Hi all. Working on 54 3100 with 235 6v. In process of doing a full tuneup and I noticed the new coil I bought (NAPA part # ECH IC7) is marked "Use with external resistor". There was none on the old coil. Not sure if I need to add a resistor??? My electrical "knowledge" is some where between caveman and 2nd grader blush so any help/advice would be welcome. THANKS!!

Ol' Blue
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