There is one "wire bundle" that has three wires together that are attached to one connector. The wires are probably red, white, and black. This is Futaba standard wiring. It has a black connector on the end of it. Plug THIS into the throttle channel on your receiver. The connector has a little angled end on it that will only fit one way in the receiver. This is called "keying". Because it is "keyed", it will really only fit one way. Check it out before you plug anything into your receiver.

The other wires on the ESC are single wires, and are not in a bundle or together to a connector.

CGr