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wal280z

77 280Z color wiring diagram

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I apologize for the delay - just started a new job and other life happenings derailed my reply with revisions.

Attached is Rev J, 1/19/13

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Hi Wayne,

Really appreciate your work on this and everyones input. Cant wait to print it on our plotter tomorrow and hang it up in the garage.

Chas

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post-27196-1415082241087_thumb.jpgAlmost done with our '78 California 280Z restore; this diagram should help clear up some confusion. My wife learned to drive on this car 35 years ago!:cool:

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I've turned up a few issues with the 77 color wiring diagram:

a) Hazard Switch Illumination Lamp Missing

B) Defroster Relay Internal Short

c) Ground Connection Missing

a) Hazard Switch Illumination Lamp Missing - The hazard switch includes an internal illumination lamp, but that lamp did not make it to the color wiring diagram. Here's a snippet from the FSM showing how they represented the bulb:

hazardfix2_zpsdc104891.jpg

That works, but I find it a little confusing because of the implication that the connections to the bulb are affected by the ON-OFF switch position (which they are not). So, while simply adding the bulb to the color diagram just like the original FSM would work, I would humbly submit that it would be better represented by something like the below:

hazardfix_zpsc33bbc81.jpg

B) Defroster Relay Internal Short - There is an internal shorting connection shown on the defroster relay. Simple fix as shown below:

defrostfix1_zps7b31053e.jpg

c) Ground Connection Missing - There is a bunch of items that need a ground connection in order to function, but do not have one. Again, simple fix as shown below:

groundfix2_zps36c83a5c.jpg

This diagram is such a lifesaver (or at least a carsaver)! Can we get this post as a sticky?

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Hi Wayne, Awesome. Thanks for the help!

Out of curiosity while I got you here... There is a device on the dwg called the "Timer Unit Belt Warning". It is located to the left of the fuseblock and is near the new ground you just added. You have all the connections to it listed as US only, but the 77 FSM that I have makes no distinction for that module based on vehicle destination location.

So, is there another document somewhere that lists that module as USA only?

Thanks again!!

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I just did the internally regulated alternator modification and as a side benefit of doing that work, I now know the charging systems inside and out. Armed with that dubious knowledge, I discovered a mistake on the 77 color wiring diagram.

Inside the voltage reglulator, some of the components are misplaced:

colorfixesK_zps0e7bc384.jpg

Not sure it's enough to warrant revision "L" or save it until there's more, but if I didn't write it down, I was going to forget!

This wiring diagram is better than sliced bread. Way better! :cool:

Edited by Captain Obvious
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I noticed a crossed wire in the Illumination circuit for the Water temperature/Oil pressure gauge a while back. Didnt think it was worth mentioning, but if there is a revision, then it can be added.

This colour wiring diagram is truly awsome. Thanks for all the effort Wayne.

I printed it on an extended A1 format and it hangs on the wall of my garage. So much better than the FSM.

Chas

post-26512-14150829893361_thumb.jpg

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Captain & Chas... I've made the edits, attached is Revision 'L'.

Thank you both for the kind words and the skillful quality control![ATTACH=CONFIG]73723[/ATTACH]

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Here's the latest. It's Revision "M". It includes the two changes mentioned above (voltage regulator and illumination light in the Temp/Oil gauge):

1977 Color Wiring Diagram Version M.pdf

Wayne had asked for me to take a look at it and upload it if I got the chance. Never tried to attach a pdf before, so let's hope this works right!!

Thanks again Wayne!!

Edited by Captain Obvious
Uploaded newest version - M
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Maybe Mike can rename this thread “77 280Z colour wiring diagram” to avoid confusion with other years.

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And for anyone getting ready to print out a big copy of revision "M" to hang on their garage wall.... Don't do that right now.

There have been some recently discovered issues in Rev "M" and I believe there will be a Revision "N" coming out soon to fix those issues.

So if you can hold off for a little bit, do so!

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17 hours ago, wheee! said:

Maybe Mike can rename this thread “77 280Z colour wiring diagram” to avoid confusion with other years.

@Mike - It appears as though I cannot edit the title of this thread. Can you?

I was able to update the title in the download section, thank you for transferring 'ownership'

Thanks!

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2 hours ago, wal280z said:

@Mike - It appears as though I cannot edit the title of this thread. Can you?

I was able to update the title in the download section, thank you for transferring 'ownership'

Thanks!

No problem. I edited the topic and updated the link to the file download in your first message.  I also added a link to this thread from the download details.  Thanks for supporting the file and keeping it updated!

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