Cut the Cable Ends and Strip the Wires

• 1). Cut the 1/8-inch headphone connector off an existing cable.
  
  
• 2). Use the wire strippers to remove 1 inch of insulation from the cable.
  
  
• 3). There will be three wires exposed; a white one, a red one and one with no insulation. Strip 1/2 inch of insulation off the red and white wires.
  
  
• 4). Cut the phono connector off an existing cable.
  
  
• 5). Again, use wire strippers to remove 1 inch of the outer insulation.
  
  
• 6). There will be a red wire, a white wire and one wire with no insulation. Remove 1/2 inch of insulation from the red and white wires with the wire strippers.
  
  

Connect the Headphone Cable to the Phono Cable

• 1). Twist the red wires from each cable together and solder the connection.
  
  
• 2). Twist the white wires from each cable together and solder the connection
  
  
• 3). Twist the two remaining wires with no insulation together and solder the connection
  
  
• 4). Use electrical tape to wrap each individually soldered connection. Ensure that bare wire from each of the three connections does not come in contact with any other wire.
  
  
• 5). Use electrical tape to wrap all finished and wrapped connections together into one cable.