"Route complete. Thank you for preserving the memory. HK Tram OpenBVE — final release."
To get your hands on the digital controller of a Hong Kong Tram, you need three things: the Simulator, a Route, and a Train.
If you cannot find the add-ons folder, right-click the openBVE Addons shortcut on your desktop (created during installation) to "Open file location".
Vehicle (train) files