Automotive electronic systems continue to increase in number and complexity as more electronic control units (ECUs) are deployed in vehicles, enabling new features and capabilities such as smart radio connectivity, road noise cancellation (RNC), personal audio zones (PAZ), in-car communications (ICC), and autonomous driving. As the number of ECUs increases, so does the weight and cost of the required cable harnesses that provide connectivity between the various ECUs. This added weight, in turn, decreases the fuel efficiency of the vehicle. This article offers solutions for reducing the weight of cable harnesses while delivering high fidelity digital audio.