Note the polar the speakers.
10. Speaker Terminals
It allows the connection speakers the amplifier.GB
6. REMOTE control
This connects the control wire switch allows the amplifier turned and off the head unit. Ground Connector
It connects GND wire from connection point the vehicle chassis.
8. Power Connection
It connects +12V power wire from the battery.
9.
7.
GB.BASS BOOST
This for adjusting input signal bass boost level 45Hz, turn the controls bass boost level, 0dB +6dB