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Old 10-13-2016, 10:02 AM   #1
DRipley
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Join Date: Oct 2016
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GM 4 wire alternator question

This question is about a GM 4 wire alternator. I'm trying to use a 300amp alternator to charge a battery bank. There isn't a starter or anything else in the circuit I just want to charge a battery bank with it. I'm spinning the alternator at 10,000rpm's. My question is do I need a voltage regulator and if so what do I do with the 4 wires?

Any and all help is appreciated
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Old 10-14-2016, 01:27 AM   #2
izzy_Britton
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Re: GM 4 wire alternator question

dont quote me on this because i might have it 100% backwards...

I do believe that the 4 wire alternator IS internally regulated at 14.1 volts. there are several threads over in the LS swap section where people are converting the 4 wire alternators into a 1 wire alternator. if i am not mistaken in order to do this the alternator MUST have an internal regulator. thats the easy part of your question right? now how to convert to 1 wire? not sure, its on my list of things to figure out for my LS swap.

One place to start is HERE
.looks straight forward



I am curious to know what your doing with your battery bank. what are you using to tirn the alternator at 10k?

10k seems too fast to me but heck, i dunno.

-Izzy
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Old 10-14-2016, 09:31 AM   #3
DRipley
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Re: GM 4 wire alternator question

You are correct 10,000rpm is to fast. I spoke with a machanic here in Lubbock and 1500rpm is what I need to spinthe alternator at. He use to work at an alternator shop here in town. He said that the alternator was self regulated. That you only needed a regulator for starting an engine, motors are electrical(lol).
The 4 pins are labeled I S A F, really their not but thats what they represent.
I and A are tied together in my application and S will be tied to a light to make sure I have an output from the alternator.

You can google 4 wire GM wiring diagrams and see a multitude of diffrent wiring diagrams. I'm sure one will fit what your.

What am I doing? I'm a master electrician,doesn't really crossover to trucks and cars 12 volt systems, but in theory does. I'm using radiant energy to run a universal motor to spin the alternator. I mentioned two things in the sentance above that you really don't undersand correctly. Radiant energy = ions in the air. Universal motor = motor that will run on AC or DC voltage. I can pickup ions in the air, (Tesla). Then the batterybank feeds an inverter to get a 120 volt circuit. Climate change=BS google ion cloud, itsall about a one world goverment. Man made consrtuct F&%kem in the neck.
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Last edited by DRipley; 10-14-2016 at 09:39 AM. Reason: The battery bank goes threw an inverter for 120 volt output
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