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7

• The stereo’s buzzer alarm sounds if

you make an incorrect connection.
For example, speaker wires make
contact to ground and the battery’s
positive (+) terminal for around 5
seconds with the power leads con-
nected to the battery’s positive ter-
minal and the ground wire
connected to the battery’s negative
terminal.

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. Ra-
dioShack stores sell adapter harnesses
for most vehicles.

Follow the directions that come with the
adapter harness to temporarily connect
the ground, power optional components,
and speakers. Then go to “Completing
the Connections” on Page 9.

Connecting Ground, Power, 
and Optional Components 

Follow these steps to connect the har-
ness with the 14-pin connector to
ground, primary and memory backup
power, and optional components.

1. Disconnect the cable from your

vehicle's negative (–) battery termi-
nal.

2. 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
chassis by a plastic part.

3. Connect the red power wire (with fil-

ter and fuse box) 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 ON
position. This connection turns on
the stereo when you turn on the igni-
tion 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.

4. Connect the yellow power/memory

wire (with filter and fuse box) to your
vehicle battery's positive (+) termi-
nal or to a point in your vehicle's
fuse block that provides a continu-
ous source of 12 volts.

This connection provides power for
the stereo's components, and con-
tinuous power for the stereo's mem-
ory when the ignition is turned off.

Black GROUND (–)

Red +12V 

12V 

Blue/White 
AMP REMOTE 
TURN ON
500MA MAX

To BATTERY

TO IGNITION

12-2156.fm  Page 7  Wednesday, November 24, 1999  10:39 AM

Summary of Contents for 12-2156

Page 1: ...Cat No 12 2156 OWNER S MANUAL Please read before using this equipment CD Player AM FM Car Stereo 12 2156 fm Page 1 Wednesday November 24 1999 10 39 AM...

Page 2: ...ly adjust the high and low sounds and the balance between the left right and front rear speakers so you can tailor the sound to suit your preferences Loud Button lets you boost the vol ume of sounds a...

Page 3: ...stant stations Advanced FM Optimizer Circuitry automatically adjusts the tuner s stereo separation and high frequency response to give you the best possible sound re gardless of the signal level This...

Page 4: ...the Dash 11 Installing Removing the Control Panel 11 Basic Operation 12 Setting the Clock 12 Adjusting the Sound 12 Resetting the Display 13 Radio Operation 14 Playing the Radio 14 Memory Tuning 14 Ma...

Page 5: ...truc tions in this manual are arranged in this order Preparing the Mounting Area Before you mount the stereo make sure you have all the necessary materials Then confirm that the stereo fits your ve hi...

Page 6: ...em to complete the connections Your local RadioShack store carries a full line of wire and wire management accesso ries Cautions For added safety and to protect your stereo disconnect the cable from y...

Page 7: ...r vehicle s negative battery termi nal 2 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...

Page 8: ...ks properly remove the control panel and disconnect Your vehicle battery s negative cable The harness from the stereo s 14 pin wiring socket Then proceed with the installation Connecting an Equalizer...

Page 9: ...e s negative battery terminal TESTING THE CONNECTIONS Reset your stereo s display see Reset ting the Display on Page 13 then in stall your stereo s control panel see Installing Removing the Control Pa...

Page 10: ...leeve to the dash by bending out all the tabs with a screwdriver 7 Reconnect the harness to the ste reo s 14 pin wiring socket then reconnect the antenna 8 Slide the stereo into the sleeve until it lo...

Page 11: ...rom the slot 7 Disconnect the 14 wire harness and the antenna 8 If you are mailing or shipping the stereo use a Phillips screwdriver to reinstall the shipping screws in the top of the stereo 9 Reconne...

Page 12: ...ck ADJUSTING THE SOUND As you listen to your radio or a CD use these controls to adjust the sound to suit your listening preferences Repeatedly press SEL until VOL and a number appear Then adjust the...

Page 13: ...ss output to normal press LOUD again LOU disap pears To temporarily silence the stereo press MUTE MUTE appears To resume listen ing press MUTE again MUTE disap pears RESETTING THE DISPLAY Use a ballpo...

Page 14: ...y strong stations press LOC until LOC appears To improve reception of weak FM stations press STEREO until MON appears The sound is no longer in stereo but the reception should improve To return to ste...

Page 15: ...ning and tunes to the first stored station Selecting a Stored Station To select a station stored in FMI FMII FMIII AMI or AMII repeatedly press BND to select the desired memory group then press the de...

Page 16: ...from Track 1 If a CD is already in the CD player simply press CD to play the CD The stereo displays the track num ber of the track you last played and the CD starts to play from that track After the...

Page 17: ...player rapidly plays the CD either for ward or backward and the sound low ers When you hear the section you want release SKIP SEEK or SKIP SEEK to resume normal play SCANNING THE TRACKS You can set th...

Page 18: ...5PGM to play the CD tracks in the order you programmed Cautions Driving on bumpy roads might cause the CD player to skip Perfor mance will improve after a short break in period Skipping does not damag...

Page 19: ...ure wear of parts Handle the stereo gently and carefully Dropping it can damage circuit boards and cases and can cause the stereo to work improperly Wipe the stereo with a damp cloth occasionally to k...

Page 20: ...from the non label side Keep the CD dry A water drop can act as a lens and affect the laser beam s focus If you park your vehicle in the sun temperatures inside the vehicle can easily reach levels th...

Page 21: ...e yellow continuous power wire s fuse must be 15 amps Caution Make sure you replace a fuse only with another fuse of the same rating 4 Re assemble the filter and fuse box by closing it then pushing th...

Page 22: ...wer Source 12V DC Negative Ground Speaker Output Impedance 4 or 8 Ohms Maximum Power 30 Watts 4 CH Music Power Power Output 10 THD 1kHz 22 Watts 4 CH Music Power RADIO FM Nominal AM Nominal Frequency...

Page 23: ...1 8 7 Inches 59 181 178 mm Weight 3 9 lb 1 76 kg Specifications are typical individual units might vary Specifications are subject to change and improvement without notice 12 2156 fm Page 23 Wednesday...

Page 24: ...warranty period take the product and the RadioShack sales receipt as proof of purchase date to any RadioShack store RadioShack will at its option un less otherwise provided by law a correct the defec...

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