From your description, you have a 6V stomp starter switch. If going to 12V, and have a standard coil with resistor in the circuit that needs a bypass to full 12V to the coil for better starting, you may have to change out the starter switch to one that has the small terminal on the side (see pic - stolen from Jim Carter's site). That small terminal (red arrow) gets connected to the coil directly, bypassing the ignition switch and resistor. A 6V starter switch doesn't have that small terminal - otherwise identical.
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12V stomp starter switch.jpg (21.14 KB, 148 downloads)


Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.