Kurt..... ..for a "MOMENTARY" 12-volt jolt can start a 6-volt coil. The key word is "momentary" and once started you MUST use the "infamous ballast resistor" plus a 12-to-6 volt converting resistor or you will BURN out yer 6-volt coil. Its the LAW; thermodynamics heat-sink law. Unfortunately, the modern 12-volt squarecan ignition coil has NO identify part numbers or voltages, but they can "engrave" the country of manufacture. Go figger. While I can quote resistance reading values, unless you have a "lab-grade" ohmmeter, they're not too helpful in identifying 6-or-12 volt squarecan coils. But for the record, 6-volt coil primary = 1.2-ohms, about 7000-ohm for sparkies; and modern 12-volt coil primary = 2.5-ohms, about 7000-ohms for sparkies. The "infamous ballast resistor" can vary from about 0.4-ohm when COLD to about 1.7-ohms when HOT, use a nominal value of 1.2-ohms. The 12-to-6 volt converting resistor should be 2.5-ohms 50-watts (NTE 50W2D5 or eqv). The 8NE10306 is listed as 0.5-ohms and NOT a 12-to-6 volt converter for the 6-volt frontmount coil. (unless you use 5-resistors in series like hotdog weenies) The early 12-volt squarecan coils needed a "current limiting" resistor of about 1/2-ohm. Radio-Shack no long lists their 1-ohm 10-watt 271-131 2-pack resistor to make what is commonly referred to as "Dells Trick Resistor". Use the 8NE10306 instead..... ..Dell, yer self-appointed sparkie meister
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