Hy akguy, I'll answer your questions in the same way you asked them.
#1 If your alternator is a true one wire alternator, then you should hook the wire from the output terminal to the ammeter if you have one, the same terminal that was used in the generator charging circuit. If you are changing from positive to negative ground then reverse the ammeter terminals from their original locations
#2 The polarity reversing switch was mounted on the starter, and most of them have been removed and discarded, it proved to be unnecessary and just one more thing to go wrong in the primary ignition circuit.
#3 You should not require anything other than the internally resisited coil, if you are going to run points you could get a condensor for a twelve volt application (in some cases they were the same for six or twelve volt), hope that helps.
