Easy to use. Wire harness do not directly plug and play, Solder connections and heat shrink tubing for best results. Made of high quality wire material, and all the wires are there using standardized color codes, which made installing the head unit a breeze. The nissan stereo upgrade wire allows to install an aftermarket amplifier and speakers to the OEM radio Fit radio without cutting any factory wires. Replacement for Infiniti: 1999 G20, 2003-2005 G35, 1996/2000 I30, 1997 Q45, 1997-2001 QX4, 2003 G35 - Tan Dash Bezel, 2003-2007G35 Coupe, 2003-2008 G35 Sedan, 2003 G35- Black Dash Bezel, 2003 G35- Silver Dash Bezel, 2004 G35-BlackDK, 2004 G35-SilverDK, 2004 G35-TanDK, 1996-1999 I30, 1995-2003 Q45, 1997-1999 Q45 Bose, 1997-2000 QX4, 1997-1999QX4 Bose, 2004-2010 QX56. Compatible with Nissan: 1995 - 1998 240SX, 2003 - 2005 350Z, 1995 - 2005 Altima, 1998 - 2005/(XE and SE with no options) 2012 Frontier , 1995 - 2005 Maxima, 2004 - 2005 Quest, 1995 - 2006 Sentra, 2004 - 2005/(S model only base) 2012 Titan, 2000 - 2008/(X MODEL) 2011 Xterra, 2008-2010 2012 Pathfinder S, 2005-2007 Pathfinder (non-NAV) , 2003-2007 Murano, 1995-1998 200SX, 1995-1998 240SX, 2003-2009 350Z.