Dynamite 120A marine ESC

Is anyone familiar with the DYNM3875 marine ESC? Im trying to figure out how to use the BEC feature that
Im told is switchable for higher voltage/tourque servos. Is that what the 3 pins are for between the motor leads? The manual and mfg. website make no reference to them at all???

That ESC has a built-in 6V/5A BEC, but it is not configurable in anyway. The 3 pins are for the programming card to set parameters like timing, and LVC.