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Old 08-12-2019, 11:54 PM   #1
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Custom wiring harness

Working on building my own custom wiring harness for standalone ecu in race car. I want to do a proper job and not have a ton of splices everywhere.

So I'm looking for a source where I can buy the factory original connectors and crimp terminals for all the injectors, ignition, all the sensors, etc, all of it!
Where can I buy that?

I think I found sources for pigtails for most things, but that's not what I want. That will require splicing everything, that's what I'm trying to avoid.
The fewer splices and the fewer connections, the more reliable it will be.

Also, I guess it would be helpful to know how to identify the terminal types/part numbers?



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Old 08-13-2019, 12:08 AM   #2
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Please share your plans about car type and model year.

I researched a similar subject a few years ago and bookmarked this PDF.

This link helps you some, but not enough. Enjoy.

http://www.fordservicecontent.com/pu...torcatalog.pdf

Note: check out the contact-pin (terminal) release tools shown on Page-2
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Old 08-13-2019, 12:11 AM   #3
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Car is an '04 PZEV
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Old 08-13-2019, 12:15 AM   #4
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Quote:
Originally Posted by wedge905 View Post
Car is an '04 PZEV
Uhg. I'd hate to own that one. Uh, wait a second, that might be the one that... nvm.
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Old 08-13-2019, 12:16 AM   #5
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Uhg. I'd hate to own that one. Uh, wait a second, that might be the one that... nvm.
You can't say that, and then say "nvm". Explain yourself!
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Old 08-13-2019, 12:17 AM   #6
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Look at my handle? I own an 04 PZEV.
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Old 08-13-2019, 12:19 AM   #7
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Look at my handle? I own an 04 PZEV.
I'm selling the transmission from mine, if you want to swap in a manual.
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Old 08-13-2019, 12:34 AM   #8
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No thanks on the trans offer.

Here are some other FF Forum areas that you should check out or create a new post within based on your race car modifications. ->

Builds
https://www.focusfanatics.com/forum/...eral-showroom/

Duratec Performance
https://www.focusfanatics.com/forum/...nce-2003-2007/

ECU Tunes
https://www.focusfanatics.com/forum/focus-tuning-chat/

Brakes & Suspension
https://www.focusfanatics.com/forum/...-body-chassis/

Racing Discussion (sub-forums)
https://www.focusfanatics.com/forum/...ng-discussions

Gd Luck
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Old 08-13-2019, 12:53 AM   #9
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Whoops! I forgot to say the obvious...

You do not need a new standalone PCM/ECU (or wire harness) within your race car design UNLESS you have a unique (more expensive) design idea.

The stock PCM can deliver most race car needs, with a Tune, and other mods, and especially if talking about a 2004 Focus.
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Old 08-13-2019, 04:09 AM   #10
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The 'no splice' idea becomes rather witless once one realizes that there are many hidden splices in OEM harnesses underneath the wrapping.

There is absolutely zero reason why a competently done group of splices should lower reliability at ALL. It lowered points directly at incompetent work.
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