Please help Me.."Overcharging"?

That's "fair" but you probably have SOME v drop

Put one meter probe on battery POS post, and the other on the blue alternator field wire. Turn the; key to "run" with engine off. Read the voltage, and you are hoping for LESS than .3V (three tenths of one volt) Any more means you have drop in the ignition harness. This voltage ADDS to the regulator set point. 1/2 volt, example, will take a properly operating voltage regulator at 13.8--14.2 and add 1/2 volt for 14.7.

I should have mentioned, also, to check charging voltage WARM if you did not. The regulator is someone temp. sensitive.

Next make sure of your regulator GROUND, which works the same way as harness drop, IE voltage drop across the ground path ALSO adds to the regulator voltage.

To do that, start the engine, run at a simulated "low cruise" RPM, and make the following check with all loads OFF, and then with heater blower, lights, etc, ON.

Put one probe of your meter on battery NEG post, and the other stab right into the regulator flange.

Once again, you are hoping for NOT MORE than .2V, and zero would be perfect


okay, I am frustrated. I am going to try the tests you showed above to see if I can find a leak in the system.
I did run a heavy wire from the intake manifold to the master. I did clean everything up really well!
I even put a new regulator on.
I am not at 15.00 while idling...ugh!! It got worse. It is a bit cold here today though. Like in the low 30's. That may be why it jumped a bit. But either way...ya know..
I did notice, that both the two self tapping style VR bolts that hold it to the firewall, just keep turning.
It is tight against the firewall. But those holes seemed stripped out to me.

1. Okay, the test with engine OFF from the POS battery to the blue wire...Is that taking the blue wire OFF the alt and check it there at the end of the wire?

2. I am sorry I don't know what you mean here exaclty? The second check is to stab into the Regulator flange? I have two wires going to the regulator?

Also wondering if this advance auto parts VR was a bad idea. Made in China.....MY original factory one to the car was working. Just on the high side like 14.70 or so

Sorry, I am good at working on cars. But bad at this wiring stuff!