[barkleydave]

So why did cars go to 12 Volt.
Lots of reasons.
1. Cost savings Lighter ga. wire required
2. Lighter weight for vehicle
3. Smaller AMP batteries required so again less weight and cost.


So Military is 24 volts
Lots of push think of current as pressure like water in a hose
Less amp required so more efficient in combat environment...corrosion moisture etc.


Lots of other reasons..
But those are some of the main ones.


On our A's
Not much difference except less chance of burning wiring with 12 Volt amp loads through the heavy 6 volt wiring.


Can add modern acc. such as radios, lights etc.


Vehicle can be jumped started by any modern car without damaging any of the Model A components.


Brighter modern lighting


Now some will argue however that is only opinion not supported by physics. Stay OE or change either way they will all go down the road.