Mike - This is the one I used. It seems the o-ring is "new and improved" method of sealing the switch according to the description. I search the internet and they all have an o-ring. Also, I would suspect if its in to far and opens again as I shift into reverse, the light should come on briefly before going off. On another thread, Someone else had the same problem and they took the switch to a machine shop and had the face milled down. I would like to avoid doing this if possible.
I bet this new and improved switch is actually a switch for some other car that just happens to fit. "Sort of, almost, close enough, should work". Can someone measure an old switch and compare it to this "new" switch? Just for fun take the o-ring off and try the switch without it.
