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Discussion Starter · #1 ·
I have a 260Z and a '82 280ZXT engine to put in it. I have the computer, engine harness, fuel pump, heat shields, air flow meter, ignition coil, and all the other stuff. I have two questions. How do I wire the EFI harness, fuel pump, and fuel pump relay to the 260Z harness and do I need the 280ZXT ignition swith and ignition relay? Please help!
 

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Discussion Starter · #2 ·
What I would warmly suggest you do is go out and buy a Haynes manual for the 280ZX/ZXT and go to a copy center and make enlarged copies of the wiring schematics. I would use some markers to trace the lines that need to be adapted to the rest of the normal electrical wiring harness. The engine management system is separate from the regular electrical system. There are not that many connections to be made but you need to make these copies and trace the lines so you can figure out how things are hooked up. It's not that hard, just a matter of doing it. If memory serves me, I believe you only need to use 2 or three relays. You need one for the fuel pump that has a trigger wire from the computer/harness, and you need one for the computer power relay that need a trigger hot wire hooked up to it when power is on. You also will need to run a wire from the computer to the coil. Let me stress the importance of you getting these books and enlarging the schematics. This is not optional, you SHOULD do this or you should take it to someone else who will. I only say this because you can misswire something from someone trying to tell you what to do and you not understanding or the other person not explaining correctly. Also, if you are going to take on this project, you should have the 280ZX/ZXT book so that you can trouble shoot. It is liekly that it won't run perfectly if it all once you hook everything up. There are little things that you could miss in your installation. I know I had many different problem when I did mine the first time. Also, one of my biggest enemies once I did get it going was vacuum leaks. I would replace intake/exhause manfold gasket, all vaccum line, and injector seals unless you know that they are good.
Hope this helps,
Tim Deesen
71' 240ZT
CA TS 240ZT

> I have a 260Z and a '82 280ZXT engine to put
> in it. I have the computer, engine harness,
> fuel pump, heat shields, air flow meter,
> ignition coil, and all the other stuff. I
> have two questions. How do I wire the EFI
> harness, fuel pump, and fuel pump relay to
> the 260Z harness and do I need the 280ZXT
> ignition swith and ignition relay? Please
> help!
 

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Registered
Joined
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107,695 Posts
Discussion Starter · #3 ·
Thanks for the advice. I have already done the wire chasing in the books and have simplified it enormously. I just fear that it is too simple. I have it all map out and i will go with what i got but i was just seeing if anyone else came up with what i did, Thanks

> What I would warmly suggest you do is go out
> and buy a Haynes manual for the 280ZX/ZXT
> and go to a copy center and make enlarged
> copies of the wiring schematics. I would use
> some markers to trace the lines that need to
> be adapted to the rest of the normal
> electrical wiring harness. The engine
> management system is separate from the
> regular electrical system. There are not
> that many connections to be made but you
> need to make these copies and trace the
> lines so you can figure out how things are
> hooked up. It's not that hard, just a matter
> of doing it. If memory serves me, I believe
> you only need to use 2 or three relays. You
> need one for the fuel pump that has a
> trigger wire from the computer/harness, and
> you need one for the computer power relay
> that need a trigger hot wire hooked up to it
> when power is on. You also will need to run
> a wire from the computer to the coil. Let me
> stress the importance of you getting these
> books and enlarging the schematics. This is
> not optional, you SHOULD do this or you
> should take it to someone else who will. I
> only say this because you can misswire
> something from someone trying to tell you
> what to do and you not understanding or the
> other person not explaining correctly. Also,
> if you are going to take on this project,
> you should have the 280ZX/ZXT book so that
> you can trouble shoot. It is liekly that it
> won't run perfectly if it all once you hook
> everything up. There are little things that
> you could miss in your installation. I know
> I had many different problem when I did mine
> the first time. Also, one of my biggest
> enemies once I did get it going was vacuum
> leaks. I would replace intake/exhause
> manfold gasket, all vaccum line, and
> injector seals unless you know that they are
> good.
> Hope this helps,
> Tim Deesen
> 71' 240ZT
> CA TS 240ZT
 
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