Radio Wire Harness and Antenna Adapter. 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. This harness only works with factory amplified systems like Bose, JBL, etc. Not compatible with standard factory systems. Antenna adapter to plug and play to factory antenna connection to retain radio reception. Compatibility Notes: Only works with the premium system like Bose. Only works with the factory premium external amp systems. Compatible Vehicles: Bose/premium systems only. Cadillac: 1999-2002 Escalade; Made for Chevrolet: 2002 Avalanche, 1995-2000 CK Pickup, 1999-2002 Silverado , 1995-2002 Suburban, 1995-2002 Tahoe; GMC: 1999-2002 Sierra, 1995-1998 CK Pickup, 1995-1999 Suburban, 1995-2002 Yukon; Pontiac: 1997-2003 Grand Prix