Found beautiful 1968 Series IIA but it's still running original 6V electrical system. Lights are dim, starter struggles, charging system weak. Previous owner kept it original but practically unusable after dark. Thinking of converting to 12V for reliability but purists saying it ruins authenticity. What's your opinion? Is 12V conversion reversible if I keep original components? Daily usability vs authenticity dilemma! Want to drive it regularly, not just keep as garage queen for Sunday shows.