To use the copperhead, you must insulate one side of each microclip by using a piece of tape on the jaw. Then just attach the clips to the tail of the igniter, with the insulated sides of the clips on opposite sides of the igniter. At this point, you'll have continuity and you can fire off the igniter. I recommend a 12V car battery to set these types of igniters off, as they take a bit more current.
Watch the QuickTime movie below to see how to properly install and use a copperhead igniter.