[Pete]

Originally Posted by MALAK

I'm surprised nobody mentioned this:

http://www.qualitypowerauto.com/item...-Flatheads.htm

Not the cheapest, nor original, but probably the simplest solution to convert from 6V to 12V.

I have mentioned those many times.
I have used those since they came out many years ago.
They can be had for around $100 on eBay if you watch for them.
At one time I even showed how to use a floor type headlight dimmer switch mounted in the original start pedal hole to activate it.