Need response from a Castle tech for MMM question

I know I'll have to "inject" external 6v power into the MMM throttle power line so the internal circuits can have their power.

BrianG, Patrick tell me that the internal BEC of the MMM have a 3.3 volts regulator to power the microprocessor of the MMM, so if you powered it with the 6 volts of your Koolflight UBEC, you risk to destroy your MMM