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PRECAUTIONS on power supply and speaker connections:
• DO NOT connect the speaker leads of the power cord to the car battery; otherwise, the
unit will be seriously damaged.
• Connect the black lead (ground), yellow lead (to car battery, constant 12 V), and red lead (to an
accessory terminal) correctly.
• BEFORE connecting the speaker leads of the power cord to the speakers, check the speaker
wiring in your car.
– If the speaker wiring in your car is as illustrated in Fig. 1 and Fig. 2 below, DO NOT
connect the unit using that original speaker wiring. If you do, the unit will be seriously
damaged.
Redo the speaker wiring so that you can connect the unit to the speakers as illustrated in Fig. 3.
– If the speaker wiring in your car is as illustrated in Fig. 3, you can connect the unit using
the original speaker wiring in your car.
– If you are not sure of the speaker wiring of your car, consult your car dealer.
+
+
L
-
-
+
+
R
-
-
Fig. 1
Connecting the leads /
Twist the core wires when connecting.
Connections Adding Other Equipment /
Amplifier /
You can connect an amplifier and other equipment to upgrade your car stereo system.
• Connect the remote lead (blue with white stripe) to the remote lead of the other equipment so
that it can be controlled through this unit.
• For amplifier only:
– Connect this unit's line-out terminals to the amplifier's line-in terminals.
– Disconnect the speakers from this unit, connect them to the amplifier. Leave the
speaker leads of this unit unused.
Signal cord (not supplied with this unit)
INPUT
L
R
F-OUT
L
R
INPUT
L
L
JVC Amplifier
R
R
You can connect another power amplifier for front
speakers.
CD changer or another external component /
Cord (supplied with the CD changer)
JVC CD changer
+
+
L
-
-
+
+
R
-
-
Fig. 2
Solder the core wires to connect them securely.
Rear speakers
JVC Amplifier
L
R
Remote lead
*2
Blue with white stripe
R-OUT
L
L
R
R
KW-XC939
Front speakers
*2
Line Input Adapter KS-U57 (not supplied with this unit)
or
F-OUT
R-OUT
L
L
R
R
+
+
L
-
-
+
+
R
-
-
Fig. 3
CAUTION /
• To prevent short-circuit, cover the terminals of the UNUSED leads with insulating tape.
•
Y-connector (not supplied with this unit)
* Cut the rear speaker leads of the car's ISO connector and connect them to the amplifier.
*
A
B
*
C
D
E
F
G
H
*
*
Rear speakers
Front speakers
KW-XC939
4
:
To power aerial if any
*2 Firmly attach the ground wire to the metallic body or to the
chassis of the car—to the place not coated with paint (if coated
with paint, remove the paint before attaching the wire). Failure
to do so may cause damage to the unit.
*
Signal cord (not supplied with this unit)
L
L
L
R
R
R
External component
L
R
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