64 Plymouth 273 Intermitent severe misfire.

Murray said

Is the ignition all original? Coil, resistor? When you "gave the coil battery voltage" did you use a jumper wire from the battery to the coil?

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I forgot to mention that. Points, rotor, cap, coil and ballast resistor are new. I didn't have a condenser today but I'll put one on tomorrow. Yes, 12 volts from the battery.