New Project - '71 Plymouth Valiant

Also, I think I found the Oil Pressure Sending Unit... unfortunately, the end of it does not have the tab where the wire can click on (broken off possibly?). Can someone confirm this?

Pic is looking up under oil filter, from under passenger side front wheel well.

That gets a flat type of terminal that slips over that round end at the tip of the sending unit. V-8 cars usually have a gray wire from the factory...