Engine Part Identification Help

[Collier]

I am trying to finish up the re-wire of my 72’ Bronco using the Painless 23-Circuit harness and need some assistance. I am at the engine re-wire section and need assistance in finding the Neutral Safety Switch / Reverse Light Switch. First of all I am not sure my Bronco even has a Neutral Safety Switch since it has the factory manual 3-speed transmission. In my attempt to decipher the previous owner’s wiring to locate these items, I need help identifying this:



This part has 2 wires plugged into it that run towards the firewall. One of the wires is spliced into a single wire that runs down to the side of the Transmission while the other wire has a pigtail (?) type connection (see below).



Any ideas what this is? Thanks for helping the ignorant.

 

[Viperwolf1]

There is no NSS. The reverse light switch would be on the engine side end of the steering column.

That looks like an electrically actuated vac switch. It could be actuated from the door post mounted temp sensor which was specific to '72 Broncos only.

http://classicbroncos.com/forums/showthread.php?t=85163&highlight=door+post+temp+sensor