How do you install a side mirror on a caddilac dts?

To install a side mirror on a Cadillac DTS, first, remove the interior door panel by unscrewing and unclipping it. Disconnect the wiring harness for the mirror if it’s powered. Unscrew the old mirror from the outside and replace it with the new one, securing it with screws. Finally, reconnect the wiring, reattach the door panel, and test the mirror for proper functionality.