Hi Neale (and Dean)

All is good - stripped the resistors off of the wires (I was using 4 already) and other than the motors being reversed I have movement....yay (fixed the reversal in Mach4 motor setup). In fact I'd say the machine seems smoother than before, but that could just be placebo..

Thanks again for your help :-)

Now to get the VFD/Spindle wired, which I think is shown on Dean's diagram on the other thread (ACM and VI to the analogue 10V output) and then work out the VFD settings to change to go from RS485 to external control.