If you are looking for a great wideband gauge to monitor your air/fuel ratio in your vehicle then Auto Meter has you covered. Their Phantom series gauges feature black trim rings and white faces and have softglow lighting, along with the included red and green light bulb covers so you can personalize the look of your gauge. Specifications: Includes 8 ft. tubing or wiring harness. LED digital display. 0-4v data output feed for ECU, data acquisition unit, or Laptop tuning Auto-Dimming gauge brightness feature Includes high-quality Bosch wideband O2 sensor Display data in Lambda or numerical A/F ratio User programmable range Peak recall/memory 10:1 to 20:1 AFR Range for Gasoline Applications Adjustable for Alternate Fuel Types (Ethanol, Methanol, Propane, CNG) 6:1 to 18:1 AFR Range for Alternate Fuel Types User Programmable Warning Function This product has no provision for dial illumination/backlighting. Application: Universal