I can’t seem to figure out how these switches work. They seem to be identical, a simple 2 wire plunger that I figured would either have continuity when depressed or extended. However I have 4 of them, and can’t get any of them to “activate”. I was going to use the neutral switch to prevent starting in gear, but I can use the clutch switch to accomplish the same thing. But the reverse switch is needed for the backup lights. Any help would be appreciated.