I have installed a CDI unit in my 63 Moby. The instructions say to upgrade your headlight and taillight bulbs to 12v but then caution that even with a regulator the voltage can blow the bulbs. Did some research and decided to get LED bulbs, they can handle 6v to 24v and fit the existing thread in sockets. They are on order and I will give a report once they are installed.
John in Texas