s close to Spark Plug, which can be easily found from your engine/car/vehicle user guide.Wrap the input signal cable 5-8 round across the ignition coil cable Please set your Tachometer/RPM Gauge tach RPM ratio to 4 pulses/round, then the Gauge will work properly Easy installation，RED: Power Supply 12V DC，BLACK: Power GND，YELLOW: Output Signal (fixed 4pulses/round rpm ratio), WHITE: Switch Control Cable. Outside diameter: 2.56", inside diameter: 1.57", thick : 0.08" Name:Tach Adapter
Item Weight : 1kg
Item Width : 11cm
Type : Speed Sensor
Car Make : All
Waterproof grade : IP67 Waterproof
Cable Length : 1.6 meter
Output TACH ratio : 4pulses/round
Power supply : 9~36V DC
Engine Type : Gasoline Engine