Use hardware-in-the-loop (HIL) simulation to test instrument clusters of virtual vehicles. Validate whether display components (e.g. the speedometer, the revolution counter, or the fuel gauge) work correctly and whether important warning messages or the status of the assistant systems are properly displayed. Connect the instrument cluster to a Speedgoat real-time target machine running a virtual vehicle and create direct interfaces using analog and digital signals or standard communication protocols such as CAN, CAN-FD, FlexRay or Automotive Ethernet. Create optimal workflows that allow the testing of instrument clusters in real time without needing access to vehicle prototypes.