ITEM NAME:2 inch 52mm Car Motorcycle Fuel Level Meter 12V 8LED Oil Fuel Gauge Universal Product Description Description: 2 inch 52mm Car Motorcycle Round Fuel Level Meter 12V 8LED Display System Ratio Engine Oil Fuel Gauge Instrument Universal Features: 1. 8 blue or green LEDs show the fuel quantity of the fuel tank (the number of gasoline is judged according to the number of displays). 2. A yellow LED indicates that gasoline is not much. 3. A red LED indicates that the gasoline is nearly used up. 4. The oil gauge has a delay function circuit, which will not cause the LED display to flicker because the fuel tank is shaking during driving. 5. The blue LED can be clearly displayed under the strong sun. Specifications: Model: B3049 Voltage: 12V LED display: Blue, Green, Yellow, Red Instrument diameter: 52mm/2.05" Height: 25mm/0.98" Product application: Car/Motorcycle Wiring method: Black wire link to positive electrode, green wire link to negative electrode, yellow wire link to sensor (oil pot) signal input Notice: The signal line must be pulled directly from the oil float. The line linked instrument must be cut off. Otherwise, the oil meter is absolutely inaccurate. Note: Green means the LED shown has a red color/a yellow color/eight green color. Blue means that LDE shown has a red color/a yellow color/eight blue color. Included: 1 X Fuel Gauge.A yellow LED indicates that gasoline is not much. A red LED indicates that the gasoline is nearly used up. Notice: The signal line must be pulled directly from the oil float. The oil gauge has a delay function circuit, which will not cause the LED display to flicker because the fuel tank is shaking during driving.