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Help with 75 280z efi wiring


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Hello I recently removed my dash to attempt to repair it and when i was reinstalling it i was left with a blue wire coming out of the efi harness right above the ecu disconnected. I cant seem to find where it goes and i believe it is coming from the coil (-) negative it is the same color blue and gauge wire.

I found a picture online to show which one im talking about can anyone tell me where it goes? ( i circled it in red)

 

 

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Yeah a picture would be good. It would be apart of the EFI relay or ECU. I know there are mostly white wires in the loom and maybe 2-4 blue wires.

Where did get the wiring diagram ? Like to have one with color coded wiring . Copied the above but it's too small .

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