Hello! It seems like you are looking for a DLC Display Prefab that includes a display with and without a screen, a holder for the cabin's quick-release rail, a universal mounting arm with adjustable axes, a display decal for a reversing device, and sound for parking assist. You mentioned that the Mercedes-Benz Trucks DLC is required for the cameras.
For the XML entries, you would need to define the functions for the camera, reversing camera, and parking aid sound. Here's a basic structure you could use:
```xml
<!-- Camera Function -->
<CameraFunction>
<!-- Add parameters specific to the camera function here -->
</CameraFunction>
<!-- Reversing Camera Function -->
<ReversingCameraFunction>
<!-- Add parameters specific to the reversing camera function here -->
</ReversingCameraFunction>
<!-- Parking Aid Sound Function -->
<ParkingAidSoundFunction>
<!-- Add parameters specific to the parking aid sound function here -->
</ParkingAidSoundFunction>
```
You'll need to fill in the specific parameters for each function based on the requirements of your DLC Display Prefab. If you have any specific questions or need further assistance with implementing these features in your XML file, feel free to ask.