• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

3G Alternator Install: A How To

  • Thread starter Thread starter Roland69
  • Start date Start date Jul 3, 2006
Prev
  • 1
  • …
  • 6
  • 7
  • 8
First Prev 8 of 8

jrichker

StangNet's favorite TOOL
In Remembrance. Thank you for your contributions
Mar 10, 2000
27,512
2,813
234
Dublin GA
Nov 16, 2016
#141
  • Nov 16, 2016
  • #141
At1Maverick69 said:
Hey guys sorry if I'm asking a question that's been beaten to death already, but better safe than sorry. I guess my confusion comes from reading into the install too much and having several information sources. Question is, Has there been an update on how to tackle the wiring mod? I saw somewhere that the green/red wire on the regulator harness is then hooked up to the alternator's output post with the power wire.

Another thing is, on the white/black wire, I know it goes to the stator plug, can I just cut it from the regulator harness, so it just goes straight form that harness to the stator? that means the old power wire and the white/black wire with it gets taped up.

Again, sorry, I know some of my questions have been asked and answered a billion times.


Here's what I have so far
Click to expand...
Go back the very first page of this thread and go to the bottom of the page.

There you will see jrichker and a set of drawings and instructions that completely describe what you need to do.
 
Reactions: At1Maverick69

billison

I like tinted tail
15 Year Member
Feb 27, 2006
2,607
1,094
184
stl
Nov 21, 2016
#142
  • Nov 21, 2016
  • #142
It's honestly overwhelming until you see it in person. It's best to either get the harness off eBay or from the parts yard.

You need a big charge cable from the stud to the battery or + of solenoid .

Green wire goes to green wire on car.

Yellow goes to the stud

White/black gets plugged into the stator

I found that getting a full harness from a 90's Taurus is ideal. Everything is already set up, just splice the green wire and the rest is done. Even has a nice fused charge wire.
 

jrichker

StangNet's favorite TOOL
In Remembrance. Thank you for your contributions
Mar 10, 2000
27,512
2,813
234
Dublin GA
Nov 21, 2016
#143
  • Nov 21, 2016
  • #143
billison said:
It's honestly overwhelming until you see it in person. It's best to either get the harness off eBay or from the parts yard.

You need a big charge cable from the stud to the battery or + of solenoid .

Green wire goes to green wire on car.

Yellow goes to the stud

White/black gets plugged into the stator

I found that getting a full harness from a 90's Taurus is ideal. Everything is already set up, just splice the green wire and the rest is done. Even has a nice fused charge wire.
Click to expand...
Do you have any idea what gauge the charge wire is or how many amps the fuse is rated for?
 

billison

I like tinted tail
15 Year Member
Feb 27, 2006
2,607
1,094
184
stl
Nov 21, 2016
#144
  • Nov 21, 2016
  • #144
jrichker said:
Do you have any idea what gauge the charge wire is or how many amps the fuse is rated for?
Click to expand...
Not off the top of my head, but I can check when I get a chance. Honestly I discovered it kind of on accident one day, but I've done it on three cars that drove them each without issue.
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
Jan 4, 1985
43,050
21,218
234
Box behind Walmart
Feb 13, 2017
#145
  • Feb 13, 2017
  • #145
@jrichker

I think some of the image links are broken on the first post.
 
J

jasongt06

New Member
Jul 6, 2007
15
0
1
May 19, 2017
#146
  • May 19, 2017
  • #146
Just curious if you can use a stock 4g alternator for a Fox?
 
Last edited: May 19, 2017

Ron90LX

Member
Aug 4, 2019
16
7
13
Holyoke ma 01040
Aug 9, 2019
#147
  • Aug 9, 2019
  • #147
thanks to you jrichker i feel comfortable with trying to do this conversion for myself.. I have been reading a bunch of different posts about this or that, what to do what not to do. the picture diagrams are awesome! You put in some good work and time into this post and i just wanted to say thanks for help. I am far from a car mechanic, and i really want to figure out how to do some of the work for myself and guys like you with posts like this are fantastic
 
Prev
  • 1
  • …
  • 6
  • 7
  • 8
First Prev 8 of 8
You must log in or register to reply here.

Similar threads

F
Electrical From scratch: alternator wiring
  • fox racer v2
  • Jun 23, 2025
  • Fox 5.0 Mustang Tech
Replies
0
Views
568
Fox 5.0 Mustang Tech Jun 23, 2025
fox racer v2
F
B
1991 3g alternator not charging
  • BigShowJoe
  • May 12, 2024
  • Fox 5.0 Mustang Tech
  • 2
Replies
23
Views
3K
Fox 5.0 Mustang Tech Mar 30, 2025
Chuckster101
C
B
water pump installation questions
  • B0udreaux
  • Feb 5, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2
Replies
38
Views
2K
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Feb 28, 2026
General karthief
5
Hello Everyone !
  • 5150K
  • Jul 3, 2026
  • The Welcome Wagon
Replies
0
Views
72
The Welcome Wagon Jul 3, 2026
5150K
5
3g alternator with battery relocation question
  • DeathProof88
  • Nov 28, 2023
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
14
Views
2K
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Dec 4, 2023
AeroCoupe
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?