Axxess interface that can be used when replacing the factory radio in select BMW 2004-2013. This interface provides Navigation outputs required when installing a Navigation radio. Interface will also retain the MOST 25 amplifiers (select vehicles). This interface will also retain the steering wheel control functions for a all-in-one solution.Specifications: WARNING CA Proposition 65 Yes WARNING CA Proposition 65 Message WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov Description_DES MOST25 Radio Replacement Interface Description_EXT MOST25 Radio Replacement Interface; Description_FAB Provides Accessory Power Description_FAB Retains R.A.P. Retained Accessory Power Description_FAB Designed For Amplified Models Description_FAB Retains Audio Controls On The Steering Wheel Description_FAB Retains Phone Buttons Radio Dependent Description_FAB Retains Factory Features Date/Time/Temperature Display Description_MKT Axxess interface that can be used when replacing the factory radio in select BMW 2004-2013. This interface provides Navigation outputs required when installing a Navigation radio. Interface will also retain the MOST 25 amplifiers (select vehicles). This interface will also retain the steering wheel control functions for a all-in-one solution. Description_SHO Radio Wire Harness