Cut three lengths of 16-gauge speaker wire with a wire cutter. You will need one long enough to reach the first speaker, one that will reach from the first to the second speaker, and one length of wire that will reach from the second speaker back to the speaker jack.

Strip the ends of all of the speaker wires with a wire stripper, to expose the bare wire underneath the sleeve. This will allow you to make good contact between the speaker wire and the terminals on the speakers themselves and the speaker jack.

Locate the input and output terminal on the inside of the speaker jack. You will be attaching wires to these terminals, so it is important to verify which is the input and which is the output; they should be clearly marked as such.

Attach one of the two longer speaker wires to the input terminal on the inside of the speaker jack. To attach correctly, wrap the bare wire around the terminal several times. Attach the other end of that speaker wire to the positive terminal of the first speaker. Secure them well, as bass frequencies can knock them loose.

Attach the smallest cut speaker wire from the negative terminal of the first speaker to the positive terminal of the second speaker. The sound will travel from the first speaker to the second speaker this way, in a series.

Attach the remaining piece of speaker wire to the negative terminal on the second speaker and attach the other end to the remaining terminal on the speaker jack. This completes the audio loop and will allow the sound to flow to the speakers.