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Electrical Need some Altenator wiring help please.

  • Thread starter Thread starter DanB93
  • Start date Start date Feb 3, 2025
  • Tags Tags
    altenator wiring harnass
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DanB93

15 Year Member
Apr 1, 2007
66
1
9
Feb 3, 2025
#1
  • Feb 3, 2025
  • #1
Hello so I am doing a replacement alternator in my 5.0. The replacement one came with a plug on the power and ground plug that was different from the car one. I ending up cutting both those new ends and the original car wire harness ends and have new conectors but then I walked away from project when the weather got too cold. So now that I’m ready to finish it and my markings on the cables have vanished. So the new alternator has 2 8 gage wires to plug into the black orange strip original battery leds. Both the original wire harness wire appear to be on the same path, in other words if I meter either one to the battery they both work so does it matter how I connect these to the alternator or does one of these 2 wires off the alternator provide different power? Thanks
 

General karthief

wonder how much it would cost to ship you a pair
5 Year Member
Aug 25, 2016
27,873
10,543
203
polk county florida
Feb 3, 2025
#2
  • Feb 3, 2025
  • #2
Give us some spects, like year/model and type of alt
Stock or up graded?
Thanks.......
 

AeroCoupe

lube between the nut and the face. I know my lubes
Founding Member
Oct 28, 2001
5,832
3,964
183
Claremore, OK
Feb 3, 2025
#3
  • Feb 3, 2025
  • #3
Where did you buy the alternator? Is it a 3G or 5G? If it came with instructions can you post them? Can you post pictures of the wiring that you have in the car? And who the hell doesn't provide the year of car???
 
C

Chuckster101

Member
Oct 3, 2024
32
5
18
St. Aug. Fl. 32084
Mar 30, 2025
#4
  • Mar 30, 2025
  • #4
I can tell ya the color to where it goes if it’s a sn95 130 amp . But that info is dangerous for the wrong year and amperage?
 

Mcmahst

5 Year Member
Jan 19, 2021
675
263
83
Laguna Woods CA, fort Mohave AZ
Mar 30, 2025
#5
  • Mar 30, 2025
  • #5
I think AeroCoupe scared him off with that difficult test question.
 
Reactions: AeroCoupe

General karthief

wonder how much it would cost to ship you a pair
5 Year Member
Aug 25, 2016
27,873
10,543
203
polk county florida
Mar 30, 2025
#6
  • Mar 30, 2025
  • #6
Mcmahst said:
I think AeroCoupe scared him off with that difficult test question.
Click to expand...
He's still put'n out the fire
 
Reactions: slow84lx and Mcmahst
R

Rcdgl

5 Year Member
Feb 19, 2018
313
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63
Apr 7, 2025
#7
  • Apr 7, 2025
  • #7
Need to post the year and what alts you are dealing with. If its a 3g or similar upgrade, googling will help. I am guessing you have an internally regulated alt.

IIrc the two wires are the charge wires to the battery, and used in lieu of one larger wire. There should be one exciter or turn on wire that tells the alt that the car is on and should be charging.
 
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