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Here is the "Headlight Relay Upgrade Harness Diagrams"

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http://www.jaderunner.com/Auto/240Z/Docs/daves_harness.doc

With the cooperation of Many people on classic Zcars.com, I have put together a couple of links that even the most novice skilled people can use to make, build or even repair a "headlight relay harness"

The link above has all the info on one site, the following links are the same but seperated for details that may have been lost in the process.

The complete wiring diagram that may be enlarged using the "expand" button on the lower right side of the picture.

http://www.classiczcars.com/forums/attachment.php?attachmentid=10552&d=1136682638

Below is the link to the beginning of the instructions before pictures were added to minimize the pages.

http://www.classiczcars.com/forums/attachment.php?attachmentid=10503&d=1135924571

This is the link to the pictures that go with the instruction above. It's in "PDF" form.

http://www.classiczcars.com/forums/attachment.php?attachmentid=10505&d=1135974151

This is the instructions without the complete harness diagram at the bottom.

http://www.classiczcars.com/forums/attachment.php?attachmentid=10525&d=1136242415

This is a link to "Daves possible parking light fix" forum that I'm working on

http://www.classiczcars.com/forums/showthread.php?p=157640&posted=1#post157640

Do what you will with the info above but it's everything I have at the moment. I WILL add to the instructions as soon as I get a chance.

Dave.

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Thanks... Dave. I just came in from the garage were I was starting to sort through the wiring to re-install since pulling it out for the restoration.

Sheesh.. Looks like fun.

I am going to make these. Makes no sense not to since I am doing a complete resto/mod.

Thanks for all your effort.

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if any one can figure out to keep this on the front page, I won't have to answer too many more questions on the matter.

Any takers?

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Consider this a vote to sticky the thread. You are a hero, man! Awesome job =)

I will be wiring these up myself. Should I expect to see a lighting improvement by virtue of making and installing the harnesses, or does this just allow me to easily install better lights? And if anyone wants to throw out a recommendation for some reasonably priced headlamps, please feel free.

-m

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No doubt, this would be excellent for tech articles. I wonder how we can convert the DOC file to HTML efficiently. Or, you can simply post the DOC to the thread so that it's pulled into the database (rather than a link to an outside site). I would like to see this one last forever.... it's such a good job! Actually, I can sticky this one...

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I'm lost or stupid, I looked but could not find it anywhere other than the fron page on the bottom in the "current forms area.

Oops. found it. It's above the front Zcar picture marked "Forums":stupid: :stupid: :stupid: :stupid: :stupid: :stupid:

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No doubt, this would be excellent for tech articles. I wonder how we can convert the DOC file to HTML efficiently. Or, you can simply post the DOC to the thread so that it's pulled into the database (rather than a link to an outside site). I would like to see this one last forever.... it's such a good job! Actually, I can sticky this one...

I will be out most of this week on business travel but will be happy to convert it to HTML upon my return, as well as host the associated images if need be. However, I think it makes more sense to host it all on this site in one place. I hosted it on my site to avoid the multiple posts for each update. I already tried a saving it to HTML from Word and it looked like crap so I'm going to have to do some hand editing. When done I can send it in a zip file if you have some way of hosting the images and displaying them inline.

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Consider this a vote to sticky the thread. You are a hero, man! Awesome job =)

I will be wiring these up myself. Should I expect to see a lighting improvement by virtue of making and installing the harnesses, or does this just allow me to easily install better lights? And if anyone wants to throw out a recommendation for some reasonably priced headlamps, please feel free.

-m

If your looking for confirmation on the improvements to your stock headlight power and output go to http://www.classiczcars.com/forums/showthread.php?t=14897&page=10

Look around and you'll find a couple of happy, compliment giving, satisfied people. Improved headlight output, Able to upgrade to hi power headlights without worry to the stock system, ease of instal, great precautionary measure towards the safety of your stock electrical switches and fuse box.

You should be happy with the results, Just take your time and don't skimp on the materials.

Dave.

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Looks good except for a goof on MY part. I need a (ga) after the "10" on the words under the battery. on the "overall diagram" picture.

Also, the relay diagram shown above the overall diagram was actually a "FIX" for the first original harness's that I made. They did not work properly on the 72 1/2' to late 73's. Thats why I made the "Universal Harness" that works with all 240Z's depicted in the "Overall Diagram"

just look at them and you'll see what I mean.

Dave.

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I'd like to thank Dave again for making the plans for this harness available to all. I keep looking at this plan, but I can't figure out where the 53 inches of 12/2 RV wire goes. Any help would be appreciated. Also, if anyone has found a good source for the OEM style 3-pin male and female plugs, please let us know.

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I'd like to thank Dave again for making the plans for this harness available to all. I keep looking at this plan, but I can't figure out where the 53 inches of 12/2 RV wire goes. Any help would be appreciated. Also, if anyone has found a good source for the OEM style 3-pin male and female plugs, please let us know.

53'' divided into 2 is 26 1/2". One half of the 53" (26 1/2) goes from the relay pack to the first headlight plug and the second half of the 53" goes from the right headlight plug to the left headlight plug.

Hope that helps, I keep meaning to finish those damn instructions. I'll get to it as soon as I can.

Dave.

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Will the harness you make for 1971 240Z for Motorsports work in a 1971 FairladyZ-L (RHD) car?

I spoke with Motorsports and they didn't know; suggested I ask you.

The Fairlady has a button on the end of the turn signal stalk which blinks the high-beam as a passing light. It sounds like a relay clicks on and off when the button is pressed.

MSA didn't know if this would continue to work with the relay harness installed, or if the harness would work.

Will it work plug-in or would further modifications be required?

Thank you!

I'm lost or stupid, I looked but could not find it anywhere other than the fron page on the bottom in the "current forms area.

Oops. found it. It's above the front Zcar picture marked "Forums":stupid: :stupid: :stupid: :stupid: :stupid: :stupid:

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Kerrigan, why don't you send Dave a PM? He might see your question sooner. Just a suggestion.

Cheers, Mike

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I've sold about 10 Headlight upgrade harnesses to RHD owners. The install is the same in the engine bay but you'll need to mount the relay pack using a different OEM hole because there's no VR on the left side (Of which to use the mounting screws)

All of the RHD owners claimed success in their install but none of them said anything about a passing button.

As long as the harness is flipped, the input connector is plugged in on the left side (instead of the right) and the grounds are the same bolts, etc, etc, There shouldn't be an issue.

I'm 99.99% positive that the output at the headlight plugs (in front of the radiator) should act the same, even with a passing button or switch) So I say go ahead and purchase the harness and install it. And please let me know if there's an issue and how the install goes.

Dave

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