Zed Head

Different cars, for sure. The 120 is the one you want, apparently. I wonder which Ford used it.

There's a 120 and and a 121. The 121 says "Jetronic", the 120 doesn't. Wonder if diodes/resistors is the difference. I know that their typical 5 pin relays come in different flavors. Same basic functions, just some have a few extra parts inside. Usually they show it on the cover, but these don't. Edit - the 121 has 13 pins vs 11 for 120. Not sure how that affects things. Haven't studied the pin diagram. https://www.amazon.com/Bosch-0332514121-BOS0332514121/dp/B006NYJ328 https://www.amazon.com/Bosch-Automotive-0332514120-Relay/dp/B004Z0W1C6

Fundamental red 71. https://bringatrailer.com/listing/1971-datsun-240z-60-2/

There's actually three of them. Family operation. https://www.motormanfuelinjection.com/contact.html They might have a new version also. Never know. https://www.motormanfuelinjection.com/location.html

I think it's the same guy. The site shows that his focus is on the parts not the hype. When he put that web site together I think it was state of the art. Look at all of the information on it. Use the contact page. Call him up. It's probably a land line to a rotary phone. https://www.motormanfuelinjection.com/request-form.html

Just came across this one. Who knows what the innards look like. The problems don't show on the outside. https://www.ebay.com/itm/174753879999?hash=item28b02497bf:g:JK8AAOSwzOhgjcRl

I posted the wrong Motorman link. Need to fix it. I'd just go directly to his web site. Says $29.99 for the Bosch injectors. Bosch is good quality. His web site is prehistoric. But he has survived. https://www.motormanfuelinjection.com/NISSAN_FUEL_INJECTORS.html

When parts get scarce the stores mark things up higher. I'm pretty sure that many of them just buy from Rockauto and resell. The Datsun Garage part listing doesn't say "new". They look like these remans. Edit - I copied the wrong link here too. This is the right one. Very similar to Datsun Garage. https://www.ebay.com/itm/201509531117?_trkparms=aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D20200818143230%26meid%3D621deb4a130e45adb2d2f8e5e1c2cc31%26pid%3D101224%26rk%3D1%26rkt%3D5%26sd%3D201317301856%26itm%3D201509531117%26pmt%3D0%26noa%3D1%26pg%3D2047675%26algv%3DDefaultOrganic%26brand%3DNissan&_trksid=p2047675.c101224.m-1

I think the reality of aftermarket parts is that a cleaned, refurbished and tested OEM part is often better than a brand new aftermarket part. OEM parts are designed to last tens of thousands of miles. Aftermarket parts are as sketchy as reman OEM, I think. Worst is probably a reman aftermarket part. I think that all of the aftermarket parts come from the same few places. Standard is a big one. Don't spend big money from a big name shop just to find out it's a $45 Standard product that you could get from Rockauto. People like these Standard injectors. https://www.rockauto.com/en/catalog/nissan,1976,280z,2.8l+l6,1209226,fuel+&+air,fuel+injector,6224

I'd check eBay. Motorman is a reputable refurbisher. Been around a long time. https://www.motormanfuelinjection.com/NISSAN_FUEL_INJECTORS.html https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2499334.m570.l1313&_nkw=280z+fuel+injectors&_sacat=33554

Where do you see $450? The auto store injectors are pretty good. Looks like you can get them for under $60. $360 total. Still spendy. https://www.oreillyauto.com/search/v/a/6637/automotive-car-1978-nissan-280z?q=injectors

Here you go, with one old post. It was SteveJ, and maybe Captain Obvious before him. Not sure if EuroDat is in there or not. (The Share thing is not working right, try this one.) Just go to post #42, Share is messed up.

I have a vague memory of @EuroDat posting about this. You should put "Bosch relay" in your title. That will catch the eye of the people who know.

@Terrapin Z might have a used set. Or @zKars Anybody who's had a few Z's starts collecting. Stuff that they'll never use.

Any Z or ZX from 75 - 83 would work. Also the early Maximas with the L24E. And various Volkswagen Super Beetles. There's actually not a lot in the wrecking years anymore though. I think that I got lucky because the government was doing their cash for junkers program so a lot of Z's, ZX's, etc. ended up in the wrecking yards in my area.

Never mind. Probably wrong audience... Replacement...

Government is as government does. Still hard to tell who and what to believe. Even after all of the recent backlash the CDC still can't deliver a straight message. Check out these two recommendations, on there right now, same time. https://wwwnc.cdc.gov/travel/notices/covid-4/coronavirus-canada Key Information for Travelers to Canada Travelers should avoid all travel to Canada. Because of the current situation in Canada even fully vaccinated travelers may be at risk for getting and spreading COVID-19 variants and should avoid all travel to Canada. https://www.cdc.gov/coronavirus/2019-ncov/vaccines/fully-vaccinated.html Fully vaccinated people can resume activities without wearing a mask or physically distancing, except where required by federal, state, local, tribal, or territorial laws, rules, and regulations, including local business and workplace guidance.

They might be 300Zx injectors. But they're definitely not 280Z or 280ZX injectors. There's no barb on the inlet and the seal on the intake end is wrong. That's the design that came after the 280ZX style. Not worth much. You can usually get wrecking yard injectors for about $5 each. Plus if those have been sitting out for a while they might be rusty inside. Look for numbers molded in to the plastic if you want to figure out what they came from.

That's awesome. Try some other songs and see what happens. Sounds like you have voice activated youtube search now.

I should add that if you're trying to figure out the wiring diagrams and thinking "man, this is really difficult" you're not alone. My eyeballs started getting sore trying to follow the various traces around the page, and jumping across the connection points. But if you take the time and put the effort in you'll find that it gets easier and you can solve a lot of your problems just by studying the drawings. For what it's worth.

Sorry dylancorrea, I was right with my first picture but got distracted by the parts you were holding in your hand. My mistake. I had you on a wild goose chase. cgsheen1 is right. Here is that first drawing that I should have left in. Run a switch to ground for the Red with Black stripe (RB) and you have low beam. Do the same for Red with White stripe (RW) and you have high beam. "E" is ground. The colors I'm talking about are from the main harness. Always good to use the diagram, because Nissan used different colors on the sub-harnesses. Sorry about that.

The white with red comes from a fusible link. The red wire feeds the fuse box. That's a link and two fuses that could be blown. Meter, meter, meter, test light.... check, check, check, know.

They're the right colors. See if they go to the places the wiring diagram shows. Use a meter and check continuity back to the fuse box. Use an inline fuse if you're not positive. If you're wrong or there's already a short in the system the fuse will blow and you can refigure with intact wires. https://www.autozone.com/electrical-and-lighting/fuse-and-accessories/bussmann-atc-fuse-holder-with-cover/32415_0_0?spps.s=1183&cmpid=LIA:US:EN:AD:NL:1000000:ELC:71700000060662503&gclid=Cj0KCQjwhr2FBhDbARIsACjwLo1sKXm9FtB6ZFhnSgkynIx14jjztRx1TNquFBWnbEfNCHmbqdQdaBYaAipQEALw_wcB&gclsrc=aw.ds

Use a fused circuit to be sure you don't burn any wires if you get them wrong. Cheap insurance.

The wiring diagram is more confusing that a person would think. The headlight power comes in to the switch on white with red stripe then heads off to the fuse box on red. Two separate wires. But the running light power comes in on an already fused circuit. You can't just ground a wire at the switch to power the headlights. The headlights are grounded through the dimmer switch at the base of the turn signal stalk. Here's the headlights. Connect those two wires and the headlights will have power. The turn signal stalk will control high or low.