Switch?
 

I'm curious if someone can tell me what the (broken) switch or sensor is on the top of my SM465 transmission? I know the lower switch is for the back up lights, but what is the one above that one?

http://i15.photobucket.com/albums/a3...p/IMG_2851.jpg

I did find this:

http://67-72chevytrucks.com/vboard/s...d.php?t=375157

Is this legit info? If so, it would appear as though it is no longer part of a functioning system. (Especially since I am running an HEI distributor) If that's the case I'll just leave it as is. (broken)

Thoughts?

Re: Switch?
 

don't think that other switch is needed...

Re: Switch?
 

Neutral safety switch