Stereo ANTENNA Harness Chevy Avalanche 03 04 05 AFTERMARKET STEREO/RADIO AN. ** Simply plugs into New Aftermarket Antenna and then into original Antenna wire ** Allows connection an aftermarket receiver to the factory antenna cable. ** Has a male Motorola plug on one end and OEM jack on the other 2003 2004 2005 ** Use with New Aftermarket Radio Installs - Keeps FM / AM Factory Antenna Useable.