A sad story: The cable on these lightweight headphones got caught in a rotating vacuum cleaner brush (ouch!). It sucked the wire right out of the headphones, breaking them at the solder joints. I want to re-solder the cable wires back to the headphones. The trouble is that I don't know which wire goes to which solder terminal. (It would have been nice if a little insulation was left, but no such luck).
The cable has 4 wires, red, green, copper, and blue. Green is plug tip, red is plug ring, and the copper and blue both go to ground on the plug.
Photos show the 4 solder terminals. Any help here would be much appreciated.