'71 Duster 340 Battery getting overcharged

Your original post. Let's stay in this thread for simplicity The way that is hooked up, it should not be charging AT ALL

Again, sorry bout that. So how should it be hooked up?....this is the way it's been since I got the car a couple of months ago and it's always showed it charging , but lately it's been showing 16 volts on the voltmeter. The regulator is the "little black box" kind with one terminal ( field) up top and one terminal ( IGN) on the bottom.