Trying to repair my daughters hair straightener and need some help trying to figure out what type of wire to use. It does not appear to be copper and it appears to have a coating that is not a standard plastic. Thought it may be something hear resistant. Also as shown in one of the picture where the wire are connected together the "shrink" wrap is different than what I have seen before. Have tried searching the net but most of the stuff I have found is related to replace the power cord not the internal wires. Realize I could just buy another one but what fun would that be. Any suggestion on the wire and connecters?