In Reply to: Re: 12v ign system voltage & resistance test? posted by Rusty 2N on April 09, 2018 at 14:08:57:
I see no reason for your testing procedure to change, 6V to 12V.
Be suspect of any readings you take while the engine is running IF you are using a Digital Meter. They are terribly susceptible to engine electrical noise.
Bruce has given you the resistance for a "pure" 12 volt coil. There are also coils sold as 12 volt which are actually lower and require a ballast resistor. Maximum current in the coil primary circuit should not be more than 4 Amps.