Radio Stereo Install Dash Kit + wire harness + antenna adapter for Audi A4 2002 2003 2004 2005 2006 2007 2008, RS4(05-08)**** Stereo wiring Harness, Dash Install Kit Faceplate, & Fm Antenna Adaptor (COMPLETE After market Stereo Wire Installation Kit): DASH INSTALL KIT + RADIO WIRE HARNESS + FM ANTENNA ADAPTER **(INCLUDES ALL PARTS NEEDED FOR INSTALLATION OF AFTERMARKET RADIO) *** THE HARNESS (WILL NOT WORK on PREMIUM / AMPLIFIED SYSTEMS) **WILL NOT WORK ON FACTORY AMPLIFIED SYSTEMS: LIKE BOSE, Monsoon, INFINITY, JBL, ONSTAR, PIONEER, WARNING CHIMES PLAYED THROUGH FACTORY SPEAKERS, AND OTHER PREMIUM SYSTEMS *** DOES NOT WORK ON VEHICLES THAT HAVE R.A.P/CANBUS/ONSTAR/SYNC OR DELAYED TURN OFF SYSTEMS; (WHEN RADIO STAYS ON AFTER PULLING KEY FROM IGNITION, THEN TURNS OFF WHEN A DOOR IS OPENED) ! *** THIS COMBO KIT - REPLACES (FACTORY/OEM STOCK RADIO TO AFTERMARKET STEREO) -STANDARD SOUND SYSTEMS ONLY. (Not for CANBUS or Premium/Amplified SYSTEMS) ****RCA aux input wire included Easier to add during the initial install, instead of removing and reinstalling the radio later** Will work with any portable device that a 1/8" headphones jack on like an Iphone, ipod, and cell phone***