Use this harness to retain the factory reverse camera when adding an aftermarket radio. This harness is designed to retain the factory backup camera so it can be viewed through the display screen on the aftermarket radio. Works with Factory OEM installed backup camera. Use with aftermarket radio that has a backup camera input feature only- usually radio with video screen. Compatibility Notes: New aftermarket radio must have backup camera input capability. Only works with vehicles that originally came with a Factory Navigation system. Compatible vehicles: Only works with vehicles that came with factory navigation: Made for Ford: 2010-2012 F-150 F150, 2009-2012 Flex, 2010-2012 Fusion, 2011-2014 Mustang; Made for Lincoln: 2010-2011 Mark LT