How do you replace a Mercury Sable Side Mirror?

To replace a Mercury Sable side mirror, start by removing the interior door panel to access the mounting screws. Disconnect the electrical connector for the mirror, then unscrew the old mirror from the door. Install the new mirror by reversing the process: secure it with screws, reconnect the electrical harness, and reattach the door panel. Finally, test the mirror's adjustability and functionality before finishing up.