Geeetech

I am thinking of upgrading my stepper drivers to one of the above drivers. I have watched the geeetech video but cannot figure out which of the wires need to change as they are all black not coloured.
I have an A20m and setting up the drivers vref shouldnt be a problem. I am going to update all 5 drivers for uniformity does this mean all the motor wires will need to change direction.
Thanks

Hi,
Yes, it is. Please refer to the video: https://www.youtube.com/watch?v=fmwMq9t-Nxc&t=13s , and the picture below:

Thank you. That picture is much more helpful as the video has his hands blocking which wires needed changing.