Phantek Enthoo Pro M Tempered glass Edition SE Top mounting of rad

[=TE= jossmer]

Hello
I have the above case and I am trying to work out how to install a 360mm rad in the top mounting bracket.
There is very little documentation as to how best to do this.
Fitting with 3 x 120 fans but stuck how it works.
Also the 3 fans supplied have a very short 4 pin cable. What cable do I need to connect and extend? Also where do I connect these 3 fans on the Main board. Asus ROG Crosshair VII Hero X470.

I hope someone can help me here

Thanks

Joss

 

[=TE= jossmer]

Update Resolved.
On the top rad mounting bracket you have to fix the rad to the bracket and the fans underneath the rad. The space above the bracket is dead space. Shame really.
Regarding the short cable on the fans. I have had to buy a Akasa AK-CB002 PWM Fan Splitter Cable to resolve this.