How do you replace the retractible antenna on a 91 Mercedes 500 SL?

To replace the retractable antenna on a 1991 Mercedes 500 SL, first, ensure the vehicle is turned off and disconnect the battery to avoid any electrical issues. Remove the old antenna by accessing it through the trunk; unscrew the retaining nut and disconnect the electrical connectors. Install the new antenna by reversing the process: connect the electrical wires and secure the antenna with the retaining nut. Finally, reconnect the battery and test the antenna's functionality.