Radio Shack 120-2130A User Manual

AM/FM Cassette Car Stereo w/22 Watts x 2 Max Power
(120-2130A) Features Faxback Doc. # 60662

Your RadioShack AM/FM Cassette Car Stereo has many practical, easy-to-use
features, and you can install it in almost any vehicle. The stereo's CD
input jack lets you connect any portable CD player with a DC adapter. The
tuner's digital synthesized PLL (phase-locked-loop) circuitry gives you
precise tuning and drift-free reception.

Balance, tone, fader and volume controls let you adjust the sound for
maximum listening pleasure. The stereo's features include:

CD Input Jack - lets you easily connect a portable compact disc
(CD) player.

Continuous Auto-Reverse - allows continuous play of both sides of a
cassette tape.

High Power - provides 32 watts of total power to give you
excellent audio response for all types of music.

Manual/Automatic Memory - lets you manually or automatically store six AM
Programming and 12 FM stations in memory so you can quickly
tune to those stations with the press of a
button.

Automatic Travel - lets you store an additional six AM stations and
Programming six FM stations separate from the manual/
automatic programmed memory groups.

Radio Monitor - lets you hear the radio while you fast forward
or rewind a cassette tape.

Preamp Outputs - lets you connect an optional equalizer/booster
with phono plugs.

Lighted Display with - lets you easily see the clock, radio and
Clock cassette deck function selections.

Scan Tuning - scans forward on the selected band, stopping for
several seconds on each station.

Seek Tuning - searches forward to the next strong station in
the selected band.

Automatic Seek and Scan - adjusts your stereo so the first time it
Sensitivity searches a band it stops only on strong local
stations, and the next time it searches it stops
on weaker distant stations.

Line-Level Outputs - lets you connect the stereo to external power
amplifiers, boosters, or other accessories that
have line input jacks.

Balance Control - lets you balance the sound between your left and
right speakers.

Locking Fast-Forward/ - lets you quickly move the tape to either the
Reverse beginning or the end without holding the fast
forward button.

Advanced FM Optimizer - automatically adjusts the tuner's stereo
Circuitry separation and high-frequency response to give
you the best possible sound, regardless of the
signal level.

Push Band Selector - lets you easily select AM or FM stations with
the push of a button.

Adjustable Shaft - fits almost all shaft type installations.
Spacing

Built-In Loudness - automatically boosts your stereo's high and low
Circuitry frequencies for better sound at low volume
levels.

AM/FM Cassette Car Stereo w/22 Watts x 2 Max Power
(120-2130A) Installation Faxback Doc. # 60663

Preparation

CAUTION: Improper installation can damage your stereo and other components
in your vehicle's autosound system.

Before you install your stereo, read all the instruction's in this owner's
manual. You should be able to answer all of these questions about your
vehicle's electrical and sound systems:

Does my vehicle have a 12-volt negative ground electrical system?

Which terminal in my Vehicle's fuse box supplies power even when the
ignition is turned off?

Which terminal in my vehicle's fuse box is for accessories?

How do I connect a wire to the fuse box?

Also, be aware that installation in your vehicle might require cutting or
modifying your vehicle.

Place the stereo as close as possible to the selected mounting location.
We recommend that you install the stereo by temporarily connecting it to
ground and power, optional components, and your speakers. Then test the
connections. Next, disconnect the stereo, mount it in your vehicle, and
then reconnect it. The instructions in this manual are arranged in this
order.

CAUTION: Be sure your speaker can handle 32 watts of power (16 watts per
channel). Each speaker must have an impedance of at least 4 Ohms
Your local RadioShack store carries a full line of speakers.

Setting the Shaft Spacing

The size of existing openings in the dash or installation kit determines
the best spacing between the stereo's shafts (knobs).

The space between the shafts is preset to 5-13/16 inches (148 mm) at the
factory. You can change the spacing to 5-5/8 inches (142 mm), to 5-3/8
inches (136 mm), or to 5-1/8 inches (130 mm).

Follow these steps if you need to change the shaft spacing.

1. Loosen each shaft nut about halfway up the shaft.

2. Move each shaft positioner to the correct pair of holes.

3. Hold each shaft positioner in place as you re-tighten its shaft nut.

Preparing the Mounting Area

Before you mount the stereo, make sure you have all the necessary
materials. Then confirm that the stereo fits your vehicle's mounting area.

Note: If the mounting area is too large, you might be able to mount the
stereo with the supplied gasket or an in-dash installation kit,
available at your local RadioShack store. Follow the installation
kit's instructions to mount the stereo.

Routing Speaker Wires

If you install speakers, avoid routing the speaker wires near moving parts
or sharp edges. You can usually route wires along the channel beneath the
vehicle's door facings by carefully removing the molding that holds the
carpet in place. After you route the speaker wires, replace the molding.

Making The Connections

The supplied harness with the 14-pin connector includes all the lead wires
you need to connect the stereo to ground, power, optional components, and
speakers.

IMPORTANT: Do not cut the lead wires. If you cut any wire, you cannot
obtain a refund or exchange on this product. However, your
local RadioShack store will provide warranty service if you
cut a wire and find the product is defective.

You might need additional wire, depending on your individual autosound
system, to complete the connections. Your local RadioShack store carries a
full line of wire and wire management accessories.

CAUTIONS: For added safety and to protect your stereo, disconnect the
cable from your vehicle battery's negative (-) terminal before
you begin.

You must connect the GROUND (-), +12V TO IGNITION, and +12V TO
BATTERY wires first then make all other connections as described
in the following sections before you plug the wire harness with

the 14-pin connector into the stereo. If any wire connections
are made incorrectly or out of order, damage to the stereo is
possible.

Note: The wires in the wire harness have these colors and labels.

FRONT LEFT FRONT RIGHT
(White) + (Gray) +
(White/Black) - (Gray/Black) -

REAR LEFT REAR RIGHT
(Green) + (Violet) +
(Green/Black) - (Violet/Black) -

Wire
Harness

Black GROUND (-)

Red +12V to IGNITION

Blue/White AMP REMOTE

Yellow +12V to BATTERY

You must connect a separate wire to each speaker terminal as
described in the following procedure. Do not use a common wire or
chassis ground for any speaker connection.

Using an Adapter Harness

If you are replacing an existing stereo, or if your vehicle has been
factory-wired for autosound components, you might be able to use an
adapter harness to connect the power and speakers. RadioShack stores
sell adapter harnesses for most vehicles.

Follow the directions that come with the adapter harness to temporarily
connect the power and speakers.

Connecting Ground, Power, and Optional Components

Follow these steps to connect the wire harness to ground, primary and
memory backup power, and optional components.

Note: The (Red +12V to Ignition) and (Yellow +12V to Battery) wires each
have an In-Line fuse Holder.

1. Connect the black GROUND (-) wire to a chassis ground, such as a metal
screw attached to a metal part of the vehicle's frame. Be sure that
the screw is not insulated from the frame by a plastic part.

2. Connect the red +12V to IGNITION wire (with in-line fuse holder) to a
point in your vehicle's fuse block that has power only when you turn
the vehicle's key to either the accessory (ACC) or START position.

This connection turns on the stereo when you turn on the ignition or
turn the key to ACC, and turns off the stereo when you turn off the
ignition. This prevents your vehicle's battery from being drained if
you leave the stereo on when you turn off the ignition.

3. Connect the yellow +12V to BATTERY wire (with in-line fuse holder) to
your vehicle battery's positive (+) terminal or to a fuse that
provides a continuous source of 12 volts.

This connection provides power for the stereo's components (such as
the clock), and continuous power for the stereo's memory when the
ignition is turned off.

4. Connect the blue/white AMP REMOTE TURN ON 500MA MAX wire to any
optional equipment designed to run from a switched source that you
want the stereo to turn on and off (such as a booster or a power
antenna).

This wire does not provide power to the components. It simply turns
them on or off. If you do not use this wire, secure it with a wire tie
and do not let it touch metal.

Note: The optional equipment must be designed for use with a switched
power lead.

Connecting Two Pairs of Speakers

If you are using both front and rear speakers, follow these steps to
connect the harness to the speakers.

Speaker Wires:

FRONT LEFT FRONT RIGHT
(White) + (Gray) +
(White/Black) - (Gray/Black) -

REAR LEFT REAR RIGHT

(Green) + (Violet) +
(Green/Black) - (Violet/Black) -

1. Use a small screwdriver to move (2 ch) (4 ch) on the bottom of the
stereo to (4 ch) (four channels).

2. Connect the gray FRONT RIGHT (+) wire to the front right speaker's
positive terminal. The terminal is usually marked with a plus (+)
sign or red mark.

3. Connect the gray/black FRONT RIGHT (-) wire to the front right
speaker's negative terminal. This terminal might be marked with a
minus (-) sign or unmarked.

4. Connect the white FRONT LEFT (+) wire to the front left speaker's
positive terminal.

5. Connect the white/black FRONT LEFT (-) wire to the front left
speaker's negative terminal.

6. Connect the violet REAR RIGHT (+) wire to the right rear speaker's
positive terminal.

7. Connect the violet/black REAR RIGHT (-) wire to the rear right rear
speaker's negative terminal.

8. Connect the green REAR LEFT (+) wire to the rear left speaker's
positive terminal.

9. Connect the green/black REAR LEFT (-) wire to the rear left speaker's
negative terminal.

Connecting One Pair of Speakers

If you are using only one pair of speakers, follow these steps to connect
the harness to the speakers.

1. Use a small screwdriver to move (2 ch) (4 ch) on the bottom of the
stereo to (2 ch) (two channels).

2. Connect the gray FRONT RIGHT (+) wire to the right speaker's positive
terminal. This terminal is usually marked with a plus (+) sign or red
mark.

3. Connect the violet/black REAR RIGHT (-) wire to the right speaker's
negative terminal. This terminal might be marked with a minus (-) sign