RE: Christmas Switch
To connect a safety or arming switch to the ESC you would need to locate the wire coming from the ESC (speed control) that connects to the receiver. It will have 3 colored wires either brown/red/orange or black/red/white. You will want to cut either the orange or white lead and insert (solder) the switch between the cut wires. Obviously you will have to extend the wires if you want to switch mounted on the outside of the plane. What this will do is when the switch is off there will be no signal coming from the receiver when you plug the battery in and the ESC will not arm. After the battery is connected you can turn the switch on and the ESC will then arm the motor.