Title is sort of a lie, chassis is actually a C33, but since they share a lot of the same parts I'm hoping someone with a skyline can tell me what this plug is. As far as I can tell it's been wired into the ECU and fuse box. It was already like this when I bought and the car was imported from japan, so getting in touch with the previous owner is kind of impossible. Asked some people locally and they thought it was a consult port, but based on the looks of the consult port, I don't think that's the case as this has 12 pins and not 14.
Thanks for any information you can give me. I really appreciate any help trying to figure out what this goes to.