Hello, Im looking for some help configuring marlin for BTT SKR 1.3.
My printer is mostly custom at this point but it used to be a Tronxy p802ma (new board, screen, frame, switches, extruder. the only components left are motors, screws, bed and Zsensor.
The switches are where i am stuck. The switches i have are NO NC mechanical switches, the wires are only 2 wires connecting to G and S pins on the SKR 1.3.
I have tried switching the wires from their original NO leg to the NC peg without change and im not sure what i am doing in marlin (currently set to pullup by default).

Can anyone let me know how this should be wired and what settings should be set on Marlin for these to work.

Thanks.