#1  
Old 03-13-2023, 10:02 PM
68lemans462's Avatar
68lemans462 68lemans462 is offline
Ultimate Warrior
 
Join Date: Jul 2003
Location: Lakewood, Colorado
Posts: 1,418
Default CS144 Alternator wiring

I grabbed this rebuilt 120A CS144 at the junkyard out of a '90 Caddy Deville. This is going in my 68 GTO clone with idiot light for the GEN. The '68 has a DK BLUE and BLK SGL WHITE coming off the stock alternator which head for the voltage regulator (which will be removed). How do these wires connect with the CS144? Will the idiot light continue to work with this alternator?
Attached Thumbnails
Click image for larger version

Name:	cs144-pinout.jpg
Views:	72
Size:	52.9 KB
ID:	608821   Click image for larger version

Name:	20230313_194542.jpg
Views:	75
Size:	51.7 KB
ID:	608822   Click image for larger version

Name:	20230313_194527.jpg
Views:	80
Size:	34.6 KB
ID:	608823  

__________________
*************************************
1968 Lemans. 37,000 original miles. GTO clone. 462ci/KRE 290 heads. UltraDyne 280/288 Solid/850 Qjet by Cliff/Performer RPM/TSP 9.5" in TH400/8.5" 3.42 gears/3950# Race weight/12.58@106 at Bandimere speedway high altitude
  #2  
Old 03-13-2023, 10:11 PM
Formulas Formulas is offline
Ultimate Warrior
 
Join Date: Dec 2004
Posts: 2,660
Default

I have seen adaptor pigtails for that sort of thing, they plug into alt. then you plug your existing wires in the pigtail

but i have never used one and not sure where i saw them but check it out

__________________
A man who falls for everything stands for nothing.
  #3  
Old 03-13-2023, 11:42 PM
68lemans462's Avatar
68lemans462 68lemans462 is offline
Ultimate Warrior
 
Join Date: Jul 2003
Location: Lakewood, Colorado
Posts: 1,418
Default

I found this stuff online:

Unlike other charging systems which have three wires connected to the alternator, the CS-121 and CS-130 may be used with only two wires connected to the alternator. The output wire to the battery positive, and an "L" terminal wire connected to the charge indicator bulb, or to the resistor, or to both.

One wire will connect to the output post on the rear of the alternator and the other will be connected through a dash light or to a switched ignition source.

Which wire is the charge indicator bulb or the resistor? Is it the DK BLUE or Blk/White?

__________________
*************************************
1968 Lemans. 37,000 original miles. GTO clone. 462ci/KRE 290 heads. UltraDyne 280/288 Solid/850 Qjet by Cliff/Performer RPM/TSP 9.5" in TH400/8.5" 3.42 gears/3950# Race weight/12.58@106 at Bandimere speedway high altitude

Last edited by 68lemans462; 03-14-2023 at 12:11 AM.
  #4  
Old 03-14-2023, 02:03 AM
OG68's Avatar
OG68 OG68 is online now
Ultimate Warrior
 
Join Date: Dec 2011
Location: Chula Vista, CA
Posts: 1,475
Default

Neither. The brown wire from the voltage regulator feeds the GEN light.
But as mentioned earlier there are adapter harnesses that bypass the regulator.

From MAD Enterprises;

http://www.madelectrical.com/catalog/cs-130.shtml

__________________
Ed

1968 GTO (Thanks Mom)
2006 Silverado
2007 Cadillac SRX
2015 Chevy Express

  #5  
Old 03-14-2023, 07:53 PM
chiphead's Avatar
chiphead chiphead is offline
Ultimate Warrior
 
Join Date: Nov 2004
Location: Aiken, SC
Posts: 5,182
Default

I recently did this on a cs-130. The L wire goes to the original charging light which connected to the external voltage regulator. Disconnect from the voltage regulator and run it to the L terminal on new alternator. The charge light will work. If you don't use the charge light you have to put a resistor in line if that wire otherwise you'll damage the internal regulator in the alt.
Connect the S wire from the alternator to the original B+ junction in the engine harness. If you don't want to do that then just loop it back to the b+ output on the alternator.
For the b+ output of the alternator run a 4 gauge wire back to b+ on the battery. You don't want to melt that wire if the alternator is generating rated output.

__________________
I could explain all this to the girl at the parts store, but she'd probably call the asylum.

White '67 LeMans 407/TH350/Ford 3.89... RIP
Red '67 LeMans. 407/TH400/Ford 3.25
The Following User Says Thank You to chiphead For This Useful Post:
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 11:05 AM.

 

About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.

 




Copyright © 2017