How do you replace rear speakers in a 1979 trans am?

To replace the rear speakers in a 1979 Trans Am, start by removing the rear seat and the rear speaker grille to access the speakers. Disconnect the old speakers by unscrewing them and unplugging the wiring harness. Install the new speakers by connecting them to the wiring harness and securing them in place with screws. Finally, reattach the speaker grille and the rear seat to complete the installation.