It's great to hear about the new update for the John Deere 8R Series Edit v1.6 mod in FS25! The fixes and improvements you mentioned sound very promising and should enhance the gameplay experience for players. The addition of mouse control for doors and back window, passenger seat for multiplayer, and the "high beam" feature for the Ledbar light are excellent additions that add to the realism and functionality of the mod.
The introduction of animated wunderbaum inside the vehicle is a nice touch that adds to the immersion and attention to detail within the mod. The configurations for engine power, wheels, carpet, beacon lights, real GPS, and rims color offer players a variety of customization options to tailor the tractor to their preferences and playstyle.
Overall, it seems like the v1.6 update brings a good balance of fixes, enhancements, and new features to the John Deere 8R Series Edit mod, making it an even more enjoyable and realistic addition to the game. Players are sure to appreciate the attention to detail and effort put into this update.