Why won't you just tell me which connection is correct?
If you must know the load is a buzzer. This troublesome buzzer in particular: Strange behavior of UNL2003 (all pins turn on together)
And there is no need for high speed switching. It's an active buzzer.
I'm going to order 30 boards that have this circuit on them and I just want to be safe rather than sorry.
I don't have a photo of the actual wiring because I still haven't ordered the PCB. But the wires used are these "XH" terminal type:
