Compact Stereo Antenna Harness Adapter for Installing a New Radio Into a Pontiac, Firebird Trans AM, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Antenna adapter for installing a new Radio into a PONTIAC FIREBIRD TRANS AM 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 CarXtc adapter plugs directly into the antenna wire beyond the radio found in a FIREBIRD TRANS AM Plugs directly into your vehicle radio antenna harness behind the factory radio. Antenna adapter is needed for your PONTIAC FIREBIRD TRANS AM 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 00, 01, 02 If installing an FM modulator you will need this and the reverse antenna adapter