[Purdy Swoft]

Actually , a six volt 1.5 OHM coil can be used on 12 volts if a resister is used . The resister prevents the full 12 volts from entering and burning out the 6 volt coil . In other words a three OHM coil can be used on 12 volts without a resister . If a 1.5 Ohm coil and resister is used on 12 volts the ignition will still be running 6 volts , The starter and lights will get 12 volts .