JayC,
You didn't say what machine you have, but maybe most are the same.
Follow the reverse pedal rod through frame of tractor.
My switch was located above the rod on inside of frame.
You can look under the inside of the frame with a small hand mirror if your deck is attached.
The metal tab to push on the switch is very thin, can easily be bent to one side to miss the switch.
This way nothing has to be disconnected and is easily bent back in case you have to have warranty work done.
Hope this helps.