How do you repair or replace the power antenna on a 1985 Toyota supra?

To repair or replace the power antenna on a 1985 Toyota Supra, first, remove the interior trim panel to access the antenna assembly. Disconnect the power and antenna cable before unscrewing the mounting bolts and removing the old antenna. If replacing, install the new antenna by reversing the removal steps, ensuring all connections are secure. Finally, test the antenna to ensure it extends and retracts properly.