Aeware in.tune User Manual page 26

installation & connections in.tune instructions
Wiring (Con't.)
Note:
This unit is designed to connect 4 speakers. If the installation
only requires 2 speakers, use the white and gray wire sets to
connect the speakers.
WARNING
Any wires left unconnected must be taped off or capped off to
prevent shorting.
DO NOT connect speaker ground wires together.
DO NOT connect speaker ground wires to the chassis of the
vehicule and to the power supply ground.
DO NOT connect front and rear speaker wires together.
FAILURE TO FOLLOW ANY OF THESE WARNINGS WILL RESULT
IN DAMAGE TO THIS UNIT AND VOIDS THE WARRANTY.
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