What is it? (another wiring question)

Hey Guys, Im rewiring a 70 REN I with half the wiring ripped out (of course it the half that includes the dash and engine). Im unsure of a terminal point, its situated between the bottom of the ALT and the oil filter, about an inch / inch and a half in diam with a single terminal point. Is this my oil press sender?

Also, with the wiring being gone, and me new to CJ5 wiring (or any wiring) can someone tell me the terminal points for the voltage regulator wires after the male / female connection? The wires are one black, one grey, one green (I believe this is original).

Thanks for any help, this was supposed to be wiring day but ended up being screw-the-wire-Im-installing-the-new-gas-tank-because-thats-easy day...

 

On your voltage regulator wiring, are you using a Motorola Alt, or what?

 

Ugh... This is where I show how little I know... It is a six post Alt, while looking at the back of the Alt there are 2 posts at the 3 o'clock, a single blade at the 12 o'clock (ish) and 3 at the 7 o'clock (these seem to be jumped (?) together) As far as "is it a motorola Alt?" I honestly have no idea... The reason why I say the voltage reg is a Motorola is because it says Motorola on the side of it, common sense and best guess is all I got at this point... Thanks for the help...