i was just needing some wires for a project and when i cutted some headphones wires, i noticed they got one normal wire (like copper) and also had a red wire and a blue wire (not the insulation color, the same wire, the conductor of the wires are colored) so i was thinking if i only conect battery to the copper one, will i get the power or not, and btw how this work for headphones if they are always touching (the diferent wires) and when they get to the headphone the split.. its strange