Solved it by soldering mercury with a match with the wire that I hadn't 100% confirmed was right but was most likely right, don't need help anymore.
No idea how to delete the thread though...
Hey, just earlier today my headphones randomly decided to stop working on one side. The other side works perfectly fine.
I pried open the case and looked at the wiring, I believe I found something that might be wrong, but even if what I assume is correct, I still don't know what to solder it...