Modern computers often struggle to run the original WDS software because it relies on outdated web technologies:

The system lists every pin on a given control unit connector, specifying: The pin number.

Finding accurate electrical schematics for classic and modern-classic BMWs can be a major challenge for DIY mechanics and professional technicians alike. The is the definitive factory resource for diagnosing electrical faults, retrofitting modules, and understanding the complex wiring networks of BMW vehicles produced from the late 1990s through the mid-2000s.