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Author Topic: Wiring Question  (Read 32501 times)

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Offline amxtra

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Wiring Question
« on: August 08, 2013, 04:28:42 PM »
  Question for those that have done this, I have an 87 TC harness would I be correct in guessing that all I have to do is start at the PCM connector and peel all related wires from the TC harness ?
 Or is there more to it that Im missing ?
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Offline OhSix9

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Re: Wiring Question
« Reply #1 on: August 08, 2013, 09:05:23 PM »
yup  . get an la3 pinout and you can diet the harness while your at it. there is a connector for the engine section.
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Offline fast64ranchero

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Re: Wiring Question
« Reply #2 on: September 06, 2013, 01:38:36 PM »
The 87 and 88 harness sucks! it has way more stuff incorperated into it then earlier years, It can be used (I did a 87 harness), just way more work to make it clean. Do you have the wiring diagrams? you really only need about 15 wires to make things work, if i remember right 21 if you want the CEL, premium fuel switch and diag wire...  Just me, but if i did it again, I pay the way over priced $450 for a new harness, or find a Merkur harness...
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Offline amxtra

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Re: Wiring Question
« Reply #3 on: September 07, 2013, 05:30:13 PM »
  I have what I have been able to find for wiring diagrams, I think most if not all of it, but haven't found a terminal pinout.
Since I have the 87 harness and Im .... frugal... going to use it. Trying to keep the price on this project down, well.. for now anyway.
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Offline OhSix9

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Re: Wiring Question
« Reply #4 on: September 08, 2013, 04:13:42 AM »
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Modest beginnings start with the single blow of a horn man..    Now when you get through with this thing every dickhead in the world is gonna wanna own it.   Do you know anything at all about the internal combustion engine?

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Offline fast64ranchero

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Re: Wiring Question
« Reply #5 on: September 13, 2013, 10:34:20 AM »
Look at this thread, it has all the wiring links I used
http://www.fordpinto.com/off-topic-general/turbo-coupe/msg118597/#msg118597
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Offline Wittsend

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Re: Wiring Question
« Reply #6 on: September 13, 2013, 12:04:10 PM »
They say a picture is worth a thousand words.  I used the '88 TC harness and steering column.  I wanted to retain the fuse box, relay box, charging system, steering column controls etc.. Perhaps it wasn't the best idea. I spent DAYS dissecting out the unnecessary wires.  In the end I had about 20 wires I was "unsure" of and they still hang in a coiled bunch (Update, I just removed them today! Most were ride control, oil pan level, washer level, or wires that ran to connector and stopped on the other side).   I also had long running issues that I only recently resolved by "wiring around" a problem.

I don't know which way to tell you to go, but I wouldn't necessarily endorse the '87-'88 harness.

Tom
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Offline OhSix9

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Re: Wiring Question
« Reply #7 on: September 13, 2013, 06:13:53 PM »
you took the complicated route by using the whole car harness.  if you take the engine portion of the harness from the ecu out and clip every wire but the ones indicated on the pinout diagram you can strip away all the crap and be left with an la3 compatible ( no rewiring of a pe harness to make the la work)  engine only harness..
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Modest beginnings start with the single blow of a horn man..    Now when you get through with this thing every dickhead in the world is gonna wanna own it.   Do you know anything at all about the internal combustion engine?

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Offline Wittsend

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Re: Wiring Question
« Reply #8 on: September 14, 2013, 11:01:16 PM »
Well.., I didn't used the WHOLE harness. But yes, I did retain the wiring for the items listed in my post above.

AMXTRA - I'm including a couple of pictures. Yes, I have additional wires (also noted in my post above). Retaining the T/C fuse block is also a significant contributor to the wire count. Plus, the original Pinto harness is wrapped in the plastic wire protector. But, I wanted you to have a general view of what you can possibly be dealing with. Note the abundance of wires and vacuum tree going over the master cylinder.  Also, the TFI is not mounted on the distributor, but a heat sink

Perhaps the best approach is to just focus on what you need (as OhSix9 stated) rather than what can be removed (like I did).  Each process has an appropriate purpose depending upon the application. Regardless, the intertwining of the wires in the '87-'88 harness will keep you busy either way.

Tom
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Offline amxtra

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Re: Wiring Question
« Reply #9 on: September 15, 2013, 10:37:04 AM »
  Yeah the wiring does look like a nightmare, but it comes back to the old saying.. How do you eat an elephant ?
One bite at a time.   I will start by trying to peel the engine harness out.
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