The switches are plugged directly into a circuit board. You probably can't remove a switch from the front of the panel because the resistance of the six spade connectors is too much. You need to access through the hydraulic bay and remove ~8 screws holding the switch panel in place. About three of the screws are difficult to access. Then you can push the panel back and rotate it to a position that it will come out of the opening corner to corner. Then you can test the switch with a VOM.
These are the switches I replaced the originals with:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Just make sure they are the momentary on - off - momentary on style. (on) - off - (on)
.