Above is transformer in question. And in case here is the datasheet: http://www.farnell.com/datasheets/2026060.pdf?_ga=1.56694762.1111228725.1474151580
As you see this is a single primary 6V dual secondary transformer. There is no center tap. And I measured with an ohmmeter that it seems like the two secondary outputs are not connected to each-other.
I'm trying to use this transformer as a center tapped one at the secondary side. The aim is to create a +6V 0 -6V split supply. If I connect B and C together would that be the center point(0) of a +6V 0 -6V transformer where A and D are the new terminals? A -6V D +6V relative to the new middle zero point(BC). I wanted to be sure before I try it and cause a possible hazard.