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atl_adam

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  1. Getting no reading at pin 1 from the negative coil post/blue wire
  2. Getting no reading at pin 1 from the negative coil post/blue wire
  3. So I've got an electrical issue that I can't seem to figure out. Backstory: my car is a 77 280z that has 55k original miles. The wiring harness was shot so I replaced it with a '76 wiring harness with all new connectors, etc and now I'm not getting a grounding pulse to the injectors (everything worked fine before the '77 harness was taken out, it just needed to be refreshed). I've got 12v at both injector connectors, I did a continuity test at pin 5, 16, 17, and 35 but still don't have an injector pulse. I've checked the chassis ground and everything looks good. What next?
  4. IF that's the only option then I'll just let the car sit until I find a 7-pin harness from a '77; however, I'd hate to think that's my only option.
  5. So a little back story (without going into too many details): I purchased this car (1977 280z bone stock and sitting in a barn) extremely cheap ($900), everything was there and seemed to be in place; however, the previous owner said the car needed a new AFM. I purchased the car and AFM and installed it. The car ran, idled, etc. While going through the entire car, I found that the engine bay wiring harness (fuel injector clips, other 2 prong clips, and wires looked like they had seen some sort of heat as they were all fringed and brittle. I was able to source a completely new harness from the ECU forward; however, it came out of a '78. Everything will match up except for the AFM connector. My '77 has 7 pins where the new harness from the '78 has only 5 pins. This is because Datsun changed from having the fuel cut-off controlled by the AFM to having it integrated to the oil pressure switch/sending unit (feel free to correct me if I'm wrong, but i'm fairly close with that statement, i think lol). My question is this: Can I still use the '78 engine harness on my '77 and if so, how do i bypass or "jump" the fuel cut-off pins/switches within my '77 AFM? I have heard bits and pieces out there that this can be done but after hours of searching, was empty handed. I'm extremely excited to get my hands dirty and get this Z on the road as it's my first 280z. Any help will be greatly appreciated. Thank you in advance. -Adam
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