Features: 1The use of stepper motor drive pointer, accurately display engine speed, with high repeatability and versatility, drive and control is relatively simple and so on. 2Speed odometer is equipped with the LCD display clear display mileage, effectively increase your driving safety. 3Suitable for all kinds of vehicle modification, can be used for the engines/generating units, ships, construction machinery, agricultural machinery, automotive modification, etc. 4There is a snap together with the harness connector to get best and firmly connected, in order that the gauges could work even in strong viberation. Without stationary drift and total mileage is adjustable. 5Equipped with curved glass with anti?fog function. With ultra?wide working voltage design, long?term operating voltage is 9?32V, maximum up to 36V ( 1 min). 6With instructions of high precision, stepper motors used for full range of stepping gauges, great feature with less power consumption, longer life and so on. 7316L stainless steel for long?term use even in acid?base and humid environment. IP67 waterproof and dustproof grade make the gauge more reliability and stability. 8Without mechanic sensor and get speed signal from GPS with GPS blind area odometer compensation function, and show accurate speed in tunnel with the help of accelerometer. Item Type: Speedometer Material: 316L Stainless Steel Bezel Anti-Fog Glass OverSpeed Buzzer Alarm: Value Adjustable Indication Light: Left, Right and High Beam Install Diameter: Approx. 85mm/3.3in Indication Range: 0-200KM/H, 0-8000RPM Mileage Range: 0-99999.9KM Input Signal: GPS Antenna Backlight Color: Red Operating Voltage9-32VDC Operating Current: 60mA Operating Temperature: -30 to 75 Storage Temperature:-40 to 85 Waterproof: IP67, back cover is IP5 Application: For motorcycles/ships/trucks/buses/automobiles Installation: 1. Open a hole with a diameter of 85mm on the cabin panel and instrument panel, insert the instrument into the hole, the panel corresponding to the instrument panel is marked with a boss, and make a small notch at this position to ensure that it is on the back of the instrument At least 85mm instrument panel. 2. After installing the instrument into the panel, screw it down with a fixing ring (not included). 3. Connect the wires, and the instrument shell is directly connected to the 12/24v power supply. 4. Insert the wire harness and fix it firmly on the table. How to Use: Fix the meter on the dashboard and connect the power cord. Wiring Instruction: The red wire to the positive The black wire to the negative The white wire to the right turn signal The yellow wire to left turn signal The purple wire to the headlights The orange wire to the backlight The gray wire to the rotate speed The green wire to the speed 1 x Speedometer 1 x Power Harness&nbsp 1 x Instruction Manual