Generator polarizing question

[Leyland]

Thanks so much for the support and all the great advice guiding me through this. My 12v battery is sealed, and luck would have it my plan was already to install a 12v accessory plug with digital voltmeter as I had intended to monitor the system for my own knowledge. And to charge my (and wife’s) phones! I knew about the ability to adjust the 3rd brush, but hadn’t got that far yet. Perfect advice and references, this definitely helps to understand desired setting for output