Connecting the Unit
Connecting the Power Terminal
• Always use the special red battery and ground
wire [RD-223], which is 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.
Connecting the Speaker Output
Terminals
1. Expose the end of the speaker wires
using nippers or a cutter by about
10 mm (3/8 inch) and twist.
2. Attach lugs to speaker wire ends.
Lugs not supplied.
• Use pliers, etc., to crimp lugs to wires.
10 mm
Fuse (30 A)
Engine
compart-
ment
Interior of
the vehicle
Drill a 14 mm
(1/2 inch) 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
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.
Using the Speaker Input
Connect the car stereo speaker output
wires to the amplifier using the supplied
speaker input connector.
• Do not connect both the RCA input and the
speaker input at the same time.
7
Connections when using the speaker
input
Speaker
output
terminal
Terminal cover
Terminal screw
Fuse (30 A)
Battery wire
Ground wire
Lug
Lug
Two-channel mode (stereo)
Two-channel mode (mono)
+
+
≠
≠
+
+≠
≠
Connecting the Speaker wires
The speaker output mode can be four-channel, three-channel (
mono) or two-channel (stereo, mono). Connect the speaker leads to suit the
mode according to the figures shown below.
• When either the RCA input or the speaker input is connected, RCA output
becomes functional. Do not connect both the RCA input and the speaker input at
the same time.
Four-channel mode
Three-channel mode
+
+
≠
+
≠
≠
+
+
≠
+
+≠
≠
≠
Input Select Switch
For two-channel input, slide this switch to
the left. For four-channel input, slide this
switch to the right.
(Left)
Speaker out A
(Right)
Speaker (Left)
Speaker (Right)
Input Select Switch
Slide this switch to the left.
Speaker wire
Speaker input
terminal A
Speaker output
terminal
Twist
Speaker wire
Lug
Speaker output
Car Stereo
Speaker input connector
To speaker input terminal of
this unit.
White:
Left
+
Gray:
Right
+
White/black:
Left
≠
Gray/black:
Right
≠
(Right)
Speaker out B
(Left)
Speaker input
terminal B
Speaker input
connector
Input Select Switch
For two-channel input, slide this switch to
the left. For four-channel input, slide this
switch to the right.
(Left)
Speaker out A
(Right)
Speaker input
terminal A
Speaker output
terminal
Speaker out B
(Mono)
Speaker input
terminal B
Speaker input
connector
Speaker input
terminal A
Speaker output
terminal
Speaker input
connector
Speaker (Mono)
Speaker (Mono)
Input Select Switch
Slide this switch to the left.
Speaker input
terminal A
Speaker output
terminal
Speaker input
connector
(3/8 inch)
