ITEM NAME:DC 12V 52mm Fuel Gauge Level Sensor Lightweight For Car Motorcycle LED Display Description: 8 Blue/Green LED display Fuel 1 yellow LED means that the gas is few, and 1 red LED means the petrol is almost running out This oil meter has a delay function circuit that does not cause flickering of the LED display because the tank is sloshing during driving. Blue LED can be clearly shown in strong sunlight Item type: LED Fuel Gauge Material: iron plating Shell Color: Black Size: Diameter 52 mm, Depth 28 mm LED Display: Red (1), Yellow (1), Blue (8) Connection Instructions: Black wire connects to the positive supply (+ 12V) supply. Green Wire connect to earth. Yellow wire connects to the sensor. (not included) This Gauge includes a small adjustable resistor to allow you to calibrate it to your Fuel Depth Sender. &;nbsp; Notes: This product requires a fuel sensor to supply it with the fuel depth. This product is NOT waterproof. Package Includes: 1 x LED Fuel Gauge Notes:&;nbsp; 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!&;nbsp; 2. Please allow 1-3cm measuring deviation due to manual measurement..Item type: LED Fuel Gauge. 1 x LED Fuel Gauge. 8 Blue/Green LED display Fuel. LED Display: Red (1), Yellow (1), Blue (8). Yellow wire connects to the sensor. (not included). Blue LED can be clearly shown in strong sunlight.