Specification:Material: Aluminum AlloyNumbers of LED: 10 leds (8 pcs green，1 pc yellow，1 pc red)LED Color: Green， Yellow and Red8 Green LED display FuelWhen Green LED not lighting， Yellow LED means only few FuelRed LED Lighting all the working time(except car/motor stop work)Quantity: 1 pcGauge Diameter: 2"/52mmApplication for Car and MotorWire length: 38cmPackage size: 6.5x6.5x7cm(LxWxH) Wiring:1. Black +12V connect Power Positive2. Green -12V connect Power Negative3. Yellow Wire connect Oil can Sensor(must not connect with the original test wire， or this Fuel Gauge is inaccuracy) Note:1. Please check the size measurement chart carefully before making payment.2. Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm)3. The color of the actual items may slightly different from the listing images due to different computer screen， thanks for your understanding.4. Instruction is not included.Package includes:1 x Fuel Level Meter Gauge