Diagnosing high voltage

  • What car?
  • What year?
  • Square back alternator?
  • Electronic regulator ( V shaped connector)
  • Has anything been changed on the car lately?

73 swinger
Square back alternator
Two wire alternator voltage regulator system

loads of changes recently, I repaired my wiring harnesses, repaired a bunch of terminals and wires, installed ignition relay, restored all of my factory gauges, etc.