The battery connects to the ESC.
The ESC connects to the motor and also the RX on channel 3.
The ESC includes a BEC to supply power to the RX.

The channels should be set up like this...

1) Ail
2) Ele
3) Throttle - ESC
4) Rudder - gyro
5) Gyro gain
6) Pitch

Throttle (ch 3) and pitch are mixed in the TX. You need to read the manual for your TX. You're looking for the entries for throttle curve and pitch curve. I have the 9CAP so I can't give specifics here, maybe someone else can.

The gyro plugs directly into ch4, then the TR servo plugs into the gyro.
ch 5 is the remote gain control for the gyro. If yours doesn't have this then just ignore it.

Karyn