Hello,
I've seen where someone requested to add the Logitech G923 Xbox edition steering wheel under the code forums, however, the file is incorrect for me. From testing, the Response endpoint should be 0x81, which differs from the G920. Here is the contents of the 046d:c26d file for inclusion.
# Logitech G923 Racing Wheel
MessageEndpoint=0x01
ResponseEndpoint=0x81
TargetClass=0x03
MessageContent="0f00010142"
This is the line that I've added for UDEV to trigger it:
ATTR{idVendor}=="046d", ATTR{idProduct}=="c26d", RUN+="usb_modeswitch '/%k'"