I chose to solder new wires, and place heat shrink tubing. This is not required, there should be ample room for the excess wire, underneath the fan inlet cowling.
I also chose to paint the fan black, so it does not draw more attention. It is barely visible inside the inlet cowling.
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Must be printed with supports. Print in material which will not soften under direct sunlight (I chose PETg).
The included Gcode file is:
* Prusa MK3/S Firmware version 3.7.2
* Temps for PET/PETg
* 0.15 Speed profile, 150 travel, 50 perimeter
* Supports from Build Plate with Z contact of 0.15mm