How do you change the multifunction switch on a 2005 ford excursion?

To change the multifunction switch on a 2005 Ford Excursion, first disconnect the negative battery terminal to ensure safety. Remove the steering wheel and any necessary trim pieces to access the switch, then detach the wiring harness from the old switch. Install the new multifunction switch by reversing the removal process, ensuring everything is securely connected, and reassemble the steering wheel and trim. Finally, reconnect the battery and test the new switch to confirm proper functionality.