Compatible with Ford stereo with no Sync: Escape 2006-2007, 2003 - 2010 Crown Victoria, Expedition 2007-2014, Explorer 2006-2010, Explorer Sport Trac 2007-2010, F150 2004-2009, Taurus X 2008-2009, Edge 2007-2010, Mustang 2004-2009 Fit for Lincoln: MKX (w/ OEM NAV) 2007-2010, Navigator (w/ OEM NAV) 2007-2014, Mercury: Mariner 2008-2011, Mountaineer 2006-2010, Sable 2008-2009; Hyundai Sonata 2006-2008 Allow early year Ford/Lincoln/Mercury with factory amplifier to stop pop noise when install an aftermarket head unit to enable continue to use the amp and door speakers from the factory system Some vehicles usually requires the red ignition wire power supply from the new radio has to be run separately from the vehicle radio harness; in this case, install will not retain some features like steering audio controls, rear DVD audio unless extra adapters use Easy to install: Take the harness from new stereo and matched up the wire colors; directly plug without cut or splice anything in the car Package include: 1x radio harness. 1x 12 Volt to 5 Volt Step Down Adapter