You probably have an old DN model. You can't use the external regulator with an internal one. It's one or the other. If your not concerned about being "correct" as far as originality, I would suggest you move up to a SI alternator. A 12SI 94 amp is simple to install. They're are several sites to help you do this. These are a couple of links for you to look at. This is a good article... http://hotrod.com/techarticles/pit/index15.html also M.A.D. has alot of info..... http://www.madelectrical.com/electricaltech/delcoremy.shtml The fact that you have a serpentine belt means nothing as far as which alt. you have. You can put that belt on just about anything with the right pulleys. Hope this helps you out. I did this swap to a 12 SI on my '66. You won't regret it. Especially if your in a slow cruise. And if you add air, radio amp, elect. fans, etc later on you'll be all set with enough amps to run everything.
--- Al Hembd <[EMAIL PROTECTED]> wrote: > I am not sure if it is a 10si or a 12si it has a > serpentine belt. The > battery is good it holds a charge. The car does not > run when the battery > cable is pulled off. The car dies. Is it ok to run > the old voltage regulator > with the alt that has the built in regulator. When > I turn the key on with > out the car running should I have 12 voltage at the > alt and what wire > should it be. I believe that on the alt, on the back > where the wires plug in > there is the letter "F" on one side and not sure the > letter on the other > side of the plug in. I am going to take the alt off > and have it checked. But > back again to the switched hot wire to the alt? If > there is not a hot to the > alt do I go back to the external voltage regulator. > > Thanks > > AL > ----- Original Message ----- > From: "Bow Tie" <[EMAIL PROTECTED]> > To: "The Chevelle Mailing List" > <[email protected]> > Sent: Wednesday, September 14, 2005 11:41 AM > Subject: Re: [Chevelle-list] alternator stopped > charging new with old > > > > What do you mean by "new style alternator"? Is it > a > > 10SI or 12 SI? If it is, it has an internal > regulator. > > If it's a DN "old style" you have an external > > regulator. You will only have as many volts at the > > alt. as you have in the battery with the car not > > running. You can check the alt. With a volt meter > on > > DC you can check at the battery or on the bus bar > of > > your horn relay(10 ga. red wire) while the engine > is > > running at about 2400 rpm. You should show about > 14.5 > > volts. If not, take your alt. to a store that can > > check it. This test is not always accurate. You > may > > have a bad alt. and the thing will test good. The > > charging wire going to the regulator will be a 20 > ga. > > red. It should be the 2nd wire from the pass. > side. > > You may have a weak battery also that won't hold a > > charge. > > --- Al Hembd <[EMAIL PROTECTED]> wrote: > > > >> I have a question I have a 70 Chevelle SS and > when I > >> got it a new style alternator and the original > >> voltage regulator is on it. and it stopped > charging. > >> This is my question. When I turn on the key > should I > >> have 12 volts to the alt, and from what lead > coming > >> out of the old regulator should it be. If I don't > >> should I replace the old regulator or should I > >> bypass it. If I do? how do I do it and still keep > >> the idiot light working normal. I need to fix > this > >> because I will be going on a car cruse on OCT. > 10. > >> > >> Thanks > >> > >> AL > > > > > > > > > > __________________________________ > > Yahoo! Mail - PC Magazine Editors' Choice 2005 > > http://mail.yahoo.com > > > > > > > > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
