New and improved with thicker 22ga wire and lower resistance for more power! This adapter allows the use of an external BEC for servo power without needing to disable your ESC's internal BEC. Servo connects to +/-/signal plug and BEC connects to +/- plug. Signal/- connector plugs into the servo RX channel. The servo gets signal from the RX and shares a dual ground path to both RX and external BEC to prevent floating ground issues. A must-have for any crawler running over 300 ounce/inch servos!