["Description Working voltage: DC12V Resistance: 8-566ohms connect cable: Black: + 12V positive Green: -12V negative Yellow: sensor singnal input LED display :one Red ,one Yellow ,eight blue Dimensions: 48x28x19mm(LxWxH) Cutting Size: 46×26mm this meter have adjustable potentiometer , it can not the same for time use with original car oils scale Fill Up the for Tanks, adjust the potentiometer until led meter all bright , and until do nofor t have any oil in for tanks adjust the meter led all crushing out . Red lights is power supply Indicator light ,the yellow Turn off mean no oil , 5-6 is bright together the other onebyone bright Must cooperate with oil sensor (float).Cannot be used together with the oil scale. Package include : 1pc 12V UnversalMotorcycle Car Oils scale meter LED Oil Fuels level Gauge Indicator"]