383man
Well-Known Member
I have been running the Power Master one wire internal regulator one wire alt for about 2-1/2 years now. At 8 months it stopped charging so I checked it out and the internal reg was bad as its easy to test. They sent me a new one and all was fine until last week when I ran my 63 for a bit and noticed it was charging at 18 volts !! Unhook the green wire that the internal reg sends voltage into the field as the other brush is grounded. It stops charging and of course if I jump volts into the field it charges a ton. So I call them and its out of the 1 year warranty but Power Master says if I send them the alt they will check it and replace the reg but I pay shipping and the part. I said no thanks and decided to just wire the external Mopar electronic reg back into it. So I pull one of the ungrounded insulated brushes from my original alt and put both insulated brushes in my 100 amp alt. I wired it up using a relay so I took power right from my battery cable coming up from my trunk mounted battery. That way the reg and the field get 12 volts right from the battery and not through the ign switch so the reg has a better battery volt sense. Then I wire the relay to the ign switch key on volts so of course it turns on when the key is on. And it works great and charges just the same but since I have heard of others having trouble with the internal reg I figured after two gave me trouble I will just wire the external reg back in. Works great and I still get to use the Mopar alt so it looks more stock and original then using a jap or GM alt. Its nice that at night with the lights all on and the electric fan on the volts still stays at 14.2 at idle when the stock alt it would drop some at idle at night in gear with everything on. Course as soon as you hit the gas it would come back up and it never gave me any charging trouble with the stock 35 to 40 amp alt but I like that this one will charge more at idle and always stays from 14 to 14.5 all the time. Ron