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WARNING
! Use speakers over 50 W (output value) and
between 4 W to 8 W (impedance value).Do
not use 1 W to 3 W speakers for thisunit.
! The black cable is ground. When installing
this unit or power amp (sold separately),
make sure to connect the ground wire first.
Ensure that the ground wire is properly con-
nected to metal parts of the car’s body. The
ground wire of the power amp and the one of
this unit or any other device must be con-
nected to the car separately with different
screws. If the screw for the ground wire loos-
ens or falls out, it could result in fire, genera-
tion of smoke or malfunction.
Ground wire
Metal parts of car’s bod
y
POWER AMP
Other devices
(Another electronic
device in the car)
Important
! When installing this unit in a vehicle without
an ACC (accessory) position on the ignition
switch, failure to connect the red cable to the
terminal that detects operationof the ignition
key may result in battery drain.
O
N
S
T
A
R
T
O
F
F
ACC position NoACC position
! Use this unit with a 12-volt battery and nega-
tive grounding only. Failure to doso may re-
sult in a fire or malfunction.
! To prevent a short-circuit, overheatingor mal-
function, be sure to follow the directions
below.
— Disconnect thenegative terminal of thebat-
tery before installation.
— Secure thewiring with cableclamps or adhe-
sive tape.Wrap adhesive tapearound wiring
that comes intocontact with metalparts to
protect the wiring.
— Place allcables away frommoving parts,
such as theshift lever andseat rails.
— Place allcables away fromhot places, such
as near theheater outlet.
— Do notconnect the yellowcable to thebattery
by passing itthrough the holeto the engine
compartment.
— Cover anydisconnected cable connectors
with insulating tape.
— Do notshorten any cables.
— Never cutthe insulation of thepower cable of
this unitin order to sharethe power with
other devices.The current capacity ofthe
cable islimited.
— Use afuse of the ratingprescribed.
— Never wire thenegative speaker cabledirectly
to ground.
— Never bandtogether negative cablesof multi-
ple speakers.
! When this unit is on, control signalsare sent
through the blue/white cable. Connect this
cable to the system remote control of an ex-
ternal power amp or the vehicle’s auto-anten-
na relay control terminal (max. 300mA
12VDC). If the vehicle is equipped with a
glass antenna, connect it to the antenna
booster power supply terminal.
! Never connect the blue/white cable to the
power terminal of an external power amp.
Also, never connect it to the powerterminal
of the auto antenna. Doing so may result in
battery drain or a malfunction.
This unit
DEH-3400UB and DEH-34UB
4 56
2
3
1
DEH-2400UB and DEH-24UB
4 5
21
1 Power cord input
2 Rearoutput or subwoofer output
3 Front output
4 Antenna input
5 Fuse (10 A)
6 Wiredremote input
Hard-wired remote control adaptor can be
connected (sold separately).
Power cord
Perform these connections when not connect-
ing a rear speaker lead to a subwoofer.
1
8
9
c
d
6
32
4
5
7
a
b
e
f
h
g
LR
F
R
Perform these connections when using a sub-
woofer without the optional amplifier.
1
8
9
c
d
6
32
4
7
a
b
a
b
e
f
h
g
LR
F
SW
i
j
d
c
k l
1 Topower cord input
2 Left
3 Right
4 Front speaker
5 Rearspeaker
6 White
7 White/black
8 Gray
9 Gray/black
a Green
b Green/black
c Violet
d Violet/black
e Black (chassisground)
Connect to a clean, paint-free metal location.
f Yellow
Connect to the constant 12 V supply termi-
nal.
g Red
Connect to terminal controlled by ignition
switch (12 V DC).
h Blue/white
Connect to system control terminal of the
power amp or auto-antenna relay control ter-
minal (max. 300 mA 12 V DC).
i Subwoofer (4 Ω)
English
Installation
11
Section
Installation
En
03