6 volt to 12 volt conversion

[JSeery]

Didn't look at the links posted above, but you need to get the coil straightened out. With 12v neg ground, the + side of the coil goes to the ignition switch and the - side goes to the distributor. Need a 12v coil that has the proper internal resistance or a coil and a ballast resistor. What you need to end up with is around 6 ohms, either a 6 ohm coil or a 3 ohm coil with a 3 ohm ballast resistor.