• Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech

Need help with wiring alternator from scratch on my 66

  • Thread starter Thread starter krallman
  • Start date Start date May 2, 2007
K

krallman

New Member
Mar 3, 2006
96
0
0
Hurricane, WV
May 2, 2007
#1
  • May 2, 2007
  • #1
I need help on wiring my alternator on my 66 289. From the back of the alt. to wherever this crap goes.
 

Pbum5

Member
Oct 27, 2004
515
0
17
Minneapolis, MN
May 2, 2007
#2
  • May 2, 2007
  • #2
Buy a Alt. replacement harness and make your life eaiser.
 
G

gjz30075

Member
Aug 30, 2004
250
0
17
Roswell, Ga
May 2, 2007
#3
  • May 2, 2007
  • #3
Does this help?
 

Attachments

  • IMAG0002.webp
    32.4 KB · Views: 206
K

krallman

New Member
Mar 3, 2006
96
0
0
Hurricane, WV
May 2, 2007
#4
  • May 2, 2007
  • #4
yeah i would but there isnt a harness in this car. Its bare bones, no lights, anything. Just what it takes to start and run and charge.
 

Tim65GT

Active Member
Feb 24, 2004
1,149
2
39
West Texas
May 2, 2007
#5
  • May 2, 2007
  • #5
Extracted this from here:

http://www.themustangshop.com/resources.cfm

 

Rusty67

20+ Year Stangneter
Dec 3, 2002
3,749
37
109
LA, CA
May 2, 2007
#6
  • May 2, 2007
  • #6
If you are going to do this from scratch I would sugest that you upgrade to a 3g alternator now instead of later. Also, when you DO put head lights in, wire in relays for the them instead of having the power run through the light switch.
 
K

krallman

New Member
Mar 3, 2006
96
0
0
Hurricane, WV
May 2, 2007
#7
  • May 2, 2007
  • #7
the pics help, but lol its for my race car so i dont need lights or anyother thing. Didn't the taurus or something come with a 3g alternator. Wheres the best place to get one?
 

Rusty67

20+ Year Stangneter
Dec 3, 2002
3,749
37
109
LA, CA
May 3, 2007
#8
  • May 3, 2007
  • #8
What kind of race car are you building ? You wouldn't even need an alternator for a drag only car....
 

Tim65GT

Active Member
Feb 24, 2004
1,149
2
39
West Texas
May 3, 2007
#9
  • May 3, 2007
  • #9
I got mine from a 94 Mustang GT for $45. New, they are over $200

It bolted right in. I had to change the pulley, because I'm still running V-grooves. You don't use the external fan, 'cause the 3G has an internal fan.

If you get one from a Taurus, more than likely you'll have to modify the mounting bracket as they have 8 1/2" between mounting holes.

Here a site where someone installed one in a '80s Stang:

http://www.racesystems.com/3gproj/index.htm

And here is a helpful guide:

 
You must log in or register to reply here.

Similar threads

Alternator not charging
  • SchwarzStock
  • Jul 6, 2026
  • 1965 - 1973 Classic Mustangs -General/Talk-
Replies
2
Views
79
1965 - 1973 Classic Mustangs -General/Talk- Jul 19, 2026
SchwarzStock
A
Resolved Electrical Help Please
  • Alabama
  • Jan 22, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
2
Views
284
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jan 22, 2026
AeroCoupe
Electrical Ron Francis Headlight / Alternator Harness
  • dan50
  • Apr 30, 2026
  • Fox 5.0 Mustang Tech
Replies
0
Views
221
Fox 5.0 Mustang Tech Apr 30, 2026
dan50
J
Power Wire Upgrade Question
  • jhaling
  • Dec 21, 2025
  • SN95 4.6L Mustang Tech
Replies
2
Views
255
SN95 4.6L Mustang Tech Mar 23, 2026
Noobz347
Big Posi and Neg wire from Starter to Battery and Alt wires..........
  • from6to8
  • Feb 9, 2026
  • 1994 - 1995 Specific Tech
Replies
1
Views
217
1994 - 1995 Specific Tech Feb 9, 2026
AeroCoupe
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific 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?