Rick, FYI the "resistor" type of device you describe is known in the trade as a "THERMISTOR". Its a type of resistor that increases its resistacne over time as it heats up.
I have seen thermistors used in ignition circuits to replace the start up ballast by pass system where a switch contact actually by passes the ballast to apply unballasted battery voltage on the coil ONLY while cranking. (i.e. it does it without any ballast by pass switching system)
HOWEVER the typical generic ignition ballast resistor (the white ceramic bathtub enclosed wirewound units) IS NOT A THERMISTOR and its typical resistance (maybe 1.2 to under 2 ohms) is there immediately at start up and afterwards also (sure it may increase slighly with heat).
Im not sure if the poster has a normal typical ballast resistor or a thermistor, maybe some of the after market kits supply a thermistor instead of a normal bathtub style resistor??? If its indeed a "thermistor" it will function as you indicate, but if its a normal ballast resistor it will still have its resistance (around 1.2 to under 2) right from the get go
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