[tbirdtbird]

There is a lot of confusion here. Bad connections will not trigger high voltage output from the generator. Blowing light bulbs comes only from one cause, voltage too high. The third brush increases the charging output but you can't separate the voltage from the amperage. The only explanation is the the field is shorted internally, delivering full battery voltage to the field, triggering an ouput that is off the charts. You need new field coils or a new generator. Temporarily swap in another gen from someone else's car and watch the problem disappear.