Set custom boundaries around your property that allows your dog to be safe in your yard. Installation: Fence Wire - The fence wire must make a continuous loop around your property for your system to operate. The signal is delivered from the terminal of the transmitter, through the fence wire, back to the other terminal on the transmitter. When this is accomplished, the wire continuity light will emit a constant red indicator. The wire should be buried approximately 4-6 inches into the ground, or deep enough to protect it from being damaged by any machinery or dug up by your dog. (The wire does not have to be buried in order to work.)