Wire harness and antenna adapter for installing an aftermarket radio. Red ignition wire of the new radio has to be run separately from the vehicle radio harness (factory radio plug has no ignition power wire). Not compatible with factory external amplified systems like Bose, JBL, etc. Only compatible with standard factory audio system with no external amplifier. Will not retain steering audio controls. Compatible vehicles: No external factory amp vehicles: Made for Jeep: 2008-2013 Grand Cherokee, 2008-2012 Liberty, 2007-2017 Wrangler