With a long jumper with alligator clips jump from the batt positive post to the coil positive terminal & get it started for a minute. shut it off & take the alligator clip off of the coil and clip it to the downstream (brown wire) end of the ballast & see if it will restart. If so then shut it off & move the alligator clip to the next connection point upstream in the brown wire (ign2) circuit which should be the bulkhead (clip a thin probe in the alligator clip jaws & insert it into the bulkhead cavity to touch that terminal) & see if it will start. Shut it off & move the probe to the FL main "in" terminal closeby in the bulkhead & see if it will start. then shut it off & move the clip to the next terminal closer to the batt which might be the starter relay "batt" large terminal & see if it will start. If it wont start at any of these checkpoints then the high resistance is between that point & the one preceding it where it would start.