Solderless Terminal Connections
• Do not connect a cord having an exposed core
wire to the power terminals of this amplifier
(Power terminal, GND terminal, System remote
control terminal). Disconnection or breakage of
the core wire can cause a fire or short-circuit.
• Since the wire will become loose over time, it
must be periodically inspected and tightened as
• Do not solder or bind the ends of the twisted
• Fasten while making sure to not to clamp the
insulating sheath of the wire.
• Use the supplied hexagonal wrench to tighten and
loosen the terminal screw of the amplifier.
Securely fasten the wire with the terminal screw.
However, since excessively tightening the termi-
nal screw of the System remote control has the
risk of damaging the wire, be careful not to tight-
en excessively by observing the status of the wire
Connecting the Power Terminal
• We recommend that you use the special red bat-
tery and ground wire [RD-228], which is sold
separately. Connect the battery wire directly to
the car battery positive terminal (+) and the
ground wire to the car body.
• Recommended wires size (AWG: American Wire
Gauge) is as follows. The battery wire and the
ground wire must be same size.
• Use a 10 AWG to 20 AWG wire for the system
remote control wire.
Battery Wire and Ground Wire Size
1. Pass the battery wire from the
engine compartment to the interior
of the vehicle.
• After making all other connections to the
amplifier, connect the battery wire terminal
of the amplifier to the positive (+) terminal of
Fuse (40 A) × 2
Insert the O-ring rubber
grommet into the vehicle
2. Connect the wires to the terminal.
• Fix the wires securely with the terminal
Failure to securely fasten the battery wire to the ter-
minal using the terminal screws could cause the ter-
minal area to overheat and could result in damage
and injury including minor burns.
Drill a 13 mm
hole into the