JVC KD-G4242 Installation & Connection Manual

KD-G424

Installation/Connection Manual

GET0351-002A

[UI]

This unit is designed to operate on 12 V DC, NEGATIVE ground electrical systems. If your vehicle does
not have this system, a voltage inverter is required, which can be purchased at JVC car audio dealers.

WARNINGS

To prevent short circuits, we recommend that you disconnect the battery’s negative terminal and make all
electrical connections before installing the unit.

• Be sure to ground this unit to the car’s chassis again after installation.

Notes:

• Replace the fuse with one of the specified rating. If the fuse blows frequently, consult your JVC car audio
dealer.

• It is recommended to connect to the speakers with maximum power of more

than 50 W (both at the rear and at the front, with an impedance of 4 Ω
to 8 Ω). If the maximum power is less than 50 W, change “AMP GAIN”
setting to prevent the speakers from being damaged
(see page 13 of the INSTRUCTIONS).

• To prevent short-circuit, cover the terminals of the UNUSED leads

with insulating tape.

• The heat sink becomes very hot after use. Be careful not to touch it when

removing this unit.

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.

• BEFORE connecting the speaker leads of the power cord to the speakers, check the speaker wiring in
your car.

Heat sink

1105DTSMDTJEIN
EN

© 2005 Victor Company of Japan, Limited

INSTALLATION (IN-DASH MOUNTING)

The following illustration shows a typical installation. If you have any questions or require information
regarding installation kits, consult your JVC car audio dealer or a company supplying kits.

• If you are not sure how to install this unit correctly, have it installed by a qualified technician.

1

*

When you stand the unit,
be careful not to damage
the fuse on the rear.

Parts list for installation and connection

The following parts are provided for this unit. After checking them, please set them correctly.

A / B
Hard case/Control panel

C

Sleeve

D

Trim plate

Do the required electrical
connections.

Bend the appropriate tabs to hold
the sleeve firmly in place.

Removing the unit

Before removing the unit, release the rear section.

E

Power cord

I

Rubber cushion

F

Washer (ø5)

J

Handles

G

Lock nut (M5)

K

Remote controller

H

Mounting bolt
(M5 × 20 mm)

L

Battery

TROUBLESHOOTING

• The fuse blows.
* Are the red and black leads connected correctly?

• Power cannot be turned on.
* Is the yellow lead connected?

• No sound from the speakers.
* Is the speaker output lead short-circuited?

• Sound is distorted.

* Is the speaker output lead grounded?
* Are the “–” terminals of L and R speakers grounded in common?

• Noise interfere with sounds.
* Is the rear ground terminal connected to the car’s chassis using shorter and thicker cords?

• This unit becomes hot.

* Is the speaker output lead grounded?
* Are the “–” terminals of L and R speakers grounded in common?

• This unit does not work at all.
* Have you reset your unit?

Insert the two handles, then pull them as
illustrated so that the unit can be removed.

When using the optional stay

Fire wall

Dashboard

Install the unit at an
angle of less than 30˚.

1

Stay (option)

Screw (option)

When installing the unit without
using the sleeve

In a Toyota car for example, first remove the car
radio and install the unit in its place.

2

*

Not supplied

for this unit.

2

Flat type screws (M5 × 8 mm)

2

Bracket*

Pocket

Note :

When installing the unit on the mounting bracket,
make sure to use the 8 mm-long screws. If longer
screws are used, they could damage the unit.

*

Bracket*

Flat type screws
(M5 × 8 mm)

2

2

*

ELECTRICAL CONNECTIONS

Typical connections

A

Before connecting: Check the wiring in the vehicle carefully. Incorrect connection may cause serious damage to this unit.

The leads of the power cord and those of the connector from the car body may be different in color.

1 Connect the colored leads of the power cord in the order specified in the illustration below.
2 Connect the antenna cord.
3 Finally connect the wiring harness to the unit.

To external components (see diagram )

Rear ground

15 A fuse

Antenna terminal

Line out (see diagram

)

1

*

Not supplied for this unit.

Ignition switch

2

*

Before checking the operation of this unit prior to
installation, this lead must be connected, otherwise
power cannot be turned on.

White with black stripe

B

Connecting the external amplifier or subwoofer

Black

2

*

Yellow

Red

Blue

Blue with white stripe

Right speaker (front)Left speaker (front)

To metallic body or chassis of the car

To a live terminal in the fuse block connecting to the car battery
(bypassing the ignition switch) (constant 12 V)

To an accessory terminal in the fuse block

To the automatic antenna if any (250 mA max.)

You can connect an amplifier 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.

• Disconnect the speakers from this unit, connect them to the amplifier. Leave the speaker leads of this unit unused.

Set “L/O MODE” to “REAR” (See page 13 of the INSTRUCTIONS.)

Remote lead

Remote lead (Blue with white stripe)

Y-connector (not supplied for this unit)

You can connect a power amplifier for rear speakers.

Fuse block

To the remote lead of other equipment (200 mA max.)

PurplePurple with black stripeGreenGreen with black stripeGrayGray with black stripeWhite

Right speaker (rear)Left speaker (rear)

3

*

Firmly attach the ground wire to the metallic body or to

the chassis of the car—to the place uncoated with paint (if
coated with paint, remove the paint before attaching the
wire). Failure to do so may cause damage to the unit.

4

*

Signal cord (not supplied for this unit)

To the remote lead of other equipment or automatic antenna if any

Set “L/O MODE” to “WOOFER” (See page 13 of the INSTRUCTIONS.)

You can also connect a subwoofer to the REAR LINE OUT
terminals.

JVC Amplifier

Rear speakers

C

Connecting the external components

CD changer, Apple iPod®, or JVC D. player

• Set “CHANGER” for the external input setting (See page 13 of the INSTRUCTIONS.)

You can connect these components as illustrated below.
The iPod*
KS-PD100 (for iPod) or KS-PD500 (for D. player).

5

or D. player can be connected using an interface adapter (not supplied)—

JVC CD changer

CD changer jack

or

Front speakers

Subwoofer

Apple iPod
(separately purchased)

JVC D. player
(separately purchased)

JVC Amplifier

CAUTION :

• Before connecting the external
components, make sure that the unit is
turned off.

5

*

6

*

Connecting cord supplied for your CD

iPod is a trademark of Apple Computer,
Inc., registered in the U.S. and other
countries.

changer

Other external component

• Set “EXT IN” for the external input setting (See page 13 of the INSTRUCTIONS.)

CD changer jack

External component

3.5 mm stereo mini plug

2

External component

7

*

Line Input Adapter KS-U57 (not supplied for this unit)

8

*

AUX Input Adapter KS-U58 (not supplied for this unit)