Brake Light Switch?

Depending on what car this is, you may have the wrong switch in it. Chryslers switch didn't have a long threaded barrel and jamb nut(s) to adjust it like other brands have. Chrysler affixed the switch to the bracket and adjusted that brackets position. A previous owner may have substituted the a different switch. We've seen that before. Either or... it works until it don't. Switches wear, bushings wear, adjustment or replacement req'd.