I am planning to wire my 50, which is restored mostly to original but I want to go to 12V. I read the how to area and conversion looks simple but I wanted to ask if it makes sense for me to switch the regulator, horn relay and the other electrical "boxes" all to 12V from the start or should I stick with the 6V pieces? I have to buy them all, but already have a new 6V wiring harness that was with the truck. Thanks.