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How To - Tips => Electrical => Topic started by: usmc_butler on October 15, 2013, 08:51:36 AM
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My car isnt charging and I remember when I installed the wiring harness on the 3800 that the alternator plug is different and wont plug into this alternator. The plug I have has 3 connectors and the alternator has 4. I fond the correct plug I think but can somebody please tell me what wire needs to be hot from the key to get the alternator to charge?
This is the alternator that I have and this is the plug I need I believe...
http://www.ebay.com/itm/ALTERNATOR-WIRE-LEAD-PLUG-HARNESS-REPAIR-CONNECTOR-DELCO-CS130D-4-TERMINAL-/171132809292?pt=Motors_Car_Truck_Parts_Accessories&hash=item27d84f704c&vxp=mtr (http://www.ebay.com/itm/ALTERNATOR-WIRE-LEAD-PLUG-HARNESS-REPAIR-CONNECTOR-DELCO-CS130D-4-TERMINAL-/171132809292?pt=Motors_Car_Truck_Parts_Accessories&hash=item27d84f704c&vxp=mtr)
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Red - To the PCM
Orange - Optional, but I have been hooking them up anyways - Run to unswitched +12v. I tie it to where I get power from the power distribution post to supply to the PCM. I have both the S2 PCM and the alternator on a 10A fuse. People think I miswired the plug if there is only the red wire to it.
Gray - Used by some PCMs to know the alternator is turning and how much power the alternator is putting out. Not used with the standard Series 2 PCM swap.
The orange wire is a battery voltage sense wire. The battery sense wire would be needed if there was a significant voltage drop between the battery and the alternator. You might want to keep it if you have a remote battery, however it is not required.
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Do you have a pin assignment?
1 - 2 - 3 - 4
or
A - B - C - D
or
S - F - L - P
You can hook this up without a computer simply by using an alternator charge light.
Let me know.
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Do you have a pin assignment?
1 - 2 - 3 - 4
or
A - B - C - D
or
S - F - L - P
You can hook this up without a computer simply by using an alternator charge light.
Let me know.
IM not sure, how would I tell?
I found this (http://www.ebay.com/itm/Delphi-1998-2002-GM-LS1-Camaro-Firebird-Alternator-Harness-Plug-Pigtail-12162144/231015101608?_trksid=p2047675.m1850&_trkparms=aid%3D222002%26algo%3DSIC.FIT%26ao%3D1%26asc%3D18348%26meid%3D2023731967179541432%26pid%3D100011%26prg%3D8402%26rk%3D1%26rkt%3D5%26sd%3D331044932751%26 (http://www.ebay.com/itm/Delphi-1998-2002-GM-LS1-Camaro-Firebird-Alternator-Harness-Plug-Pigtail-12162144/231015101608?_trksid=p2047675.m1850&_trkparms=aid%3D222002%26algo%3DSIC.FIT%26ao%3D1%26asc%3D18348%26meid%3D2023731967179541432%26pid%3D100011%26prg%3D8402%26rk%3D1%26rkt%3D5%26sd%3D331044932751%26) ) but not sure if it will fit this alternator.
If i need to buy another alternator that matches the plug thats fine, I just don't know if they mount different since I have a low alternator bracket.
And here is a couple pictures of the plug that is on the harness...
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Look at the plug. See the "S-F-L-P" on it? What year is the engine? What year is the wiring loom? What year is the alternator? Thanks
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Ok I see it now.... I think I have it figured out. I went to o'reilly's and we pulled the same alternator off the shelf and ordered a matching plug for it. In the picture the plug only has 1 wire coming out which should hook up to the same wire that was on the wrong plug ::study...
Fingers crossed ::counfused I will update tomorrow when it comes in and I test it! Thanks for all the comments and help ::rocker
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If you have a CS130 alternator the L terminal should go to a charge light on your dash.
One side of this bulb is connected to switched/Ignition 12V+ and the other side of the bulb is connected to the L terminal.
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OK, USMC, try this diagram for the wiring. This is for a Grand Prix 2005 Vin#1. This schematic came from Autozone's website. All you have to do is register, Log On, click on Vehicle Repair Guides, Wiring Diagrams, scroll down to Starting & Charging Systems (year) and the diagrams will load. ::thumbup
Jim