Refer to the following link for checking the coil....
https://www.onlycubcadets.net/forum/showthread.php?t=11
The coil should be to spec on continuity and also be the correct replacement part. Isn't the super C tractor a 6 volt system?
Also, check for continuity from negative wire removed from coil to ground with the points open. There shouldn't be any. With points closed, should read low resistance.
I don't think there is resistor in the plug wire, but others will chime in. Usually no/low resistance on the plug wire.
Finally, replace the points anyway.... If it is burnt, it is likely done. Do replace the condenser while you are at it.