Pioneer GM-D8400M Guida Utente

• 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
necessary. 

• Do not solder or bind the ends of the twisted

wires.

• 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
when tightening.

• 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.

Wire Length 

less than

less than

less than

4.5 m

7.2 m

11.4 m

less than

less than

less than

14 ft.

23 ft.

37 ft.

Wire Size

8 AWG

6 AWG

4 AWG

• After making all other connections to the 

amplifier, connect the battery wire terminal
of the amplifier to the positive (+) terminal of
the battery.

• Fix the wires securely with the terminal

screws.

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.

Engine
compartment

Interior of
the vehicle

Drill a 13 mm
(1/2 in.) hole
into the vehi-
cle body.

Insert the O-ring rubber
grommet into the vehicle
body.

Positive (+)
terminal

Fuse (40 A)

× 2

GND terminal

Power terminal

Battery wire

System remote 
control terminal

System remote 
control wire

Ground wire

Terminal screws