Here's a good vid that shows how you change out the windshield wiper switch on a 1971 (or similar) Ford Country Squire: https://www.youtube.com/watch?v=hsHRlBHQ27I
Pssht. Easy peasy. Try changing a headlamp switch all the way up through '87, especially with my big body and long arms!
Headlamp switch is simple compared to changing the dash mounted radio speaker in pretty much... anything.
I had a '55 Star Chief Custom Catalina that not only dumped fine dust in my eyes while I lay across the seat to access all that stuff, the amplifier fell down and hit my forehead when I got the last fasteners out!
Actually the Country Squires dash mounted speaker is very easy. Of course, you have to take the dash apart but hell, you have to do that for the switch too!