signal light switch,what are the odds

Ok installed a reman signal switch last year when we were restoring the Dart.Soon after it took a dump,if the leaver was not in the right spot It would have a left tail light on or the right tail light on.Got very pissed off at people saying you have a brake light out:angry7:Ya I know there looking out for us but,any hoot what are the chances this switch will do the same.We know electrical once you open it no return.Anyone else have a similar problem:wack:.