Stepper motor, with torque the wrong direction

Hmm, I wonder they made it work in the scanner.

I am 100% sure that both positive was connected together, and that it was the plus coming in there.

How can I do it without connecting the two together? I tried to experiment a bit, but only two of the four wires. Or is it like it will then be the opposite?

So if it is set A and B, and common on set A is plus, then common on set B is negative, to make the two work together instead of only one pulling the motor round?