Electronic – Headphone wire color coding


How do I tell which wire is which if I have a copper wire, red and green coded wire? Is the unshielded copper wire ground?

Best Answer

Red is for Right. Blue (or green) is for Left. Copper is for ground (I remember this with the mnemonic Red Right bLue Left Copper Common). All 3 are coated in a lacquer you need to burn or scrape off before you solder. With standard headphone plugs, with the plug facing away from you, the right pin is right, the center pin is ground, and the left pin is left.

  1. Common (or "ground")
  2. Right
  3. Left
  4. Insulating ring

1ground 2Right 3Left 4Insulating ring