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9
Connecting the Unit
Connection Diagram
•This diagram shows connections using external output (subwoofer output). Slide the input switch to the left
(RCA).
•When you connect with speaker output, connections defers from the diagram. For details, see the “Using
the Speaker Input” section. In either case, you need to set the input switch. For details, see the “Setting the
Unit” section.
Grommet
RCA input
Special red battery wire [RD-228] (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-228] (sold separately)
Connect to metal body or chassis.
Amplifier with
RCA input jacks
Car stereo with
RCA output jacks
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
terminal, connect the male terminal to the power terminal through the ignition switch.
Fuse (40 A) × 2
Connecting wire with
RCA pin plugs (sold
separately).
Speaker output terminal
See the “Connecting the Speakers
and Input Wires” section for
speaker connection instructions.
Fuse (30 A) × 2
External Output
If only one input plug is used, do
not connect anything to RCA
input jack B.
RCA input jack B
RCA output jack
RCA input jack A