REPRODUCTION NAPA FORD REGULATOR VR412SB, NEW 81-2905, 231-14007, C2AZ10505C - NEW in excellent condition. Please view pictures.

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This is a mechanical voltage regulator, a device used in older automotive electrical systems to control the output of the generator or alternator.🛠️ Key Specifications & MarkingsVoltage: 12 VoltsGrounding: Neg (Negative) or Pos (Positive) ground systems.Terminals:A: Armature (connects to the generator armature output).F: Field (connects to the generator field winding).B: Battery (connects to the battery/ammeter circuit).⚡ Polarization InstructionsThe label on the unit outlines critical instructions to polarize the generator before starting the engine. This matches the detailed steps provided in the instruction manual below it.Step-by-Step Polarization ProtocolDisconnect the wire currently attached to the regulator terminal marked FLD (Field / "F").Touch this disconnected field wire directly to the BAT (Battery / "B") terminal.Hold it there momentarily—for no longer than 2 seconds.Expect a brief spark; this is completely normal and indicates current is flowing to set the magnetic polarity.Reconnect the field wire securely back to the FLD ("F") terminal on the regulator.Start the vehicle and test the charging system for proper operation.