It seems like you are experiencing an issue with the high beams and bull bar lights on the Forst LKW v1.0 vehicle in FS25. To troubleshoot this problem, you may need to adjust the configuration of the lights in the mod settings.
First, check if there is an option in the mod settings to customize the behavior of the lights on the bull bar. Look for any settings related to high beams or light assignment.
If you can't find a specific setting for the bull bar lights, you may need to delve into the mod's code to make the necessary changes. This would require some basic knowledge of modding and editing XML files.
To change the light behavior so that the bull bar lights come on with the normal low beam instead of the high beam, you would need to modify the relevant part of the code that controls this behavior. Look for references to light assignments or beam configurations in the code and adjust them accordingly.
Additionally, if the light color can be freely selected, you should be able to choose a different color for the bull bar lights to differentiate them from the high beam lights.
Overall, adjusting these settings may require some technical knowledge and tinkering with the mod files. Make sure to back up your files before making any changes in case something goes wrong.