① Place the connecting rod at the corresponding connection point in the carriage.
②After matching the holes at the connection, insert the screw into the holes, and tighten the screw with a wrench .
③Fix the other end of the connection rod
④Remove the buckle on the other end of the connecting rod, and then pull it out
⑤ Align the connection and press it, then insert the buckle back
⑥Pick up the black data cable and find the largest fixed point on the connector.
⑦ With the largest part facing up, insert it into the triangular part of the carriage interface.
⑧Do the same thing on the other end, and then tighten it
⑨ Pick up and connect the red power line. Be careful not to connect it to the train charging port above.