A:Answer Bernice, Basically the black plastic piece has an input, and an output on it. On mine, I connected a very short section of coaxial wire from my antenna to this plastic piece input section, (labelled antenna.) I then connected the long coax cable to the connection (labelled TV) on the plastic piece. Your long antenna wire then leads into the house, but before it connects to the tv, you connect it to the white piece, which is the actual amplifier. This white amplifier has to have power, so you need to attach either the supplied electrical plug to a wall outlet, or if your tv has USB connections you can give it power just by attaching the supplied usb connector to your tv. There is a schematic picture in one of the Best Buy images which might help to clarify. Good luck, mine worked very well
