Re: Voltage Regulator
You're on the right track. Voltage/current, read power, demands are the greatest right after using the starter, min 14.2 at 30 amps or so, dependent upon battery charge.
As the battery warms up, it takes less power for recharge, ie, min 13.6 volts.
Install the new VR, pack in a fully charged battery or a jumpbox, drive for 15-20 miles and check voltage at both the alt BATT stud and at the battery. There will be a 1 volt difference due to cable loss at the battery since it is trunk mounted. Min 13.6 at the battery posts after the run.
There is an adjustment inside the VR. Has to be for manf tolerances of parts used. OE designed VR's depended upon self-generated heat for the charge voltage, around 130°F, remove the cover and charge voltage dropped 0.5-0.7 volts, typically.
What you can do for future reference, make a voltage comparision chart, after 15-20 miles of running,
Field, 2, 3, 4, and alt BATT stud, R, & T.
New VR: same as above.
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