Why did sunroof stop working when changed radio?

The sunroof may have stopped working after changing the radio due to a few potential reasons. It's possible that during the installation, a fuse was blown or a wiring connection was accidentally disconnected. Additionally, if the new radio has different power or ground requirements, it could affect other electrical components, including the sunroof. Finally, if the vehicle's battery was disconnected during the radio swap, it might require a reset for the sunroof to function properly again.