That is the last thing to worry about, Right at that moment you, have your solder iron, handy. Then it matters, after you have dried test the length of replacement wire, etc, solder at hand, Iron red hot, (not quite, just making the pic). of coarse you could do what yamaha did, and solder/crimp bullet connectors on your kit, so if you have it backwards, you change the crimps to the opposite before you solder it in place, and put the heat shrink over it.which is the right direction