Radio Wire Harness use to add an aftermarket radio to the factory vehicle wiring. Standard wire coloring usually will connect color for color to aftermarket radio's wire harness. Plug and play to factory radio connector. Compatibility Notes: Will not work with premium factory amplified system like Bose, JBL, Infinity, etc. Will not retain factory steering audio controls. Compatible Vehicles: No Factory External Amp Vehicles. Made for Buick: 1997-2003 Century,1995-1999 Le Sabre, 1995-2005 Park Avenue, 1995-2004 Regal, 1996-1999 Riviera, 1995-1996 Roadmaster, 1996-1998 Skylark