I've measured the resistance of hundreds of HEI coil primary windings. They average around 1/2 Ohm. 14 volts (charging system voltage) divided by 1/2 Ohm, according to Ohm's Law works out to 28 amps. Until the inductive reactance of the coil primary kicks in partway through the coil saturation cycle, there will be a very high primary current. Watching the primary pattern on an oscilloscope is pretty informative, with a heavy current surge early in the coil saturation waveform. Bigger is better on the hot wire to the coil.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!