Connection 4028 fan with Octopus 1.1

Hi,
I open a topic to help those who want to connect a 4028 fan that never stops on an octopus 1.1
If I believe the documentation, you have to connect the black wire of the fan to the negative pin of a free slot of a heater cartridge slot.
Then you indicate the pin used in "printer.cfg" as indicated in the documentation.

Here is a schematic, is it right?