RyuZ32

I spent last night and the better half of this morning going thoroughly through all 73 pages of the electrical section of this forum.. I have a 77 280Z made in 7/77. I just scored a slightly scuffed harness out of a 10/77 so a 78.. I acquired the Fuel Injection Relay that screws in near the battery, The ECU numbers were the same, will this harness go right in? All i found was the AFM didnt have Fuel Pump Points, but my pump is on a toggle switch anyways. All help will be greatly appreciated, and Ive spent my time searching and not finding clear answers so please no Flames about searching. Im an AVID user on 300ZXCLUB so im very familiar with the search function.

Since this is a swap in set up, can I run it without the 02 sensor?

I'm in the process of swapping my 77 280z to a 79 280zx harness/ECU. I have this plug and I'm not sure where it goes or what it's for? Any ideas and advice for the swap?

It was like this when I bought the car. I'll just mount it under that shelf bracket thing by the battery or something. Thanks for the help guys

Was in the midst of taking off emissions stuff, anyone know what this is for?

Here's my coil

With the ECU bolted down, I put the jumper on the negative of the coil, slapping it on a ground repeatedly with the key on made no noises or clicks with the injectors, that was the test for the ECU. Since it did get super hot before I imagine its pretty cooked, so I'm going to order a new ECU on Tuesday unless someone has a 77 spare laying around for an auto that works

By grounded I mean bolted down in its place

Stupid question....does the ECU have to be grounded for it to work?

Fuel lines are correct. It's odd to have fuel in the rails and not the cylinders... Not enough pressure to open injectors or something? How do you manually open then up?

What if I hooked the return and from lines for fuel backwards...would I have this issue?

Hard wired the pump. Firing like a trooper, getting fuel in the rail, not in the cylinders...ideas?

The relay in the pic was the seat belt one. Ok after hours and hours of searching through wires I traced the wire that runs to te fuel pump. The black is obviously the ground and the green with blue stripe is the power... I traced it through the car, there's no breaks, no exposed wire, cleaned te bullet connector... It has no power ever. Put a wire on te bullet connection then ran it to a white with a black stripe that has power when key is on, and. One when key is off..pump ran great! It's insane. Everythin has power and works except the fuel pump, and now my buzzer doesn't work which is ok with me

Yes, every single thing works except fuel pump.

Pic 1, was the ONLY relay on the inside (side) of that little shelf thing, i just didnt screw it back in. Pic 2, the fusible link was there in place to determine it works, and that link set up works fine until I get the actual link for it in the mail. Pic 3, No it has more than that, you just cant see the, in the pic. Pic 4, the relay on the OTHER side of the little shelf thing. Pic 5, not a clue. Pic 6, thats the BIG shiny relay box BEHIND the little shelf pretty much almost inside the fender. Did not see them on MSA btw. All I know is the pump gets no juice. With two wires from each terminal of the batt it runs loud as hell! Any light to be shed on this would be greatly appreciated. Debated a switch to turn the pump on and off but i prefer it to run by itself

Hers the second try of uploading pics

Headed to the house in about 20 minutes, hoping for a response soon guys! Gotta get some rest tonight for work, baby doctor and school tomm

Here's pics of the alt wiring, the egi relay, the three relay box things on that shelf type deal by the batt and the fusible links. And to show my car was a 7/77 production of that matters send some help my way guys. Be out here for about 2 hours or so. Call even if ya instantly see my issue 865-591-2701 (Thomas)

I never figured out what alternator I have, not to mention if it's wired correctly, I'll snap a pic on Sunday

I have not done the upgrade because they work. At the moment I'm tryin to see my engine at least run before I go upgrading and putting new stuff on. My son is about to be born (any day this month) and I would like to have my car done before he gets here since time with it will be limited after that

Rcb280z correct. I keep going over it and over it. The black and green wire goes into a wrapped harness, there is no plug. I rebuilt the motor now it doesn't start,(it turns over and that was more than two problems that were just overlooked) however no matter how many times I go over it I'm still getting nothing. I don't notice any variables just more stuff I gotta put back together once I figure it out. (carpet, seats and such)

That silver one underneath the driver side has already been replaced. It was 100$ at Nissan.

Is the "fuel pump relay" in that little black casing shelf thingy between the fusible links and te battery? If so is it supposed to be screwed down to anything to get a ground? By chance?? I'm sorry guys I'm just so lost and aggravated

I put my test light on everything I could find under the car and got nothing. (checked it on the positive terminal and it still works) however no power at pump what does that mean? It has no grounded power apparently

If this is the wire you guys are referring too, it does not go to a bullet connector, it goes into a wiring harness that goes down beside the passenger seat and branches out, chasing each wire end it goes to connections that are all plugged up.