We would have to look into supporting this game. Could you try to follow the readme for OMSI and rename the .exe to the one from OMSI, and see if that does anything?
This should now be implemented in Fanaleds 2.3. We were unable to test it because we do not own the game, so it would be great if you could give it a shot!
Gear is working D = 3 N=N r=R
Turn Signal is not going on
Handbrake light not going on.
I don't know what you added into but only thing is working is the Gear and of course low fuel