Wire harness and antenna adapter for installing an aftermarket radio. Not compatible with factory amplified systems like Bose, JBL, Sythesis, etc. Only compatible with standard factory audio system. Compatible with:1997 - 2003 Buick Century, 1995 - 1999 Buick LeSabre, 1995 - 2004 Buick Park Avenue, 1995 - 2003 Buick Regal, 1996 - 1999 Buick Riviera, 1995 - 1996 Buick Roadmaster, 1996 - 1998 Buick Skylark, 1997 - 2001 Cadillac Catera, 1996 - 2005 Cadillac De Ville, 1992 - 2004 Cadillac El Dorado, 1994 - 1996 Cadillac Fleetwood, 1992 - 2004 Cadillac Seville, 1996 - 1998 Oldsmobile Achieva, 1999 - 2000 Oldsmobile Alero, 1995 - 2000 Oldsmobile Aurora, 1998 - 2001 Oldsmobile Bravada, 1995 - 1997 Oldsmobile Cutlass Supreme, 1994 - 1999 Oldsmobile Eighty Eight, 1998 - 2002 Oldsmobile Intrigue, 1996 - 1999 Oldsmobile LSS, 1994 - 1996 Oldsmobile Ninety Eight, 1994 - 1998 Oldsmobile Regency