Does your tractor have any blank holes where you can install a factory switch? My Case DX35 had some blanks where I could put a factory switch for an LED light bar.
I would not use that switch in a application like yours. You need a switch with the seal on the toggle lever. Moisture will get in there a ruion the switch in short order.
As someone else said, is there another place you can put the switch ? Or drill a new hole in the dash for your switch.
You will want on like this:
Cole Hersee 55021 Standard Heavy Duty Metal Toggle Switch w/ Sealing O-Ring, SPDT, 25A
If you need anything special in switches, your first stop should be Digikey and Mouser Electronics. Their search filters allow you to narrow down what is important to you and they have thousands of options.