Black wire on DC Stator

Morning all,
I’m converting my electrics over from ac to dc using the bgm Stator.
Question is where the hell does the black wire that comes from the dc Stator go to ?
Regards
Shane
I’m converting my electrics over from ac to dc using the bgm Stator.
Question is where the hell does the black wire that comes from the dc Stator go to ?
Regards
Shane