The unit is designed for 12V DC, negative ground operation
system only. Before installing the unit, make sure your vehicle is
connected to 12V DC negative grounded electrical system.
The negative battery terminal must be disconnected before
making connections, which can reduce damaging to the unit due to
short circuit.
Be sure to connect the speaker (-) leads to the speaker (-)
terminal. Never connect the left and right channel speaker cables
each other or to the vehicle body. Do not block vents or radiator
panels. Blocking the will cause heat to build up inside and may
result in fire.
After the completion of the installation and begin to operate the
unit (including replacing the battery), please press the reset button
on the front panel with pointed objects (such as ball pen) to set the
unit to initial status.
Notes on installation