Byd han dash cam installation

Hello all, I am struggling to install dash cam in my 2025 byd han without any luck. After removing the cover from inside windscreen, there is a square connector with three wires but no blue connector as seen on YouTube for other byd models. I installed the so called OEM dashcam with blue connector but no place is found to connect other side of the blue connector. I think there must be a multimedia host in byd han where the camera wire should connect but I could not find such host or location. The byd body controller seems to have no connectors for multimedia like gps, camera etc. Any thoughts?