Solder the black wire to the north pole of the power connector following the same techniques used for the switches.

Solder the red wire to the west pole of the power connector following the same techniques used for the switches.

Leave the east pole unconnected. There is no south pole here.

Press the socket into the mounting block. Note that one side of the block is slightly larger. The smaller side should be towards the wires.

Screw the mounting block to the side of the control panel with two M3x10 screws.

Test the connection with a multimeter.