727 Neutral Safety Switch ?

I have 727 trany. Im trying to get the NSS to work for the starter ground and the back up lights. Tell me if I'm wrong, but the two outside pins are the back up lights, 12 volts in and out, and the inside pin is the ground for the starter relay ground? I've checked the hot wire to the switch and have 12 volts. I've checked the center pin and have no ground out when in park, and nothing between the two outside pins in reverse. Bad switch?
Help1
Thanks for the post, Tony
etony58@gmail.com

You are correct...Center is NSS and two outside terminals are back-up..But you have it backwards at the other end of the switch...Plastic plunger operates the NSS and the pin activates the back-up lights..I'd make sure the shifter linkage is properly adjusted first thing...

Quote:

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You are correct...Center is NSS and two outside terminals are back-up..But you have it backwards at the other end of the switch...Plastic plunger operates the NSS and the pin activates the back-up lights..I'd make sure the shifter linkage is properly adjusted first thing...

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sorry but this is incorrect the center metal pin on the inside is what grounds to the VB creating the ground that runs to the starter sol.