You can have it on a Y connection to a servo or straight to the rx. All it needs is the power from the rx and the white wire is a signal lead going to the aux on the ESC. Its a rather simple device, 2 wires and the connector plus key. One thing I had to do prior to finalizing the install was to cover the hole in the frame with electrical tape. I had to ensure that the metal from the arm lock would not come in contact with the Carbon fiber. The only thing I had to do was put a hole in the frame, which I did not want to do. Unfortunately if I want to use it I had to do it.