Our T-harnesses let you integrate an additional device such as an aftermarket bluetooth kit into your car's factory radio and it's wiring. This allows your aftermarket Blue tooth kit to work with your car's speakers directly when on a phone call and revert back to the stereo when the phone is not in use. CT10SU01 Impreza (GD) 2002-2007 Liberty 1994-2002 Outback 2000-2003 (3GEN MY03) Also suitable for units with Kenwood Factory Nav 2008-2013