I just replaced an aux on a Turtle Beach Recon 500 headset 2021 and this thread was helpful, so I’m posting what I discovered to help others.
Snipped the wire and saw 2 leads, a white lacquered wire with a copper shield wire twisted around it, and red and green lacquered shield wires wrapped around 2 other wires that were green and blue. So in total 6 different coloured wires. After loads of research and trial and error this was the solution:
Unwrap the copper shield wire and the green and red shield wired and twist these 3 together, these are the ground wires.
The white lacquered wire is the microphone
The green wire was the right headphone
The blue wire was the left headphone
Extra help, the wires don’t solder well due to the lacquer, you can use a lighter and sandpaper to expose a good contact OR best solution I found was wack your soldering iron up to 400C+, get a drop of liquid solder on the tip of the iron and push your lacquered wire through the droplet on the iron. This just melts the lacquer and once removed the wire will tin as you go, this may take a couple of drops of solder as the lacquer melting turns the solder dirty and weird. Hope this helps!