Pioneer MVH-170UB Owner'S Manual Download Page 15

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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.

•

Use of this unit in conditions other than
the following could result in fire or
malfunction.
– Vehicles with a 12-volt battery and

negative grounding.

– Speakers with 50 W (output value) and

4 Ω to 8 Ω (impedance value).

•

To prevent a short-circuit, overheating or
malfunction, be sure to follow the
directions below.
– Disconnect the negative terminal of the

battery before installation.

– Secure the wiring with cable clamps or

adhesive 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

multiple 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 external power amp or the
vehicle’s auto-antenna relay control
terminal (max. 300mA 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.

•

The black cable is ground. Ground cables
for this unit and other equipment
(especially, high-current products such as
power amps) must be wired separately. If
they are not, an accidental detachment
may result in a fire or malfunction.

This unit

Connections/Installation

Connections

ACC position

No ACC position

MVH-X370BT/170UI/170UBG/170UB

Microphone 4m (13 ft. 1 in.) (Only for
MVH-X370BT)
Rear output or subwoofer output
Front output (Only for MVH-X370BT/
170UI)
Antenna input
Power cord input
Fuse (10 A)
Wired remote input (Only for MVH-
X370BT/170UI)
Hard-wired remote control adapter can
be connected (sold separately).
Microphone input (Only for MVH-
X370BT)

Power cord

Perform these connections when not
connecting a rear speaker lead to a
subwoofer.

To power cord input
Depending on the kind of vehicle, the
function of

and

may be different.

In this case, be sure to connect

and

to .

Yellow
Back-up (or accessory)
Yellow

Connect to the constant 12 V supply
terminal.
Red
Accessory (or back-up)
Red
Connect to terminal controlled by the
ignition switch (12 V DC).
Connect leads of the same color to each
other.
Black (chassis ground)
Blue/white
The pin position of the ISO connector
will differ depending on the type of
vehicle. Connect

and

when Pin 5

is an antenna control type. In another
type of vehicle, never connect

and

Blue/white
Connect to the system control terminal
of the power amp (max. 300 mA 12 V
DC).
Blue/white
Connect to the auto-antenna relay
control terminal (max. 300 mA 12 V DC).
Yellow/black (Only for MVH-170UI)
If you use equipment with a Mute
function, wire this lead to the Audio
Mute lead on that equipment. If not,
keep the Audio Mute lead free of any
connections.
Speaker leads
White: Front left
White/black: Front left
Gray: Front right
Gray/black: Front right
Green: Rear left