I used a dupont connector to make that little resistor dongle hanging out the side there. So far as I can tell those pins are the same as the pins in the connector above it. So I hook the yellow wire to PC9 and then red/black to the 12V input power screws.
That red burly mount is here on my website (can’t be bothered to create a thingiverse ID). You’ll need to rotate it before printing.