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Installation Guide continues)
locate the car's battery lead. Otherwise you may
ignore this procedure. (The yellow battery lead pro-
vides continuous power to maintain a clock, memory
storage, or other functions.)
if your car has a radio or is pre-wired for one:
With the ignition and headlights off, identify the car
battery lead by grounding one lead of the test bulb
to the chassis and checking the remaining exposed
wires from the cut radio connector plug.
If your car is not wired for an audio unit :
Go to the fuse block and find the fuse port for the
battery, usually marked BAT,
Speakers
Identify the car speaker leads. There will be two
leads for each speaker, usually color coded.
A handy way to identify the speaker leads and the
speaker they connect with is to test the leads using
a 1.5 VAA battery as follows.
Hold one lead against one pole of the battery and
stroke the other lead across the other pole. You will
hear a scraping sound in a speaker if you are hold-
ing a speaker lead.
If not, keep testing different lead combinations until
you have located all the speaker leads. When you
label them, include the speaker location for each.
€ Connect All Leads
Now that you have identified all the wires in the
car, you're ready to begin connecting them to the
stereo unit wires. The connection diagram (=>
Page 48) shows the proper connections and color
coding of the leads.
We strongly recommend
that you test the unit
before making a final installation.
You can set the unit on the floor and make tempo-
rary connections to test the unit. Use electrical
tape to cover all exposed wires.
Important: Connect the red power lead last, after
you have made and insulated all other connec-
tions.
Ground
Connect the black ground lead of the power con-
nector to the metal car chassis.
Speakers
Connect the speaker wires. See the wiring dia-
gram for the proper hookups. Follow the diagram
CA-TU7000U
carefully to avoid damaging the speakers and the
stereo unit.
The speakers used must be able to handle more
than 45 W of audio power. If using an optional
audio power, the speakers should be able to han-
dle the maximum amplifier output power. Speakers
with low input ratings can be damaged.
Speaker
impedance
should
measure
4 - 8 Q,
which is typically marked on most speakers. Lower
or higher impedance speakers will affect output
and can cause both speaker and stereo unit dam-
age.
Caution:
Never ground the speaker cords. For
example, do not use a chassis ground system or a
three-wire speaker common system. Each speak-
er must be connected
separately using parallel
insulated wires. If in doubt about how your car's
speakers are wired, please consult with your near-
est professional! installer.
Motor Antenna
Connect
the vehicle
motor
antenna
lead to the
blue motor antenna relay contro! lead.
Battery
Connect the yellow battery lead to the correct
radio wire or to the battery fuse port on the fuse
block.
Antenna
Connect the antenna by plugging the antenna lead
into the antenna receptacle.
Equipment
Connect any optional equipment such as an DVD
video player according to the instructions fur-
nished with the equipment. Read the operating
and installation instructions of any equipment you
will connect to this unit.
Power
Connect the red power lead to the correct car
radio wire or to the appropriate fuse port on the
fuse block.
if the stereo unit functions properly with all these
connections made, disconnect the wires and pro-
ceed to the final installation.
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