ELING Universal MPH GPS Speedometer Odometer 160MPH For Car Motorcycle Tractor Truck With Backlight 85mm 12V/24V

Open a 85mm dimension and 70mm depth hole, put gauge into It and fasten Hook up easily, 3 wires connection(power, ground, lighting). This is complete unit, can work directly with gps sensor together, not need other sensor cables. It takes about 30 seconds to get signal in the first time, but less than 3 seconds after that. It gets quicker under a clear view of the sky. Sometimes if signal is missing, pls. reconnect all wires and restart it. It shows current speed and odometer(cannot be reset), no trip meter. Red Backlight, 12VDC/24VDC Working Voltage, 100% waterproof and anti-fogging protection