For this project you will need the following:
- wire snips/strippers
- soldering iron
- replacement jack
Step 1: Cut the end off your headphones.
Step 2: The fix.
I used a 'helping hands' clamp tool to hold the new jack in place while I threaded the three wires into place. With the archaic set of headphones I was using, it didn't particularly matter which wire was fed into each pin - I tried all possible configurations, I put the white wire in the long pin, and the red and black wires in the smaller pins. Gingerly, heat each pin, and solder into place.