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> 914 GT 3.6 Ferrari Build, - Wiring underway!
Shivers
post Dec 30 2024, 12:10 PM
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Nice car. Looks like you have the rainbow spaghetti maker
Working great now. My word.
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TC 914-8
post Dec 31 2024, 08:44 AM
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[quote name='tygaboy' date='Dec 29 2024, 08:25 AM' post='3183759']
Wiring, continued. At least I get to drill some holes and mount the connectors.
There have been a few distractions around The Red Barn that kept me from the build: this Cayman GTS 4.0 followed me home and my wife said we could keep it!
OK, OK so we ordered it a while back and picked it up on 12/27.
And I can now safely state that all the review videos on these things are true. It is wonderful - and I can't rev it over 4k rpm yet!

Wow Chris !!! congratulations on your new Cayman GTS !!! Hope it doesn’t distract you from your day job (IMG:style_emoticons/default/sawzall-smiley.gif) (IMG:style_emoticons/default/driving.gif)
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tygaboy
post Jan 23 2025, 06:55 PM
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Back on the wiring after some other, short-term projects. Here's the first of the engine-side harness runs with the lengths rough trimmed. You can see the candy cane mock up that I use to set the base lengths of each circuit. Connections are end-to-end tested as I go and everything shown here is working as planned.
I needed to order a few additional bits that are due to arrive tomorrow so I should be good to complete the engine harness wiring in the next week or so.


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bkrantz
post Jan 23 2025, 09:14 PM
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That's a few more wires than in a Model T.
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Dion
post Jan 24 2025, 08:14 AM
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Congrats on the Cayman Chris. Looks awesome. Keep the vids coming. Always learning something. (IMG:style_emoticons/default/beerchug.gif)
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Cairo94507
post Jan 24 2025, 08:23 AM
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(IMG:style_emoticons/default/popcorn[1].gif) (IMG:style_emoticons/default/beerchug.gif)
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tygaboy
post Jan 24 2025, 09:38 AM
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QUOTE(Dion @ Jan 24 2025, 06:14 AM) *

Congrats on the Cayman Chris. Looks awesome. Keep the vids coming. Always learning something. (IMG:style_emoticons/default/beerchug.gif)

@Dion - Thanks Dion! Gotta say, the Cayman is everthing the reviewers say it is. Driving it has been a contributing factor to the slow down on this build!
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Superhawk996
post Jan 24 2025, 12:31 PM
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I apologize if I’ve missed it in videos or other posts - what software (if any) are you using for wiring diagram and keeping track of circuit pin outs?
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tygaboy
post Jan 24 2025, 02:53 PM
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QUOTE(Superhawk996 @ Jan 24 2025, 10:31 AM) *

I apologize if I’ve missed it in videos or other posts - what software (if any) are you using for wiring diagram and keeping track of circuit pin outs?

@Superhawk996 - Haltech does a great job providing easy access to the needed info. Beyond the expected generic wiring schematics, the ECU has a built-in I/O (input/output) report capability. Once you've set up which pins do what (outside of the hard coded stuff like ignition, injection, O2, etc.) you can generate a report. I find this REALLY handy when I'm building the harness as I can reference not just a pin # but an easy way to double check I'm working with the correct wire.
Then, for the specifics of my build, I simply created a spreadsheet to document the connections from the ECU to the bulk head.
Add up all these references and I have everything I need. And pretty much anyone who's done even a little wiring could look at all this and be able to understand it.


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ClayPerrine
post Jan 24 2025, 03:49 PM
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Looks like you forgot the yellow wire to the starter. (IMG:style_emoticons/default/poke.gif)
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technicalninja
post Jan 24 2025, 04:52 PM
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QUOTE(tygaboy @ Jan 24 2025, 02:53 PM) *

QUOTE(Superhawk996 @ Jan 24 2025, 10:31 AM) *

I apologize if I’ve missed it in videos or other posts - what software (if any) are you using for wiring diagram and keeping track of circuit pin outs?

@Superhawk996 - Haltech does a great job providing easy access to the needed info. Beyond the expected generic wiring schematics, the ECU has a built-in I/O (input/output) report capability. Once you've set up which pins do what (outside of the hard coded stuff like ignition, injection, O2, etc.) you can generate a report. I find this REALLY handy when I'm building the harness as I can reference not just a pin # but an easy way to double check I'm working with the correct wire.
Then, for the specifics of my build, I simply created a spreadsheet to document the connections from the ECU to the bulk head.
Add up all these references and I have everything I need. And pretty much anyone who's done even a little wiring could look at all this and be able to understand it.


Factory service manuals should be like that!
Super nice documentation!

Make DAMN sure to print hard copies occasionally.

If you have the information outside of digital storage, then you NEVER have a problem with the digital stuff.

If it's exclusively on digital...
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tygaboy
post Jan 24 2025, 07:22 PM
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QUOTE(ClayPerrine @ Jan 24 2025, 01:49 PM) *

Looks like you forgot the yellow wire to the starter. (IMG:style_emoticons/default/poke.gif)

@ClayPerrine Clay, You need to give me a little more credit. (IMG:style_emoticons/default/smile.gif) The wire to the starter is unlabeled in the current doc. It's one of the 12 ga, 25A wires. The other unlabeled 25A power wires are for the H2O pump, the coils and the injectors.
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tygaboy
post Jan 24 2025, 07:25 PM
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QUOTE(technicalninja @ Jan 24 2025, 02:52 PM) *


Make DAMN sure to print hard copies occasionally.
If you have the information outside of digital storage, then you NEVER have a problem with the digital stuff.

If it's exclusively on digital...

@technicalninja - Yep, I print a copy or two of everything for the "user manual". Imagine the next person who works on this thing: (IMG:style_emoticons/default/confused24.gif) (IMG:style_emoticons/default/blink.gif)
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ClayPerrine
post Jan 24 2025, 07:47 PM
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If you really want it to be Ferrari authentic, the wiring diagrams need to be hand drawn in pencil, and labeled in Italian. Then they need to not match the car. That's how the Ferrari factory did it in the 308 I worked on years ago.

Oh.. and that starter wire needs to change color and gauge 3 times between the ignition switch and the starter. And it has to have a cold solder joint in it too.
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technicalninja
post Jan 24 2025, 10:53 PM
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I was one of the last factory "authorized" Fiat technicians in the early 80's when they were getting the HELL out of the United States...

The "Authorization" included a Catholic like Blessing of the cross on your body.

Every bit as disturbing as it sounds, creepy as shit...

Ninja proverb: (IMG:style_emoticons/default/ninja.gif)

The wire color actually installed in the harness was directly dependent on how much wine Luigi had the night before.

I learned to read wiring diagrams on incorrect diagrams in another language and possibly mislabeled from a completely different model...

When they look like Tygaboy's stuff 95% of that battle is AVOIDED!
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Superhawk996
post Jan 25 2025, 12:00 AM
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Very slick. Thank you for sharing that. (IMG:style_emoticons/default/beerchug.gif)
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KSCarrera
post Jan 25 2025, 04:40 AM
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A nice aside is that the 4.0-litre Caymans are built at Osnabrück where our beloved 914s were assembled... Karmann is very proud of their links with Porsche and have an example of every car they've built in their factory museum.
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tygaboy
post Feb 6 2025, 06:41 PM
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Making progress. I fabbed a recessed bulkhead connector panel to create more space for the harness. Then it was work up a pass-through for the 12v feeds for the ECU and the power distributon module. All the panels are just set in place so things aren't positioned exactly as they will be.
I'll be making a cover for all this that'll get upholstered and hide everyting.


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East coaster
post Feb 7 2025, 05:54 AM
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Nice and clean, I like it. I’m sure you’ll be glad to move on from wiring, I know I was. It does seem fitting to put the proper amount of attention on the pasta in this Italian dish!
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Lof8
post Feb 7 2025, 07:18 AM
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Looking real nice!
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