Easy enough to check. Connect voltmeter to the positive terminal of the ignition coil, Turn key to run position, engine off, read voltage. Start engine, read voltage again. There should be a lowering of voltage after the engine starts, from a higher voltage with just the key on and no engine run.
Same voltage, start, key on-engine off, engine running, no resistor in place.
Please post results, and we'll see what you have. There is an easy way to add a resistor to a point system, and IF you need it, use a NAPA ICR13 (porcelain, bolts to firewall or other easily accessed spot) ONLY IF YOU FIND YOU NEED ONE.