Attach the antenna app. to the transformer using the insulated wires designed for this purpose.  Position the gap so that the spark starts at the bottom of the antenna when the transformer is turned on. The spark should travel upward the length of the antenna if they are set correctly.  Always turn off and unplug the transformer when working on it as it is putting out lethal voltages.  The large plastic pipe may be placed over the antenna to keep air currents in the room from affecting the travel of the spark.

The transformer may be replaced with the induction coil. Although it is not as powerful you can still get the spark to travel 3/4 of the way up the antenna if it is adjusted properly.  There is also a smaller set of antenna that may be used with the induction coil if you do not want to use the large set.  A Plexiglas tube cover will help this demo immensely.