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

Wiring harness terminal ends

  • Thread starter Thread starter Dothang67
  • Start date Start date Dec 15, 2009

Dothang67

New Member
May 9, 2006
133
0
0
Dec 15, 2009
#1
  • Dec 15, 2009
  • #1
Im planning to rewire most of the car electrical circuits (ign, dash, headlights, taillights, horn, turn signals, heater, wiper and radio) using automotive color coded wire.
I have some questions for the ones that have done the project, which terminal ends must be preserved, if any? Or could i just rewire it using new electrical terminals?

Also I might install a 3G alt after this project, are there special modifications I need to address to leave the wiring suited for this alternator?

Thanks in advance.
 
2

2+2GT

10 Year Member
Apr 25, 2009
3,333
10
79
Southeastern Pennsylvania
Dec 15, 2009
#2
  • Dec 15, 2009
  • #2
Many of these are available, at least as pigtails. But why? Repair what you have. Or if it's disintegrating, the 67 harness is available new. Just repairing one can be a challenge, actually building one would take more time than working at McDonalds to earn money for a new harness.
 

Dothang67

New Member
May 9, 2006
133
0
0
Dec 15, 2009
#3
  • Dec 15, 2009
  • #3
I bet it is a challenge, but this cable i am getting is almost free, OEM quality. Another issue is i dont live in the US, so importing a harness, after fees and taxes, can get really pricey. I just need a good hobby for this vacations.

You say "many" are available, is there one that it isn't?
 

woodsnake

15 Year Member
Jan 16, 2007
1,352
15
69
Hicksville, NY
Dec 15, 2009
#4
  • Dec 15, 2009
  • #4
I understand you want to do it as part of the hobby, but you will be a lot happier either repairing the one you have, or just getting a new one.........
Where do you live? The world is getting smaller everyday....
 
2

2+2GT

10 Year Member
Apr 25, 2009
3,333
10
79
Southeastern Pennsylvania
Dec 15, 2009
#5
  • Dec 15, 2009
  • #5
Dothang67 said:
You say "many" are available, is there one that it isn't?
Click to expand...

Sure. You can get the single, double, triple, and quad connectors, and even the specail plug on the back of the ignition switch, but the firewall plugs, and the plastic connectors for the turn signal, taillight, etc., not so much.

By the time you get all this stuff together, you'd probably spend less importing them.

I'll get you some info.
 

Dothang67

New Member
May 9, 2006
133
0
0
Dec 15, 2009
#6
  • Dec 15, 2009
  • #6
Thanks for the info 2+2GT, i will definitively check a quote with them.

Im from Mexico, and indeed I could make a trip to El Paso, TX (which is the nearest US city) and buy it there, but Im getting very good quality cable. Cable used by automakers like Ford and GM for basicly nothing, I just need to drive there and pick it up. As for the connectors, the PO probably threw away most of them trying to make a rewiring with poor quality wires, not color coded, without a dedicated fuse block, and piled up all under the dash.
So my idea its just to make that previous attempt, a functional one, one that I can understand and repair if needed, i dont need concourse correct wiring and connectors, just something that works. Also I dont have enough money to spend in it, in my situation i might spend $20 bucks of gas and $30 bucks in ordinary connectors, wire loop and heat shrink. I know I might spend 3 weeks in it, but time is the one thing I have, I can't afford $200 in a wiring harness, plus at least $40 in shipping and another $30 in taxes, not now.

I appreciate the help guys, really.
 
2

2+2GT

10 Year Member
Apr 25, 2009
3,333
10
79
Southeastern Pennsylvania
Dec 15, 2009
#7
  • Dec 15, 2009
  • #7
I can appreciate trying to low-buck the job. Have you considered a used harness?
 

Dothang67

New Member
May 9, 2006
133
0
0
Dec 16, 2009
#8
  • Dec 16, 2009
  • #8
2+2GT said:
I can appreciate trying to low-buck the job. Have you considered a used harness?
Click to expand...

I haven't, you mean an original used harness?
 

tx65coupe

Active Member
Nov 29, 1999
1,551
1
37
Dec 16, 2009
#9
  • Dec 16, 2009
  • #9
I would think that it would not be an issue to get it shipped to Mexico from Mustangs Unlimited, or NPD, or CJ Pony etc. I would buy a new reproduction harness. The other way is just going to be a headache.
 
2

2+2GT

10 Year Member
Apr 25, 2009
3,333
10
79
Southeastern Pennsylvania
Dec 16, 2009
#10
  • Dec 16, 2009
  • #10
Dothang67 said:
I haven't, you mean an original used harness?
Click to expand...

Sure. A good clean original should be about half the cost of a new one. GN has used stuff, too.
 
S

suki243

Member
Dec 19, 2006
662
0
19
Southern California
Dec 16, 2009
#11
  • Dec 16, 2009
  • #11
Just my 2 cents. I also think that you should try maybe a generic harness like the EZ wire stuff. It is a learning experience when you install it.
If however, you're still fixed on doing it from scratch, The main thing i'd recommend, but not necessary, is changing your fuse box to a newer set of fuses. Those older fuses, from what I hear, are getting harder and harder to get.

As for your original question what to keep, you can essentially find all the connectors nowadays repro. the only one I had trouble with are the ones that go into and out of the firewall. Still can't find em so i just used the old ones. The other ones are the ones that connect into the light switch if you still want to keep the top, the trick with these are to find the female spade connectors that have a locking mechanism in them. you can find them at pepboys in the wiring section.
 
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
557
Fox 5.0 Mustang Tech Jun 23, 2025
fox racer v2
F
J
Help! 78 II has no power to any electrical except headlights and taillights and hazards.
  • JackH
  • Jan 8, 2024
  • 1974 - 1978 Mustang II Talk & Tech
  • 3 4 5
Replies
93
Views
12K
1974 - 1978 Mustang II Talk & Tech Mar 28, 2024
Noobz347
Electrical - 12v on a ground wire WTF?
  • 65-Fstbk
  • Apr 26, 2023
  • 1965 - 1973 Classic Mustangs -General/Talk-
Replies
2
Views
3K
1965 - 1973 Classic Mustangs -General/Talk- Apr 27, 2023
65-Fstbk
J
Progress Thread Family member 1989 GT- Backstory and updates
  • JRC99
  • Apr 19, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
15
Views
1K
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Oct 26, 2025
JRC99
J
83 Dash lites no workee....
  • limp
  • May 30, 2023
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2
Replies
22
Views
3K
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jun 5, 2023
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?