** PLUGS DIRECTLY INTO CARS OEM ANTENNA SOCKET AND THEN INTO THE NEW (AFTERMARKET) STEREO ** Plug N Play connection ** Allows AM/FM Radio to still work w/ After market Antenna ** Connects to any aftermarket receiver . Designed for a GTI 2006, 2007, 2008, 2009, 2010. 2011, 2012, 2013, 2014