Fuel Pump Confusion

First, your picture didn't show up.

Second, the 280Z did not always use the oil pressure switch in the fuel injection. That only happened in the 78 model year. If you have the oil pressure sender that came with the car, look at the connector. If it is a bullet connector, it is a 77.

If there is a T shaped connector it is a 78. 

It looks like the 78 model year cars started around August 77. What is the build date on the door jamb plate?

Once you can tell us which model year you have, then we can start to help you.

Hello,

Apologies for the picture not showing up.

I  had confused the oil pressure switch with the oil pressure sender, the pictures you had attached is what I was referring to.

The door jamb plate says that the production month and year was 8/77, and upon further inspection my oil pressure sender has the T shape connection (I'll try and link that image).

Thank you for your response!

Okay, so for what you are trying to do, refer to the 78 wiring diagram and factory service manual. 

Try this 

And this 

Thank you so much, your explanation of the different colored wires and what they do is very helpful, and makes sense.  I will reattempt to wire the pump the right way and repost any problems I may run into in this thread.  

As a side note, I have read about a way to hard wire the fuel pump to the battery to get it to run? Is there anything you could explain about that?

Again, thank you so much.  Very helpful.  

8 hours ago, MarkyR said:

As a side note, I have read about a way to hard wire the fuel pump to the battery to get it to run? Is there anything you could explain about that?

You would have to provide a link. I don't like going straight to the battery for power without fusing. Without a fuse, a short circuit could cause a fire in your car.

By placing a jumper between the two green/blue wires at the fuel pump relay, you at least have the fusible link to provide some protection.

Right, I was thinking that I would need some type of resistance to not burn something out.  

So to my understanding, if I connect the green/blue wire to the fuel pump from the fuel pump relay, and place a jumper between the two green/blue wires as well, the fuel pump should run?

Thanks!

Edit: got the fuel pump to run hardwired to the battery, and had engine cranking and fuel going through it but it still didn't run.  Now going to check if I have a spark and if my injectors are firing correctly. 

Use starting fluid. If it fires, you know you have spark. If it dies immediately, you probably aren't getting the injectors to fire.

Don't be afraid to check for corrosion at the ECU.

Ah, I was actually using starting fluid while cranking it, and it didn't fire, and never ran; so I assumed there was an issue with the spark.  Guess this confirms my suspicions.  That or I have many more problems to find lol.  But for now, at least I have fuel running through my system.

ECU looks to be fairly clean.

Thanks!

Definitely check spark and timing.