Speaker Terminals
It allows the connection speakers the amplifier.BASS BOOST
This for adjusting input signal bass boost level 45Hz, turn the controls bass boost level, 0dB +6dB. REMOTE control
This connects the control wire switch allows the amplifier turned and off the head unit. Note the polar the speakers. Power Connection
It connects +12V power wire from the battery.GB
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GB.
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8. Ground Connector
It connects GND wire from connection point the vehicle chassis