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Alternator Change from 2 wire to 1 Question
Thread Starter
Safety Car
Joined: Nov 2004
Posts: 4,359
Likes: 57
From: Mundelein Illinois
Alternator Change from 2 wire to 1 Question
I want to put the GM serpentine system on my car. You get a 1 wire alternator. What do you have to change to do this. Also any problem with the change?
Thanks
Thanks
Le Mans Master
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
Yes and Yes
The 3 wire alt from the factory has a connector on the side that has 2 connections. 1 for voltage sensing basically in the middle (electrically) of the car. The second connection is the exciter circuit for the alternator and also turns on the GEN light in the case of an alternator failure. There is a reason GM and everyone else uses 3 wire vs 1 wire.
The 3 wire you have will bolt up in the new bracket setup, but it might have to be indexed. That will happen if the connection on the back of the alt and/or the side end up on the engine side with new setup
The 3 wire alt from the factory has a connector on the side that has 2 connections. 1 for voltage sensing basically in the middle (electrically) of the car. The second connection is the exciter circuit for the alternator and also turns on the GEN light in the case of an alternator failure. There is a reason GM and everyone else uses 3 wire vs 1 wire.
The 3 wire you have will bolt up in the new bracket setup, but it might have to be indexed. That will happen if the connection on the back of the alt and/or the side end up on the engine side with new setup
Thread Starter
Safety Car
Joined: Nov 2004
Posts: 4,359
Likes: 57
From: Mundelein Illinois
Sixfooter,
When you mention index, are you talking about changing the clock position of the alt. If so, I have done that before. If not, please explain.
Thanks for the help
When you mention index, are you talking about changing the clock position of the alt. If so, I have done that before. If not, please explain.
Thanks for the help
Melting Slicks
Joined: May 2002
Posts: 2,716
Likes: 121
From: Sulphur LA
St. Jude Donor '05-'06,'11,'13-'14,'16,'18,'19,'24, '25
I'm running a 1 wire alt, I have the Zoops serpentine set-up and it is working great. I have also read the paper on the Madelectric site and had some concerns with it also. My gen light works fine and this thing puts out some voltage and amps. I have only had the car together for a short time and I have not driven it on the road, although I have been driving it around the yard.
Neal
Neal
Le Mans Master
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
Originally Posted by spedaleden
Sixfooter,
When you mention index, are you talking about changing the clock position of the alt. If so, I have done that before. If not, please explain.
Thanks for the help
When you mention index, are you talking about changing the clock position of the alt. If so, I have done that before. If not, please explain.
Thanks for the help
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