I found a way to get WRC10 to work with Fanaleds.
Using this patch:
https://www.racedepartment.com/download ... tch.38991/
Just install the patch following the instructions, then you launch their stub DirtRally2.exe with "/port 30500 /protocol extradata3" and Fanaleds will believe Dirt Rally 2 is running and fetch the telemetry correctly.
To make it easier to launch, create a shortcut to DirtRally2.exe. It should look like this:
Now back to driving the Celica GT4 at the 1993 Kenya Safari Rally with SLI-Pro support