For my reference, green is left (weird, I know). It must be attached to the top section of the core.      EDIT: Ran out of soldering wire. Will update when supplies replenish. 

Hey, I've tried looking about for information about repairing headphone plugs and I wanted to do it myself, however the wiring in the set I owned seemed ... strange.    I have a Koss KSC-75 and the wires no longer made contact to the plug. I cut it off, and ordered a new plug off the internet...