It's a external voltage regulator then can be replaced.I posted a diagram of where it is.

Answered by saturntech9 (expert)
23,394 answers provided

Thank you very much for your quick answer. This is what I was hoping, as my son can replace it for me now. I sure appreciate your answer. Merry Christmas to you. Judi

Response from Judi Todd
1 question asked

Thank ou saturntech9. Your answer is very much appreciated. Merry Christmas.....Judi

Response from Judi Todd
1 question asked

Your welcome hope you had a merry christmas.

Answered by saturntech9 (expert)
23,394 answers provided

My son wanted me to ask you also, if pretty much it sounds like it IS the voltage regulator that is causing the alternator to crank out 20 volts instead of 12 to 13? I mean, it seems like that would be the only thing that it could be. What is an (and I might get this wrong), EMI or EMC? Or if the car has an external VR, it doesn't have this other EMI or EMC? Thanks again for helping with this.

Response from Judi Todd
1 question asked

You have a external voltage regulator i posted the wire diagram to show you that.I also posted how to test the voltage regulator to see if it's bad.You could have a bad voltage regulator but i would do the test i posted to make sure that's what the problem is.

Answered by saturntech9 (expert)
23,394 answers provided

Thank you again for your help. I will forward this info to my son. Again, Happy Holidays! Judi

Response from Judi Todd
1 question asked

Your welcome that's what were here for happy holidays to you too.'

Answered by saturntech9 (expert)
23,394 answers provided