The box contains the four (4) soldering connections for the two speakers. Desolder the old speakers and solder the new speakers in.

Be sure to match up the appropriately placed speaker to its correct positive or negative node. Mixing these up could distort audio or fry the speakers.

Solder over a piece of paper where you can mark each node with a red marker to denote positive nodes and black marker to denote negative nodes for the left or right speaker.