Kenwood KAC-8404 Instruction Manual Download Page 3

Page: 3 / 16

English

Installation

Accessories

Part name

External View

Number of Items

Self-tapping screws
(ø4 × 16 mm)

Terminal cover
(Power terminal)

Speaker level input cable

Hexagon wrench

Installation procedure

Since there are large variety of settings and connections possible according to
applications, read the instruction manual well to select the proper setting and
connection.
1. Remove the ignition key and disconnect the negative

terminal of the battery

to prevent short circuits.

2. Set the unit according to the intended usage.
3. Connect the input and output wires of the units.
4. Connect the speaker wires.
5. Connect the power wire, power control wire and grounding wire following this

order.

6. Install the installation fittings in the unit.
7. Attach the unit.
8. Connect the negative

terminal of the battery.

CAUTION

• Do not install in the below locations;

(Unstable location, In a location that interferes with driving, In a location
that gets wet, In a dusty location, In a place that gets hot, In a place that
gets direct sunlight, In a location that gets hit by hot air)

• Do not install the unit under the carpet. Otherwise heat build-up occurs and

the unit may be damaged.

• Install this unit in a location which allows heat to easily dissipate.

Once installed, do not place any object on top of the unit.

• The surface temperature of the amplifier will become hot during use. Install

the amplifier in a place where people, resins, and other substances that are
sensitive to heat will not come into contact with it.

• This unit has cooling fan to decrease the internal temperature. Do not

mount the unit in a place where the cooling fan and ducts of the unit are
blocked. Blocking these openings will inhibit the cooling of the internal
temperature and result in malfunction.

• When making a hole under a seat, inside the trunk, or somewhere else in

the vehicle, check that there is nothing hazardous on the opposite side such
as a gasoline tank, brake pipe, or wiring harness, and be careful not to cause
scratches or other damage.

• Do not install near the dashboard, rear tray, or air bag safety parts.
• The installation to the vehicle should securely fasten the unit to a place in

which it will not obstruct driving. If the unit comes off due to a shock and
hits a person or safety part, it may cause injury or an accident.

• After installing the unit, check to make sure that electrical equipment

such as the brake lamps, turn signal lamps and windshield wipers operate
normally.

Protection function

The protection function is activated in the following situations:
This unit is equipped with a protection function for protecting this unit and your
speakers from various accidents or problems that can occur.
When the protection function is triggered, the Power indicator goes OFF and the
amplifier stops operating.
•  When a speaker wire may be short-circuited.
•  When a speaker output contacts ground.
•  When the unit malfunctions and a DC signal is sent to the speaker output.
•  When the internal temperature is high and unit won’t operate.
•  When a ground wire of the center unit (cassette receiver, CD receiver, etc.)

or this unit is not connected to a metal part serving as an electrical ground
passing electricity to the battery's negative

terminal.

280 mm
242 mm

Ø4.6

260.5 mm

212.5 mm

238 mm

Installation board, etc.
(thickness : 15 mm or more)

Self-tapping screw
(ø4 × 16 mm)

Hexagon socket
head cap screw
(M4 × 8 mm)

Hexagon wrench

Dressing cover