Bose 3-2-1 GSX SERIES III Owner's Manual page 12

SETUP
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Insert each plug into the connector on the proper
speaker.
The plug marked RIGHT goes into the speaker
placed to the right of your TV.
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Insert the remaining single plug into the connector
labeled SPEAKERS on the back of the Acousti-
mass ®module.
Fastener screws
5. Tighten each fastener screw by hand to secure
the plug.
CAUTION: Do not plug the Acoustimass module into an
AC power (mains) outlet until all other components are
connected.
6. Continue with _ on the next page.