52mm Air Fuel Ratio Gauge LED Digital Display With Narrowband O2 Oxygen Sensor Car Gauge for 12V Car 0258006028 Racing GaugeAttention: the sensor is Narrrowband Oxygen Sensor and it should be working on 0-1V , please check your car whether fit for it or not before making order thanks Oxygen Sensor Specification:OEM:0258006028 Working Voltage: DC12V Signal Line Voltage: 0-1V Spiral: M18*1.5 Use Wrench: 22mm Output Voltage: Maximum value 900mv/ minimum value 50mv. Response time: (600mV-300mV) 100ms. Response time: (300mV -600mV) 100ms. Starting time: 10s Heating resistance: 8.5~9.5 Internal resistance: 200~300 fit For Geely Emgrand CITROEN FIAT PEUGEOTConnection:The white line is at heater ab Black line signal line C, gray line signal ground D The green wire of the instrument is connected with the black wire of the sensor. The gray line is connected to the negative pole of the battery. One white wire connect with the car shell or battery negative pole. Another white wire connect to the ACC line of ignition switch The white line is the heater and does not distinguish between positive and negative electrodes About the air fuel gauge, please see the installation instructions.Attention: If you need the sensor and the gauge , please choose the item of sensor and gauge together.Package:1* Air Fuel AFR Gauge Or 1* Narrowband Oxygen Sensor 1* English Manual(Only teach how to install the gauge,but do not teach how to install the O2 sensor,thanks)Note:1.Highly Recommended professional installation,do not teach you how to connect the O2 Oxygen sensor. 2.This kit is not a universal kit, please confirm whether this oxygen sensor is suitable for your car before buying, thank you Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store