Pioneer GM-X944 - Manual (Page 2)

Connecting the Power Terminal
• Always use the special red battery and ground
wires ([RD-223]
×
2), which are sold separately.
Connect the battery wire directly to the car battery
positive terminal (+) and the ground wire to the
car body.
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
the battery.
2. Twist the battery wire, ground wire
and system remote control wire.
3. Attach lugs to wire ends. Lugs not
supplied.
• Use pliers, etc., to crimp lugs to wires.
4. Connect the wires to the terminal.
• Fix the wires securely with the terminal
screws.
Fuse (30 A)
Engine
compart-
ment
Interior of
the vehicle
Drill a 14 mm
hole into the
vehicle body.
Insert the O-ring rubber
grommet into the vehicle
body.
Twist
Positive terminal
GND terminal
Power terminal
Battery wire
System remote
control terminal
System remote
control wire
Ground wire
Fuse (30 A)
Battery wire
Ground wire
Lug
Lug
Connecting the Unit
CAUTION
• Disconnect the negative (–) terminal of the battery
to avoid the risk of short-circuit and damage to
the unit.
• Secure the wiring with cable clamps or adhesive
tape. To protect the wiring, wrap adhesive tape
around it where they lie against metal parts.
• Do not route wires where they will get hot, for
example where the heater will blow over them. If
the insulation heats up, it may become damaged,
resulting in a short-circuit through the vehicle
body.
• Make sure that wires will not interfere with mov-
ing parts of the vehicle, such as the gearshift,
handbrake or seat sliding mechanism.
• Do not shorten any wires. Otherwise the protec-
tion circuit may fail to work when it should.
• Never feed power to other equipment by cutting
the insulation of the power supply wire to tap
from the wire. The current capacity of the wire
will be exceeded, causing overheating.
Speaker Channel Speaker Type Power
Four-channel
Subwoofer Nominal input: Min. 95 W
Other than subwoofer Max. input: Min. 150 W
Two-channel
Subwoofer Nominal input: Min. 330 W
Other than subwoofer Max. input: Min. 500 W
Three-channel Subwoofer Nominal input: Min. 95 W
Speaker output A Other than subwoofer Max. input: Min. 150 W
Three-channel Subwoofer Nominal input: Min. 330 W
Speaker output B Other than subwoofer Max. input: Min. 500 W
Connection Diagram
Fuse (30 A)
×
2
Grommet
RCA input
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.
Ground wire (black) [RD-223] (sold separately).
Connect to metal body or chassis.
Amplifier with
RCA input jacks
Fuse (30 A)
×
3
Car stereo with
RCA output jacks
External Output
For details on how to connect to RCA
input jacks A and B, see the
“Connecting the Speakers and Input
wires” section.
Connecting wires with RCA pin
plugs (sold separately).
RCA input jack B RCA output jack
Speaker output terminal
See the “Connecting the
Speakers and Input
wires” section for
speaker connection
instructions.
System remote control wire (sold separately)
Connect the male terminal of this wire to the system remote control termi-
nal of the car stereo (SYSTEM REMOTE CONTROL). The female termi-
nal can be connected to the auto-antenna relay control terminal. If the car
stereo does not have a system remote control terminal, connect the male
terminal to the power terminal through the ignition switch.
Fuse (30 A)
×
2
Front side
Connecting wires with RCA pin
plugs (sold separately).
RCA input jack A
Back side
Connecting the Speaker Output
Terminals
1. Expose the end of the speaker wires
by about 10 mm and twist using
nippers or a cutter.
2. Attach lugs to speaker wire ends.
Lugs not supplied.
• Use pliers, etc., to crimp lugs to wires.
3. Connect the speaker wires to the
speaker output terminals.
• Connect the speaker wires, passing them
through the terminal cover.
• Fix the speaker wires securely with the termi-
nal screws.
4. Push on the terminal cover.
10 mm
Twist
Speaker
output terminal
Terminal cover
Terminal screw
Speaker wire
Lug
Speaker wire
To prevent damage
• Do not ground the speaker wire directly or con-
nect a negative (–) lead wire for several speakers.
• This unit is for vehicles with a 12-volt battery and
negative grounding. Before installing it in a recre-
ational vehicle, truck or bus, check the battery
voltage.
• If the car stereo is kept on for a long time while
the engine is at rest or idling, the battery may go
dead. Turn the car stereo off when the engine is at
rest or idling.
• If the system remote control wire of the amplifier
is connected to the power terminal through the
ignition switch (12 V DC), the amplifier will
always be on when the ignition is on— regardless
of whether the car stereo is on or off. Because of
this, the battery could go dead if the engine is at
rest or idle.
• Speakers to be connected to the amplifier should
conform with the standards listed below. If they
do not conform, they may catch fire, emit smoke
or become damaged. The speaker impedance must
be 1 to 8 ohms. But in case of two-channel and
other bridge connections, the speaker impedance
must be 2 to 8 ohms.
• Install and route the separately sold battery wire
as far away as possible from the speaker wires.
Install and route the separately sold battery wire,
ground wire, speaker wires and the amplifier as
far away as possible from the antenna, antenna
cable and tuner.
• Cords for this product and those for other prod-
ucts may be different colors even if they have the
same function. When connecting this product to
another product, refer to the supplied Installation
manuals of both products and connect cords that
have the same function.