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

Small case 3g wiring question.

  • Thread starter Thread starter Limp Fox
  • Start date Start date Sep 27, 2009
L

Limp Fox

New Member
Sep 2, 2009
31
0
0
Newmanstown PA
Sep 27, 2009
#1
  • Sep 27, 2009
  • #1
I want to know if I did my install correctly. I purchased a small case 3g wiring kit (complete with 4ga wiring and fuse block, connectors and plug) about a year ago and lost the instructions. I searched, but a lot of sites I seen weren't to clear so I figured I'd post. Below you can see a quick diagram of what I did.

Is the single White/Black wire which originally went to the D shape plug ran correctly? I figured I was supposed to cut the wire then run the harness side directly to the new plug and tape off the end coming from the D shape plug with electrical tape - making it a dead wire on the D shape plug side. I however seen a few pictures where ppl left it going into the D shape plug and ran the cut end to the plug.

Where the thick power wire goes on the back of the alt is that the only wire that goes there? I seen some people run the yellow wire from the D shape plug to there. If this is the correct way then I failed and need to fix it. If I did it incorrect do I cut it and run it from the harness side to the same power plug has the 4ga wire similar to how I did it with the black/white wire or do I run it from the D shap plug end?

Thanks a lot
Judd

 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
34
129
Sep 27, 2009
#2
  • Sep 27, 2009
  • #2
The regulator plug is the same on 2 and 3G alternators. There are 3 wires going to the regulator plug. Your diagram only has two wires coming from the connector plugged into the alt.

Simply stated, the stator needs to loop from the regulator terminal labeled S over to the single port on the alt case.
 
You must log in or register to reply here.

Similar threads

F
3G Alternator install question
  • fathead429
  • Oct 24, 2026
  • 1974 - 1978 Mustang II Talk & Tech
Replies
7
Views
245
1974 - 1978 Mustang II Talk & Tech Oct 25, 2026
LILCBRA
C
Electrical HELP! 1989 5.0 Stick, Voltage Bleed onto Ignition Trigger wire
  • ChickenDeluxe
  • May 14, 2026
  • Fox 5.0 Mustang Tech
Replies
7
Views
369
Fox 5.0 Mustang Tech May 24, 2026
ChickenDeluxe
C
G
Resolved Smoking Wiring Issue After GT40 Head Swap
  • Grapes
  • Aug 15, 2026
  • Fox 5.0 Mustang Tech
Replies
17
Views
561
Fox 5.0 Mustang Tech Aug 22, 2026
Grapes
G
Electrical Ron Francis Headlight / Alternator Harness
  • dan50
  • Apr 30, 2026
  • Fox 5.0 Mustang Tech
Replies
0
Views
324
Fox 5.0 Mustang Tech Apr 30, 2026
dan50
F
Electrical From scratch: alternator wiring
  • fox racer v2
  • Jun 23, 2025
  • Fox 5.0 Mustang Tech
Replies
0
Views
680
Fox 5.0 Mustang Tech Jun 23, 2025
fox racer v2
F
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?