Hey there everyone!
I am so close but there is still something going wrong.

Anyone know why this happens?
Are the boards powered 12v? Doubble check it pls
I have a corsair rm750 connected to the boards.
I am retrying everything again tonight i'll seewhat happens otherwise i'll set up TW.
Other thing
a common mistake that I have with some customers.
If your boards are with wire terminal did you happened to connect the red wire to + and black to - GND?
If so change it to
Yellow + and Black - GND.
If this is not the case , please excuse me I was not intending to offend you.
Best Martin