How to replace outside mirrors on a 2002 ford f-250 super duty

You need to remove door trim panel there are (2) 7mm screws that hold panel on .. 1 is behind the lower red light lens and the other is behind switch panel for the power window switch . remove both screws and remove small black panel above door trim by pulling strait off .(now there are (4) 11mm nuts the hold mirror on 2 are behind the small rubber plugs in front of door that you can see with panel on and the other 2 are under panel that you can see after panel is removed . the wiring need to be disconneced you may have to remove speaker for acess to feed new wiring down into the door good luck