I apologize for my lack of knowledge on this simple subject, but what type of wire is best for Do It Yourself repairs on a Ferrari (or any automobile application). Copper, copper-coated aluminum, number of strands, etc. Where can an individual purchase such wire, and, without a crash course in electron flow and resistance, what wire is used in particular applications (radio vs ignition circuit). How do you figure out what size wire to use to handle a certain current load? Or perhaps is there some book you can recommend that will explain all the above and more? Thanks for your time and patience.