Autometer Has Brought Together The Most Popular Gauges Into A Simple Kit. The Kit Includes A Speedometer, Water Temperature, Oil Pressure, Fuel Level, And Voltmeter. All Senders Included Where Applicable. Autometers Advanced Gps Speedometers Require No Interface With Your Vehicle Aside From Power And Ground. Their Ultra-Fast, Omnidirectional Micro Antenna Is Included For True Plug And Play Functionality And Never Requires Calibration. Configurable Rally Nav Display Shows Odometer, Trip Odometer, Time/Date, Gps Coordinates, Heading Info, Compass, And Peak Speed Recall. Quite Simply, The Easiest, Most Accurate Speedometer Available.