Hi again, Thanks for that. I actually realised after some research that those thin wires used in earphones do already have an insulating coating on them... that's the coloured coating on the wires - the red and green stuff! I just scraped some of that coloured substance off the ends of the wires to solder them on. Its just plain copper wire under that. So YES, they are perfectly safe to use as is without any additional insulation. My N1 worked fine after that except the wires were initially too short and they prevented the head mechanism from reaching the end of the disc! DOH... Thanks again!!