Where Do The Wires Go ?

[Neale]

That BOB looks like the zp5a-int. Quick Google search will turn up a manual for it and you might be able to find some sample connection diagrams. Each axis has three signal outputs (pulse, dir, enable) and ground. I can't remember if it can sink current or just source it but those driver connections sound as if they need the BOB to sink current (open collector output). I think I used mine to source current into driver opto-isolator inputs. I was using this with M752 (big brother of driver mentioned in link given above) but driver described by OP sounds as if its input connections are rather different.