The TAG66 is an electric autosteer kit that upgrades a standard tractor with automated steering. It pairs a motor-driven steering-wheel unit with an integrated controller (GNSS receiver, IMU, UHF radio, and 4G module) and an in-cab display for setting guidance lines. Using RTK-corrected satellite positioning, it targets roughly 2.5 cm pass-to-pass accuracy for repeatable field passes, supporting straight AB-line, A+ line, curved, and angled guidance for tasks like sowing, spraying, plowing, and ridge-making.