This is a Nicestuff 68036 (also known as the EZ036 or NSD-68036 or KRAM ) handsfree integration harness for use with select BMW and Mini vehicles. Some of the compatible vehicles include; 2004-* BMW 1-series 2002-2005 BMW E46 3-series with Philips or Alpine Business RDS 2002-2005 BMW E46 3-series with Becker Business CD 2002-2005 BMW E46 3-series with Navigation (also requires EX899 extension cable) 2002-2005 BMW E46 3-series with Professional Alpine 2002-2005 BMW E46 3-series with Harmon Kardon 2006-* BMW E90 3-series with Professional Alpine 2001-2003 BMW E39 5-series with Philips or Alpine Business RDS 2004-* BMW E60 5-series except Logic 7, all Becker except Logic 7 2004-* BMW 6-series except Logic 7 2004-* BMW X3 2001 BMW X5 without navigation 2002-2006 BMW X5 2007-* BMW X5 base audio, without navigation 2007-* BMW X5 base audio with Navigation (also requires EX899 extension cable) 2008-* BMW X6 base audio, without navigation 2008-* BMW X6 base audio with Navigation (also requires EX899 extension cable) 2003-2009 BMW Z4 2000-2003 BMW Z8 / Alpina and some early 2000s Land Rover * indicates it should be compatible through that generation of the vehicle platform On activation of the Mute line, the audio will switchover to the handsfree kit. You can also use this harness to integrate audio into your car stereo from other mono sources by triggering the mute enable line (navigation units, radar detectors, CB radios, etc.). A carkit-specific adapter harness may be required for your installation (I have some of these in my booth), or the connections can be made individually. Available on the connection to the carkit is: VBATT - constant +12V power supply Ground - chassis ground Ignition - switched +12V signal Mute - active-low trigger Mute connection Speaker (+) - differential mono audio signal from the carkit or device Speaker (-) - differential mono audio signal from the carkit or device I have a mobile electronics installation business and am selling off some excess inventory. Please feel free to send a message if you have further questions about any of my items. I am willing to ship this item internationally, but please contact me first so that accurate shipping charges can be assessed. Thanks for looking!