Locate switch or indicator lamp housing to be removed.
Tag and disconnect wire connectors from switch terminals.
Rotate locking tab to one side and lift off bottom half of switch.
Unscrew locking ring and lift out top half of switch.
Insert top half of new switch and secure with locking ring.
Install bottom half of new switch and secure with locking tab.
Reinstall wire connectors.
Be sure wiring is not caught or pinched when reinstalling front switch panel.
Reinstall front switch panel.
Turn on circuit breaker.
Turn on main power switch.