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Connection diagram
1 Special red battery wire
RD-223 (sold separately)
After completing all other amplifier connec-
tions, finally connect the battery wire terminal
of the amplifier to the positive (+) battery
terminal.
2 Ground wire (Black)
RD-223 (sold separately)
Connect to metal body or chassis.
3 Car stereo with RCA output jacks (sold sepa-
rately)
4 External output
5 Connecting wire with RCA pin plugs (sold se-
parately)
6 Speaker input terminal (use a connector in-
cluded)
Please see the following section for speaker
connection instructions. Refer to Connections
when using the speaker input wire on page 8.
7 RCA input jack
8 System remote control wire (sold separately)
Connect male terminal of this wire to the sys-
tem remote control terminal of the car stereo.
The female terminal can be connected to the
auto-antenna relay control terminal. If the car
stereo lacks a system remote control terminal,
connect the male terminal to the power term-
inal via the ignition switch.
9 Speaker output terminals
Please see the following section for speaker
connection instructions. Refer to Connections
when using the speaker input wire on page 8.
a Fuse (25 A) × 2
b Fuse (30 A) × 2
c Grommet
d Rear side
e Front side
Before connecting the
amplifier
WARNING
! Secure the wiring with cable clamps or adhe-
sive tape. To protect the wiring, wrap sections
in contact with metal parts in adhesive tape.
! Never cut the insulation of the power supply
to feed power to other equipment. Current ca-
pacity of the wire is limited.
CAUTION
! Never shorten any wires, the protection circuit
may malfunction.
! Never ground speaker wire directly or band to-
gether multiple speakers’ negative (*) lead
wires.
! If the system remote control wire of the ampli-
fier is connected to the power terminal via the
ignition switch (12 V DC), the amplifier will re-
main on with the ignition whether the car
stereo is on or off, which may exhaust battery
if the engine is at rest or idling.
! Install and route the separately sold battery
wire as far as possible from the speaker wires.
Install and route the separately sold battery
wire, ground wire, speaker wires and the am-
plifier as far away as possible from the anten-
na, antenna cable and tuner.
En
6
Section
03
Connecting the units