Long story short i have a project car and i replaced all the harnesses except body on a 2003 350z. I did an auto to man conversion on the ecm and the car cranked after everything, but my gauges didn’t work and i noticed the engine room harness caught fire at some point 🤷🏾‍♂️. Last harness to replace after finding a part out on FB, but it’s an 04 harness (couldn’t find any 03s). i didn’t notice that 1 connector to the BCM is completely not apart of this harness and i’m not good with electrical and i need to figure out where this black and red wire run to so i can run it directly because im real sick of messing with this project lol. any help is greatly appreciated on how to run this directly. i’ll answer any questions you guys have

the damage to engine room harness (3/10 wouldn’t replace again)

the 2 pin connector i need help identifying

picture of old harness out of car 🥲