GT4 wiring diagram

Post 18

 

Thanks,

 

If it’s not Paul’s then I stand corrected.

 

Hi sltillim and GTHill

The screenshots on Posts 10 & 18 are positively mine and I agree with sltillim that IP is attached to them and other's work.
I only offered my version at the point where someone asked for a colored diagram after unsuccessful attempts to contact Paul.
I hope he is well and can keep serving the community here with his collection of diagrams.

 

Just in case: '76 GT4 US diagram available now; PM please me if interested
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I am now on the '77 GT4 North American diagram.

 

'77 GT4 North American Version available too - this is the last version I know of so might apply to the later models too.

 

Doing the '75 US version now, which is the oldest I know of for NA cars.

 

Could a kind owner of a '75 GT4 with an owner's manual please send a clear picture of the seat belt relay? Thank you!
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'74 Euro Version

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I am looking for a colored high resolution colored wiring diagram for my 1978 Ferrari 308 US Version. I have tried to reach Paul in the link above, but no success. If anyone could help me I would greatly appreciate it.

 

If you PM me I will share Paul's twin dizzy and some smaller areas blown up, given it has been so long. But I hope we hear from him and he's okay...

 

Thank you very much, I have PM ed you yesterday, hopefully you got it?

 

Thanks for remembering me. I was able to get one a few months ago. It was very helpful to my restoration shop. Now it’s framed as a piece of art!

 

sltillim - thx for the 1974 GT4 Wire Diagram, it will be a tremendous help. I am aiming for the moon, so if anyone has the 1978 Ferrari 308 North American Spec Wire Diagram in high resolution and color and want to share please let me know. Thank you all for being so kind and helpful!!

 

Sent you a PM would appreciate if you could also share this with me as well. I have tried contacting Paul and buy via the website the 1978 Ferrari 308 US Version Wiring Diagram but didn't manage

 

1975 308GTB diagram available now:
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Hi, this is a long shot... but by any chance were you able to get a wiring diagram for a 78 308 (US)?
I've been trying to hunt down a wiring issue on my 78 and have been looking for a wiring diagram.
THANK YOU!

 

No sorry, I am still searching for the 78 308 (US Spec) colored with high resolution. Please let me know if you have any luck. Thx!

 

I made a version starting with the diagram in the 308 GTB/GTS North American owner's manual (150/78). Full color, etc. PM me if interested.

 

Ok thank you, I will PM you!

 

PM Sent! @afterburner I want to learn how you made these diagrams.

 

It depends on what existing diagram is available. For the 308 one, I scanned the one in the NA 308 GTB/GTS owner's manual. Then I take that picture and size it to the final print size (20x30") in a CAD/CAM program. Once that is done, create the wiring lines, shapes, etc. using the program's tools. Color the wiring based on the tags in the original. At the end, the picture is deleted from the background leaving just the drawn diagram ready to be printed.

For the older models, 250 and 330 models, if a diagram is available, start with that. However, the older owner's manuals had crappy diagrams, B&W and small. So, a lot more work was needed with the existing diagram being just a start with everything drawn in the CAD/CAM program. Since very few of the wire colors were noted, I used information from my own cars or someone who owned one for the colors. In the case of some of the models, several versions were made using the basic diagram with options to add/delete portions according to the particular car version.

An example is the 330 GT diagram, there are 5 versions, Series 1, Interim (4HL/5 speed), Series 2/12 fuse, Series 2/14 fuse and Series 2/16 fuse. So, the buyer needs to provide a S/N or the number of fuses on his car's fuse panel. Here's an example from the 330 GT diagram:

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As you can see, quite detailed and each wire line color coded, even those with 2 colors like the water temperature and fan wires. Those wires took me a while to figure how to show them. They are actually 2 lines, one solid (yellow) and another a dashed black laid exactly on top of the yellow one. Since you can't print white wires, they are in a light gray as shown for the #20 wire. Note, each wire has an arrow denoting the direction that current is flowing. The text contains wording that is on that item in the car in addition to the item number as listed in a separate legend.

Many, many hours of work are in each diagram. Some diagrams like the one I made for my PF Coupe were done from scratch as there was no known Ferrari supplied diagram for that model. It turns out that the PF Cab used the same wiring harness, so a couple of owners have gotten one for their car. Two owners, after receiving a diagram, have ordered a second one to be framed and hung in their garage. One owner uses a framed version with a dry erase marker on the glass to follow wires or make notes. Then the marks can just be wiped off before the next project.

 

Thank you for this! Which CAD/CAM program are you using?

 

I use Microsoft Visio. Microsoft bought the company a long time ago and the product was targeted for the CAD/CAM audience at that time. However, since then, Microsoft has warped the product into a business tool under Office 365. It probably still has the same underpinning to be used for CAD/CAM in the current version, but I am using an old version.
The critical feature is that the objects are stored in vector form, so a drawing or an object can be resized without losing any resolution. It supports layers, so an object or group of objects can be put in a layer. Then that layer can be set to appear on the screen and/or printed. That is how the differences between versions of a car are maintained in a single diagram. An example is the difference between a Series 2 12 fuse and 14 fuse diagram is a layer that contains the extra 2 fuses and wiring for cars with power windows.