I don't know about Ford but you could call them and ask. I would get a replacement from one of the Vendors. To remove, take the ground terminal off the battery, remove the bezel, they make a tool to do this, but it cost as much as the switch/almost.
You can use a needle nose pliers to insert into the slots and turn to left to get the bezel off, and then pull the switch down and unplug the harness.
I bought the last one from WCCC. Mustang's Unlimited has them but they are expensive at $55. I just purchased one at my local NAPA store in CT for $17.39 part number is: KS6526SB its in their MPE line of aftermarket products. This ones made overseas but works fine. They also have a higher end unit if you prefer at a price of $30 +/-. Hope this helps.