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Author Topic: 1977 pinto x 2  (Read 18006 times)

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Offline alwaysFlOoReD

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1977 pinto x 2
« on: September 10, 2023, 02:57:54 PM »
Hi. I recently picked up a beat 77 pinto coupe to put a built 2.3 motor into. The motor I got in trade for some construction work. Apparently the motor was built for salt flats racing in an early 90s Ranger. The pinto is in pretty rough shape, no motor or gas tank but that wouldn't matter anyway. The original 3-speed auto is still in the car. While loading, the rear bumper was pulled off...😭. Guess I get to learn aluminum welding... This particular pinto is on the back burner.

The 2nd pinto is in much better shape. It has the 2.8l/auto. Unfortunately the magic smoke got away. I'm not sure if I want to try replacing short sections of wire, or rob the harness from the other pinto. I'm leaning to using the full harness, reason being i can check all connectors for being loose, which i suspect caused the magic smoke to leave. So.... can anyone tell me how to remove the wiring harness? It looks like there isn't a connector at the firewall. Do I need to disconnect everything under the dash?


Offline rob289c

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Re: 1977 pinto x 2
« Reply #1 on: September 10, 2023, 05:09:09 PM »
Follow the bundle where it goes through the firewall.  Under the dash are (I think) two connectors that will separate the under hood harness from the under dash harness.  You will not have to remove the under-dash wiring.  Just un-do the connectors.  If I get a few free minutes I will snap a pick or two of the connectors.  My under-hood harness isn't in a real accessible spot at the moment but will try you get pics of that too. 
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Offline alwaysFlOoReD

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Re: 1977 pinto x 2
« Reply #2 on: September 10, 2023, 08:20:29 PM »
Good to know. Thanks.

Offline rob289c

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Re: 1977 pinto x 2
« Reply #3 on: September 12, 2023, 01:39:11 PM »
First pic is the feed from under the hood to under the dash.  The big grommet goes through the firewall.  THe second pic are the two under dash connectors that correspond to the under hood feeds.  Hope this helps.
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Offline alwaysFlOoReD

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Re: 1977 pinto x 2
« Reply #4 on: September 24, 2023, 08:34:04 PM »
Thanks both of you for the tips, I was able to re and re the wiring. Had a problem with the duraspark module but finally got it.
Unfortunately found some serious rot on drivers floor and firewall.
Will be draining gas tank next and see if it fires with new gas.

Offline rob289c

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Re: 1977 pinto x 2
« Reply #5 on: September 25, 2023, 02:27:28 PM »
Keep working on it and post your results so we can all learn from each others' struggles.
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Offline alwaysFlOoReD

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Re: 1977 pinto x 2
« Reply #6 on: October 13, 2023, 09:43:13 PM »
3rd time trying to post to my own thread...
I ran into a snag with the wiring to the 2.8l alternator. The replacement harness came from a 2.3l engine, and the connection is different as well one wire is significantly bigger. I'm doing some research but any advice is welcome.

1st and last pics 2.8.
Middle two pics 2.3.


Offline rob289c

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Re: 1977 pinto x 2
« Reply #7 on: October 14, 2023, 05:09:27 AM »
When I go out to the shop I will look to see what mine looks like.  1980, 2.3.
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Offline alwaysFlOoReD

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Re: 1977 pinto x 2
« Reply #8 on: February 11, 2024, 06:05:46 PM »
So I was stymied at the alternator wiring last time I was looking at it. I couldn't figure out why the plug at the alternator wasn't matching with any plugs in the wiring harness. Today I took another look. It seems when I put in the new harness pulled from a 2.3 engine car, I didn't look close enough. Best guess is the 2.3 engine has the alternator on the drivers side compared to the 2.8 on the passenger side, and I didn't have a 2.3 engine with an alternator to compare to the 2.8 in the car. So now I may have to reroute the wiring harness, or extend the wires from the alternator plug to reach to the plug on the drivers side. Which is what I think will be easiest... Going to look a little closer after supper.

Offline alwaysFlOoReD

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Re: 1977 pinto x 2
« Reply #9 on: February 15, 2024, 11:51:58 AM »
I'm having problems finding the connector ends I need. Anyone have a source? I've tried a couple local parts places and rock auto and eBay. Its the end of the short alternator harness. I already have a new alternator end. I want to build a short extension harness that will use a female and male end like pictured so I don't molest the original harness.


Offline rob289c

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Re: 1977 pinto x 2
« Reply #10 on: February 15, 2024, 05:40:37 PM »
There is an old, closed junkyard that is about 30 miles from me that has a 79 wagon that may have what you are looking for.  It's hard to get access and the owner is really old and had open heart surgery.  I will see if I can get access and see if that connecter is available.  It might be a while as I work out of state and not home too much these days.  It may be Spring before I get a chance to scout it out. 
rob289c

Offline alwaysFlOoReD

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Re: 1977 pinto x 2
« Reply #11 on: February 15, 2024, 09:56:23 PM »
Cool. Thanks. For now I'll make an extension using spade connectors. That should get me by until I find the correct plugs, or you find them. I have one old engine buried in snow and ice that may have the correct ends, but I haven't had the time or good enough weather to go look.