Electrical Connections - JVC KD-S747 Instructions Manual

ENGLISH

ELECTRICAL CONNECTIONS

To prevent short circuits, we recommend that you disconnect the battery's negative terminal and make all
electrical connections before installing the unit. If you are not sure how to install this unit correctly, have it
installed by a qualified technician.
Note:
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 IN-CAR ENTERTAINMENT dealers.
• Replace the fuse with one of the specified rating. If the fuse blows frequently, consult your JVC IN-CAR
ENTERTAINMENT dealer.
• If noise is a problem...
This unit incorporates a noise filter in the power circuit. However, with some vehicles, clicking or other
unwanted noise may occur. If this happens, connect the unit's rear ground terminal (see connection diagram)
to the car's chassis using shorter and thicker cords, such as copper braiding or gauge wire. If noise still
persists, consult your JVC IN-CAR ENTERTAINMENT dealer.
• Maximum input of the speakers should be more than 45 W at the rear and 45 W at the front, with an
impedance of 4 Ω to 8 Ω.
• Be sure to ground this unit to the car's chassis.
• The heat sink becomes very hot after use. Be careful not to touch it when removing this unit.
Heat sink
Typical Connections /
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 to the car battery, speakers and power aerial (if any) in the
following sequence.
1
Black: ground
2
Yellow: to car battery (constant 12 V)
3
Red: to an accessory terminal
4
Blue with white stripe: to remote lead of other equipment or power aerial if any (200 mA max.)
5
Brown: to cellular phone system (For details, refer to the instructions of the cellular phone.)
6
Others: to speakers
2
Connect the aerial cord.
3
Finally connect the wiring harness to the unit.
Note: If your vehicle does not have any accessory terminal, move the fuse from the fuse position 1 (initial
position) to fuse position 2, and connect the red lead (A7) to the positive (+) battery terminal.
• The yellow lead (A4) is not used in this case.
Rear ground terminal
Aerial terminal
Line out
(see diagram )
2
To aerial
*1 : Before checking the operation of this unit prior to
installation, this lead must be connected, otherwise
power cannot be turned on.
B6 B5
White with black stripe White
Left speaker (front)
B1 B3 B5 B7
B2 B4 B6 B8
A5 A7
15 A fuse
A2 A4 A8
Black
3
1
Yellow*
Red
Blue with white stripe
6
B4 B3
Gray with black stripe Gray
Right speaker (front)
1
1
2
3
4
5
6
2
3
B1 B3 B5 B7
B2 B4 B6 B8
A5 A7
A2 A4 A8
To metallic body or chassis of the car
A8
1
To a live terminal in the fuse block connecting to the car battery
A4
(bypassing the ignition switch)
2
A7
3
A5
To remote lead of other equipment or power aerial if any
4
B8 B7
Green with black stripe Green
3
Ω Ω
1
*
Not included with this unit.
*
*
Fuse block
A2
5 To cellular phone system
B2
Purple with black stripe
Left speaker (rear)
Ignition switch
B1
Purple
Right speaker (rear)