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Old 03-23-2012, 12:30 PM
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GM Alternator

I'm changing engines in my car and am going from an older generator and regulator to a 1 wire GM alternator. Do I still need the regulator and do I just need to run the 1 wire from the alternator to the battery? If I don't need the regulator, what do I do with the wires that came from it originally. Thanks

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Old 03-23-2012, 01:15 PM
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Quote:
Originally Posted by LBL
I'm changing engines in my car and am going from an older generator and regulator to a 1 wire GM alternator. Do I still need the regulator and do I just need to run the 1 wire from the alternator to the battery? If I don't need the regulator, what do I do with the wires that came from it originally. Thanks

Check posts under Docvetts wisdom. I think you will find all the information that you asked about.
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Old 03-23-2012, 03:14 PM
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Quote:
Originally Posted by LBL
I'm changing engines in my car and am going from an older generator and regulator to a 1 wire GM alternator. Do I still need the regulator and do I just need to run the 1 wire from the alternator to the battery? If I don't need the regulator, what do I do with the wires that came from it originally. Thanks
For a 1 wire you only need to hot wire to the post on the back. I personally do not recommend them. It is not hard to wire for a standard 3 wire and they function much better.

There are hundreds of posts on this topic on here and an excellent article on Madd electricals web site
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Old 03-23-2012, 04:23 PM
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Thanks

I will check them out .
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Old 03-23-2012, 07:56 PM
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Not a fan of the one wire, they work but....... here's a conversion dia from Doc
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Old 04-26-2012, 06:54 AM
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For most applications, the advantages of a THREE-WIRE alternator will far outweigh the little time saved with a ONE-WIRE installation.
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Old 04-26-2012, 10:00 AM
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I ran my car two seasons with the one wire arrangement then converted to the 3 wire - and quite frankly, cannot tell the difference as far as operation. The major advantage in using the 3 wire is that you eliminate a reverse current situation with a diode where the alternator will try to run as a motor, eventually frying it and having a possible fire hazard - and the reason I converted
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