Once the engine is running, shouldn't there be a drop in voltage from the resistor? Isn't that the point of having it? Yes, a voltmeter (a slow measuring device) will read somewhere around 8-9 volts at the coil + lead on a running engine with a resistor. Actually, the voltage will be varying 30 times a second on a 6 cylinder engine at 600 rpm as the points open and close. When the points are open, coil + will be at battery voltage. When the points are closed, coil will be less than the 8-9 volts the voltmeter is reporting.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
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