Quote Originally Posted by crossleymarko View Post
are all the wire colours on the tororial universal...?
Try this one:
http://www.arceurotrade.co.uk/projects/PSU/index.html
(I notice that diagram has fuses on the secondary side, however I did not include them since each stepper driver already has an internal fuse to protect against over-current. Also any 'nuisance' blowing of that fuse could damage the stepper drivers.)


The colours are not universal, however there is always a clear diagram on the transformer which labels which colour is which.