By your first question, it sounds like electrical is not your strong suit. My advice is to be SURE you understand the conversion tip given in our tip section and the advice given by the fellows above, before you attach the final battery cable. It's not hard to understand, just need to be complete.
You need:
1. 12V battery
2. 12V externally resisted
coil.3. New starter mounted
switch with side terminal
4. Ballast
resistor.5. 10si Alternator-best choice. Easy. Brackets. Gets rid of regulator and wiring, but not original.... or a 12V generator- original looking, expensive and may still use regulator.
6. Possible voltage reducers for gauges/heater fan motor.
7. 12V bulbs all around
8. $250
