Use this adapter harness to replace your factory speakers with aftermarket speakers without having to cut the vehicle speaker wiring and connector. Real time saver and also prevents electrical shorts and loose wiring by providing a secure connection. Plastic insulated speaker connection ends to prevent short-outs to the door metal. Includes 2 pair for 4 doors- 4 speaker harnesses. Made for Ford: 1999- 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 F150 F-150, 2005-2016 F-250/F-350/F-450/F-550