How do you change the drivers side wing mirror on a land rover discovery 3?

To change the driver's side wing mirror on a Land Rover Discovery 3, first, disconnect the vehicle's battery for safety. Then, use a trim removal tool to carefully detach the interior door panel, exposing the mirror's mounting screws. Remove the screws and disconnect the electrical connector for the mirror, then install the new mirror by reversing the steps: connect the electrical plug, secure the mirror with screws, and reattach the door panel. Finally, reconnect the battery and test the mirror functions.