I e-mailed randy t at keywiz with this question a few weeks back:
Is there any way to get the switch off the key wiz to a hidden spot on the outside of the cab?
This is his response:
"Not without some work and possible destruction of the KeyWiz. I recommend mounting it just inside the coin door. Once you flip it a couple of times, it's position will be second nature to you, so you won't even have to look inside."