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Discussion Starter #1
67 Non tach

There is a 10 gauge wire that comes off the alternator and goes into a 3-way flat plug, then goes into the harness. There is a second 10 gauge wire that comes off the solenoid and goes into the harness.

Those two 10 gauge wires are fused together. Theres about 12" of wire on each lead I need to replace.

The 3-way plug between the alternator and harness needs to be replaced. The alternator harness comes with 1/2 the plug. I cant find a suitable plug to match it that either has a 10 gauge wire in it, or a plug that I can build myself.

I dont want to hardwire the leads, makes it a PITA when the alternator needs to be pulled.

Any ideas that will not look like ass?

If I dont solve this, I will cough up the $165 for a new engine bay harness, although thats a lot of coin because of one bad connector.
 

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I’ve got an old harness that I have been taking connectors off of. There is a 3 way plug on it that looks in good shape. Let me know if this will work for you and I’ll snip it off and send it to you.
E92B1E22-FEB1-41A4-9D07-3B10F3E28DC2.jpeg
 

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Discussion Starter #3
Thanks, but its the other side of that plug that I need. Thats the side that came on the new alt harness.
 

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Search for a user by the name of Midlife. He does wire harness repair and refurbishment for Mustangs. I'm certain he can help .

Sent from my SM-N960U using Tapatalk
 

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Discussion Starter #6
I can, but not a plug with a 10ga wire.
 

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Discussion Starter #8
Midlife doesnt do underhood harnesses. Im probably going to replace it. Im not going to half-ass it and just have problems down the road with it, especially with the charging system.
 

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This what you need. I have and underdash from a 67 Cougar I use for parts.
B5EB8245-B542-4D2A-8196-4FB60F8AEAD5.jpeg
 

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I was in the same position as you a couple months ago. I ended up buying a new harness as I Was looking and couldn’t find a plug with the larger wire size, and then a US made harness showed up on sale.
 

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still need a connector?
 

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Discussion Starter #12
I do.
 

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Midlife doesnt do underhood harnesses. Im probably going to replace it. Im not going to half-ass it and just have problems down the road with it, especially with the charging system.
His website shows he does, and also sells individual parts:

Harness Refurbishment:

1964.5 - 1973 Underdash:$175.00 *Core Charge: $50
1967-1973 Underdash Tach Conversion:$225.00 *Core Charge: $50
1964.5 - 1966 E-Switch harness only: $25.00
1964.5 - 1966 E-switch harness, switch $50.00
1967-1968 Dash Cluster harness: $50.00 *Core Charge: $25
1964.5 - 1973 Tail-Light: $50.00 *Core Charge: $25 No braiding
1964.5 - 1970 Headlamp Engine harness $75.00 *Core Charge: $25 No warranty
1971 - 1973 Headlamp Engine harness$100.00
*Core Charge: $35​
No warranty​
1971 - 1973 center console gauge harness
$50.00​
*Core Charge: $15​
1964.5 - 1966 Gauge/Alternator Feed $35.00 *Core Charge: $10 No warranty


Miscellaneous:

1969-1973 Accessory fuse extender $15.00
1969-1973 Circuit Card Replacement/Hard-wiring Dash Cluster $100.00
1969-1973 Aftermarket Cluster/Gauge Wiring $75.00
1969-1973 Headlamp Feed Re-pinning Connector: $50.00
1964.5 - 1966 Wiper Harness, if not part of
underdash refurbishment:
$25.00
Fuses $1.00 each
Connectors, plugs, pins, etc.: Call
 

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Have you thought about going a 3g alternator and ditching the factory crap? I did a pa 3g in mine. It was super easy to wire and bypassed the factory regulator and extra wires that are not needed.
 

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Not to disparage chapys, but PA Performance has their own pseudo external regulator, and internal regulator. The only problem with that is if you are out on the road someplace and it goes south on you, you can't go to the local auto parts store and get a replacement. I would get a Ford style 3G alternator with just the internal regulator. Once you rewire for it, you can easily replace it.
 

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Discussion Starter #17
I thought about the 3g route. So did a bunch of other people, there wasnt a single 3g alternator or harness in the entire JY.

Tahts a project for another day. My 1g is detailed and on the engine as well as a spare on the shelf.
 

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Plug with a foot of wire will mail tomorrow before work .

Mike
 

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Discussion Starter #19
Thankyou
 

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Threw in something extra for you . Should be there on Friday or Saturday
 
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