CS144 Alternator, is this damn thing wired right?

MrSony

Geezer
Nov 15, 2014
6,510
113
Des Moines, Iowa
It seems to be, the Alternator works, it now has a brand new battery manufactured two months ago, and it still has trouble charging. It will eventually but it seems the Alternator has trouble with the first initial "kick" and doesn't like to start charging. I've also noticed my batt light doesn't work. Could that have an effect?
IMG_20221127_214041681.jpg
 
Last edited:

Clone TIE Pilot

Comic Book Super Hero
Aug 14, 2011
3,416
113
Galaxy far far away
May want to move the regulator "sensing" wire to the starter terminal. Make sure your grounds are clean, I had a charging issue caused by dirty alternator brackets affecting ground.
 
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g0thiac

G-Body Guru
Sep 6, 2020
795
63
It seems to be, the Alternator works, it now has a brand new battery manufactured two months ago, and it still has trouble charging. It will eventually but it seems the Alternator has trouble with the first initial "kick" and doesn't like to start charging. I've also noticed my batt light doesn't work. Could that have an effect?
View attachment 211879
I have a CS144 wired up on my Caprice.

I went from a CS130 so it was an easy swap. You went from a v belt alt?
 

g0thiac

G-Body Guru
Sep 6, 2020
795
63
It seems to be, the Alternator works, it now has a brand new battery manufactured two months ago, and it still has trouble charging. It will eventually but it seems the Alternator has trouble with the first initial "kick" and doesn't like to start charging. I've also noticed my batt light doesn't work. Could that have an effect?
View attachment 211879
You have a dummy bulb or volt meter gauge cluster right??

Because the brown wire, goes to that. The red, should work like shown.
 

g0thiac

G-Body Guru
Sep 6, 2020
795
63
If the vehicle charged fine previously?

I would send it back and condemn the rectifier bridge 🤷‍♀😥😥😥
 

ELCAM

G-Body Guru
Jun 19, 2021
808
93
With the key on there should be about 12 Volts on the brown wire.
 
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MrSony

Geezer
Thread starter
Nov 15, 2014
6,510
113
Des Moines, Iowa
You have a dummy bulb or volt meter gauge cluster right??

Because the brown wire, goes to that. The red, should work like shown.
Regal with idiot lights. Brown wire goes to that.
 

64nailhead

Goat Herder
Supporting Member
Dec 1, 2014
5,121
113
Upstate NY
El cam is directing you.

If your idiot light isn’t working ,and it previously was, then you don’t have it hooked up correctly.

It sounds like your pigtail has the F and L pins swapped on the alternator pigtail. Look at the attachment. It appears you bought a generic pigtail for the alternator, it will require to be wired differently depending on the setup the vehicle has. I doubt the alternator is no good, but anything is possible.
 

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MrSony

Geezer
Thread starter
Nov 15, 2014
6,510
113
Des Moines, Iowa
I have a CS144 wired up on my Caprice.

I went from a CS130 so it was an easy swap. You went from a v belt alt?
Yes. 10/12si to cs. I have the correct conversion harness without the resistor, as the idiot light I have is the resistor.
 

MrSony

Geezer
Thread starter
Nov 15, 2014
6,510
113
Des Moines, Iowa
El cam is directing you.

If your idiot light isn’t working ,and it previously was, then you don’t have it hooked up correctly.

It sounds like your pigtail has the F and L pins swapped on the alternator pigtail. Look at the attachment. It appears you bought a generic pigtail for the alternator, it will require to be wired differently depending on the setup the vehicle has. I doubt the alternator is no good, but anything is possible.
The odd thing is that it's a decently made plug that came in an original ac Delco package.
 

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