No chassis harness but need to get power to ecu with fabricated chassis harness

[Brock]

Hey everyone, I’ve been doing research and can’t seem to find any sr wiring diagrams anywhere. The issue I’m having is that I do not have a chassis harness in the vehicle so I’ve been fabricating one to the best of my abilities. Now, I have a link engine management ecu NS13X, what I’m trying to do is figure out how to get power from the chassis to the ecu to the motor etc. 

Has anyone done anything like this before? I’ve looked for pin outs as well. But I def want some insight before possibly frying my ecu. All answers welcome. Thanks.

 

[Adamw]

Full pinout is in the G4X pc link help file.  Or in the PDF manual on the NS13X webpage.  

Are you making the engine harness as well, or do you have most of it and you are only missing the chassis connections?

[Brock]

Awesome thank you so much, I’ll take a look there now!
 

I have the stock sr engine harness, just have to finish plugging that in and see if I can get it turned on after the chassis harness is completed. 
 

I can’t find any Sr20det engine diagrams anywhere also. Everything I find is mostly fabricated harnesses etc. 

[Adamw]

I will PM you a page from a 76pin S14 manual that should help.  The main things you will need to look after is the ECCS relay, ignition coil relay, constant 12V to pin 109 (pin 58 not needed for our ecu) and power to the injectors needs to come direct from ign switch.  There is also power supplies at the top left of the diagram for wastegate, fans etc that will need to be duplicated.