This video will show you how to connect a third party remote controller and flight controller. 1. Connecting a third party remote controller to DJI Goggles RE. Check supported remote controllers in the quick start guide and ensure that your remote controller is compatible with DJI Goggles RE. Connect 1 end of the cable to the coach port of the remote controller and the other end to the 3.5mm audio port on the DJI Goggles RE. Set the DJI Goggles to coach mode. 2. Connecting the third party flight controller to the DJI OcuSync Air Unit. Check supported flight controllers in the quick start guide and ensure that your flight controller is compatible with DJI OcuSync Air Unit. Connect the DJI OcuSync Air Unit power (9-16.8V) port and power GND to the positive and negative poles of the battery. Connect the UART_RX port on the Air Unit to the OSD TX port on the flight controller and the UART_TX port to the OSD_RX port. Connect the S.BUS and signal GND to the RX port on the flight controller and GND. Note: Set the flight controller to the S.BUS mode. Restart the flight controller and DJI OcuSync Air Unit. Then the connection is complete.