Compatible with the 3 Wired Connector : (Red, White, Brown) or (Black, Brown, Blue) A-Class W176 (2012 - 2015) B-Class W246 (2011 - 2015) DOES NOT FIT US MODELS Contents ---2 in 1 - Seat Occupancy Sensor Emulator, with Seat Belt Emulator ---Emulator Settings Instructions (Covers Multiple Seat Variations) ---Installation Instructions Installation Overview 1--Locate the faulty passenger seat sensor connector under the seat and remove the 2 connectors identified in the installation instructions. 2--Connect the Genuine KDL Emulator. 3--Using a diagnostic tool, clear any stored error codes. 4--Turn on the ignition. If the error code reappears try the next dip switch setting. 5--Once error light remains off you know for certain the seat sensor is the cause of the error.