12 volts / 6.8 amperes = 1.76 ohms
Neither Bosch or Mitsubishi ever made an alternator even industrial grade that has this low of resistance in the bobbin. You can measure across the two brushes, engine off, with an ohm meter. But sometimes transient carbon glazing between brush and rotor fouls this up.
I used to wind Delco Industrial 35 and 30 SI 12-volt alternators to 1.70 ohms (full bobbin ampere turns) and wind stators triple Delta to get 145 amps for school buses. Those alternators had Transpo 911-04 regulators bolted to the flat plate on the rear of the alternator. The 04 was self-excited from the stator residual magnetism. No ignition switch wire. Those alternators went from 75-90 amps cold rating to 145, and from 0 amperes at 1,600 rotor RPM to 40+ amperes.
One way to determine what Chinese resistor philosophy is being used is to overload/fail a 50 watt versus a 100 watt wire wound unit. Tungsten maintains a very flat resistance until it melts. But these resistors are most probably nichrome.
The 100-watt resistor price was so cheap I bought three.
