Accessory TESLA Grid Utility Ancillary Controller (GUAC) for DRM0 incl.1 x wiring harness (2163703-00-x)The Accessory TESLA Grid Utility Ancillary Controller (GUAC) for DRM0, including one wiring harness (2163703 00 x), is a critical component for managing grid compliance and ancillary services in Tesla energy systems. It ensures seamless communication between the Powerwall and utility grid, enabling advanced grid support functions such as demand response and voltage regulation. Engineered for precision and reliability, this controller is essential for