Pioneer DEH-2400UB - Manual (Page 11)

Connections
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 this unit.
! 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 body
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 operation of the ignition
key may result in battery drain.
O N
S T A R T
O FF
ACC position No ACC position
! Use this unit with a 12-volt battery and nega-
tive grounding only. Failure to do so may re-
sult in a fire or malfunction.
! To prevent a short-circuit, overheating or mal-
function, be sure to follow the directions
below.
— Disconnect the negative terminal of the bat-
tery before installation.
— Secure the wiring with cable clamps or adhe-
sive tape. Wrap adhesive tape around wiring
that comes into contact with metal parts to
protect the wiring.
— Place all cables away from moving parts,
such as the shift lever and seat rails.
— Place all cables away from hot places, such
as near the heater outlet.
— Do not connect the yellow cable to the battery
by passing it through the hole to the engine
compartment.
— Cover any disconnected cable connectors
with insulating tape.
— Do not shorten any cables.
— Never cut the insulation of the power cable of
this unit in order to share the power with
other devices. The current capacity of the
cable is limited.
— Use a fuse of the rating prescribed.
— Never wire the negative speaker cable directly
to ground.
— Never band together negative cables of multi-
ple speakers.
! When this unit is on, control signals are 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. 300 mA
12 V DC). 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 power terminal
of the auto antenna. Doing so may result in
battery drain or a malfunction.
This unit
DEH-3400UB and DEH-34UB
4 5 6
2 3 1
DEH-2400UB and DEH-24UB
4 5
2 1
1 Power cord input
2 Rear output or subwoofer output
3 Front output
4 Antenna input
5 Fuse (10 A)
6 Wired remote 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
3 2
4
5
7
a
b
e
f
h
g
L R
F
R
Perform these connections when using a sub-
woofer without the optional amplifier.










1
8
9
c
d
6
3 2
4
7
a
b
a
b
e
f
h
g
L R
F
SW
i
j
d
c
k l
1 To power cord input
2 Left
3 Right
4 Front speaker
5 Rear speaker
6 White
7 White/black
8 Gray
9 Gray/black
a Green
b Green/black
c Violet
d Violet/black
e Black (chassis ground)
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