I think your problem is the ballast resistor has too much resistance. With the coil at 1.4 Ohms, a 1.4 Ohm Ballast Resistor would give you 6V (or half the battery voltage) out to the coil. So you need a ballast resistor with less resistance, which would boost the voltage to the coil. I'm having a math headache, so can't figure it out right now dang, but with your 2 Ohm resistor you'll get less than 6V to the coil.

Last edited by klhansen; 04/21/2026 11:27 PM. Reason: can't spell either
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.