Bypassing generator for alternator
Thread Starter
Drifting
Joined: Jul 2020
Posts: 1,501
Likes: 323
From: San Diego
Bypassing generator for alternator
I am running an alternator on my ‘68. I just replaced the factory engine harness and I believe the ‘68s used to have generators. I looked online and this showed how to bypass the generator for the alternator. Does this look right to you?
This is temporary to see if this is correct and if it works.
This is temporary to see if this is correct and if it works.
Le Mans Master
Joined: Jan 2001
Posts: 6,743
Likes: 1,385
Jd21476
The 68 had externally regulated Alternator (AC Generator).
Check out the link below:
The color of the leads may not be exact but you can follow them back per the attached diagram.
It is for converting to a 12SI and I do NOT recognize that oddball Alternator you have going there?
I converted mine ages ago but I soldered the leads together and eliminated the whole voltage regulator connections.
If I remember I'll look tomorrow to see what leads I joined together.
What is that weird alternator you have there?
http://wallaceracing.com/alt-conversion.html
The 68 had externally regulated Alternator (AC Generator).
Check out the link below:
The color of the leads may not be exact but you can follow them back per the attached diagram.
It is for converting to a 12SI and I do NOT recognize that oddball Alternator you have going there?
I converted mine ages ago but I soldered the leads together and eliminated the whole voltage regulator connections.
If I remember I'll look tomorrow to see what leads I joined together.
What is that weird alternator you have there?
http://wallaceracing.com/alt-conversion.html
Le Mans Master
Joined: Jan 2001
Posts: 6,743
Likes: 1,385
Jd21476
Could you tell me the alternator model/part number.
It may be a Pulse Width Modulated (PWM) controlled alternator. I was researching one of those (in fact I have one to install to replace my CS-144) and if you have the appropriate LS ECM and harness then the old external regulator wiring will be pretty much unnecessary...... your ECM will control it.
OR, you can use external controls for PWM
Could you tell me the alternator model/part number.
It may be a Pulse Width Modulated (PWM) controlled alternator. I was researching one of those (in fact I have one to install to replace my CS-144) and if you have the appropriate LS ECM and harness then the old external regulator wiring will be pretty much unnecessary...... your ECM will control it.
OR, you can use external controls for PWM
Last edited by carriljc; Dec 1, 2024 at 10:17 PM.
Race Director
Joined: Jun 2000
Posts: 10,046
Likes: 675
From: FL
Here is what I found at chevelles.com:
https://www.chevelles.com/threads/pl...ulator.515770/
At the external regulator;
The blue wire is jumpered to the brown wire. The white wire and the orange wire are capped off so that they will not short out to anything.
So, remove that middle jumper wire and just jump the brown to the blue.
https://www.chevelles.com/threads/pl...ulator.515770/
At the external regulator;
The blue wire is jumpered to the brown wire. The white wire and the orange wire are capped off so that they will not short out to anything.
So, remove that middle jumper wire and just jump the brown to the blue.
Le Mans Master
Joined: Jan 2001
Posts: 6,743
Likes: 1,385
Jd21476
Did you end up getting the alternator you mention in the post below? The PowerMaster 584061?
https://www.corvetteforum.com/forums...post1608045048
If so, then per summit racing equipment website that is a GM CS130D/AD Alternator.....
https://www.summitracing.com/parts/p...EWnBcsiaDwMMIm
and within that website it tells you what alternator it is....GM CS130D/AD Alternator.... and sends you to this page: https://static.summitracing.com/glob..._cs130d_ad.pdf
SO - is that 2 pin or a 4 pin connector on your alternator?
Did you end up getting the alternator you mention in the post below? The PowerMaster 584061?
https://www.corvetteforum.com/forums...post1608045048
If so, then per summit racing equipment website that is a GM CS130D/AD Alternator.....
https://www.summitracing.com/parts/p...EWnBcsiaDwMMIm
and within that website it tells you what alternator it is....GM CS130D/AD Alternator.... and sends you to this page: https://static.summitracing.com/glob..._cs130d_ad.pdf
SO - is that 2 pin or a 4 pin connector on your alternator?
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