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Connecting the Unit
CAUTION
• Disconnect the negative (–) terminal of the battery
• Make sure that wires will not interfere with mov-
to avoid the risk of short-circuit and damage to
ing parts of the vehicle, such as the gearshift,
the unit.
handbrake or seat sliding mechanism.
• Secure the wiring with cable clamps or adhesive
• Do not shorten any wires. Otherwise the protec-
tape. To protect the wiring, wrap adhesive tape
tion circuit may fail to work when it should.
around it where they lie against metal parts.
• Never feed power to other equipment by cutting
• Do not route wires where they will get hot, for
the insulation of the power supply wire to tap
example where the heater will blow over them. If
from the wire. The current capacity of the wire
the insulation heats up, it may become damaged,
will be exceeded, causing overheating.
resulting in a short-circuit through the vehicle
• Never replace the fuse with one of greater value
body.
or rating than the original fuse. Use of an improp-
er fuse could result in overheating and smoke and
could cause damage to the product and injury
including burns.
CAUTION:
To prevent damage and/or injury
• Do not ground the speaker wire directly or con-
• Connect a subwoofer with a 380 W or larger nom-
nect a negative (–) lead wire for several speakers.
inal input and an impedance between 1 and 8
• This unit is for vehicles with a 12-volt battery and
ohms to the amplifier. If the nominal input and
negative grounding. Before installing it in a recre-
impedance are out of the above ranges, the sub-
ational vehicle, truck or bus, check the battery
woofer may catch fire, emit smoke or become
voltage.
damaged.
• If the car stereo is kept on for a long time while
• Install and route the separately sold battery wire
the engine is at rest or idling, the battery may go
as far away as possible from the speaker wires.
dead. Turn the car stereo off when the engine is at
Install and route the separately sold battery wire,
rest or idling.
ground wire, speaker wires and the amplifier as
• If the system remote control wire of the amplifier
far away as possible from the antenna, antenna
is connected to the power terminal through the
cable and tuner.
ignition switch (12 V DC), the amplifier will
• Cords for this product and those for other prod-
always be on when the ignition is on— regardless
ucts may be different colors even if they have the
of whether the car stereo is on or off. Because of
same function. When connecting this product to
this, the battery could go dead if the engine is at
another product, refer to the supplied Installation
rest or idling.
manuals of both products and connect cords that
have the same function.
Connection Diagram
Ground wire (black) [RD-223] (sold separately)
Connect to metal body or chassis.
Fuse (30 A)
Special red battery wire [RD-223] (sold separately)
After making all other connections at the amplifier,
connect the battery wire terminal of the amplifier to
the positive (+) terminal of the battery.
Fuse (30 A)
Grommet
Fuse (25 A) × 2
RCA input jack
Speaker terminal
See the "Connecting the Speaker
wires" section for speaker connec-
tion instructions.
System remote control wire (sold separately)
Connect the male terminal of this wire to the system remote control
terminal of the car stereo (SYSTEM REMOTE CONTROL). The
female terminal can be connected to the auto-antenna relay control
terminal. If the car stereo does not have a system remote control ter-
minal, connect the male terminal to the power terminal through the
ignition switch.
Car stereo with
RCA output jacks
Connecting wires with RCA
External Output
pin plugs (sold separately).
(Subwoofer output)
Connecting the Power Terminal
3. Attach lugs to wire ends. Lugs not
supplied.
• Always use the special red battery and ground
• Use pliers, etc., to crimp lugs to wires.
wire [RD-223], which is sold separately. Connect
the battery wire directly to the car battery positive
Lug
terminal (+) and the ground wire to the car body.
1. Pass the battery wire from the
engine compartment to the interior
of the vehicle.
Lug
• After making all other connections to the
amplifier, connect the battery wire terminal of
Battery wire
the amplifier to the positive (+) terminal of
the battery.
Engine
Fuse (30 A)
compart-
Interior of
4. Connect the wires to the terminal.
the vehicle
ment
• Fix the wires securely with the terminal
screws.
GND terminal
Fuse (30 A)
Drill a 14 mm
System remote
Positive terminal
hole into the
control terminal
vehicle body.
Insert the O-ring rubber
grommet into the vehicle
System remote
body.
control wire
Ground wire
2. Twist the battery wire, ground wire
and system remote control wire.
Twist
Battery wire
Connecting the Speaker Terminals
3. Connect the speaker wires to the
1. Expose the end of the speaker wires
using nippers or a cutter by about
10 mm and twist.
Twist
Ground wire
10 mm
2. Attach lugs to speaker wire ends.
Lugs not supplied.
• Use pliers, etc., to crimp lugs to wires.
Lug
Speaker wire
Power terminal
speaker terminals.
• Fix the speaker wires securely with the termi-
nal screws.
Terminal screw
Speaker
terminal
Speaker wire
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