Hello Racer.... my first program for real Instrument Clusters (BMW e36 tested) is ready for you. The program used to operate a speedometer in a very simple manner. Arduino connect with tachometer according to the instructions and connect in the program. It may still 2 pots and 2 switches are configured as an input device. Rpm, Speed, kmh, Gear and Temp (static) as Output 2 x Poti, 2 buttons as input (handbrake, horn ...) video show rcc with Project Cars but Assetto Corsa and R3E will work also