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Changes to Step #30

Edit by Dave Ogles

Edit approved by Grégoire Saunier

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[title] PSU wiring - MK3(S)
-[* 11] Direct links to the original Prusa electronic assembly guides: [https://help.prusa3d.com/en/guide/8-electronics-assembly-b3-r2-design_73648|MK3 (B3/R2 design)], [https://help.prusa3d.com/en/guide/8-electronics-assembly-b7-r3-design_75136|MK3 (B7/R3 design)], [https://help.prusa3d.com/en/guide/8-electronics-assembly_34416|MK3S].
+[* 11] Direct links to the original Prusa electronics assembly guides: [https://help.prusa3d.com/en/guide/8-electronics-assembly-b3-r2-design_73648|MK3 (B3/R2 design)], [https://help.prusa3d.com/en/guide/8-electronics-assembly-b7-r3-design_75136|MK3 (B7/R3 design)], [https://help.prusa3d.com/en/guide/8-electronics-assembly_34416|MK3S].
[* 4] Using a Philips screwdriver, connect the 2nd pair of wires from the PSU:
- [* 2] Positive red wire goes on the red circle
- [* 1] Negative black wire goes on the black circle
+ [* 2] Positive, red wire, connects to the screw terminal indicated by the red circle in the image
+ [* 1] Negative, black wire, connects to the screw terminal indicated by the black circle in the image.
[* 4] Tighten the screws ***firmly***.
-[* 9] Double check you have connected the wires in the correct order and orientation.
+[* 9] Double check that you have connected the wires in the correct order and orientation. Note that the wire terminal should go under the washer of the screw terminal.