Easy Use. All the wires are there using standardized color codes, which made installing the head unit a breeze.This Aftermarket Antenna adapter just use Blue wire attaches to the remote turn on from head unit. There is some kind of amplifier for the antenna in the car that needs to be turned on. If you are connecting this blue wire to an ISO harness then just connect it to the blue wire. Allow to install an aftermarket radio using the existing factory wiring and connectors/Factory Radio to Aftermarket Antenna Adapter or replacing original factory radio/ Auto Stereo CD Player. NN04B Replacement For Infiniti model: 2009 - 2013 G37/ 2015 Q40 / 2014-2015 Q60. Model 70-7552 and NI12 Replacement For Subaru Model:2009 - 2014 Forester (Without Factory Navigation)/2008 - 2013 Impreza (Without Factory Navigation)/2010 - 2013 Legacy (Without Factory Navigation)/2010 - 2013 Outback (Without Factory Navigation)/2008 - 2013 WRX (Without Factory Navigation). Compatible with Nissan model: 2009 - 2013 370Z/2007 - 2013 Altima/2008 - 2013 Armada/2009 - 2013 Cube/2009 - 2012 Frontier/2011 - 2013 Juke/2007 - 2013 Maxima/2009 - 2013 Murano/2012 - 2013 NV/2008 - 2013 Pathfinder (Does not fit vehicles with 6 speaker system)/2008 - 2013 Rogue/2007 - 2012 Sentra/2008 - 2013 Titan/2007 - 2013 Versa/2009 - 2012 Xterra.