Panasonic CQ-DC1 EUC Operating Instructions Manual page 34

lnstallation
Guide
A
handy
way to
identify the speaker leads and the
speaker they connect with is to test the
leads
using a 1.5 volt AA 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
holding a speaker lead.
lf
not, keep testing different lead
combinations
until
you
have located
allthe speaker
leads. When
you label them, include the speaker location for
each.
Antenna Motor
lf
your vehicle is equipped with an automatic
power
antenna,
identify the vehicle
motor antenna
lead by connecting one bulb tester lead
to
the
vehicle battery lead and touching the remaining
exposed wires from the cut radio connector
plug
one at a time. You will hear the antenna motor
activate when you touch the correct wire.
Antenna
The antenna lead is a thick, black wire with
a
metal plug at the end.
Telephone Mute
lf you have a cellular phone, refer to its
operator
manual
to
identify the telephone mute lead
con-
nection.
o Connect
All
Leads
Now
that you have identified all the wires in
the
vehicle, you're ready
to begin connecting them
to
the stereo unit wires. The connection diagram
on
Pages 41 and 42 show 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
con-
nections.
Ground
Connect the black ground lead of the power
con-
nector to the
metal vehicle chassis.
continued
Speakers
Connect the speaker wires. See the wiring dia-
gram below for the proper hookups. Follow the
diagram carefully to avoid
damaging
the
speakers
and the stereo unit.
The speakers used must be able to
handle the
maximum amplifier
output power. Speakers
with
low input ratings can
be damaged.
Speaker impedance should measure
4 - 8
ohms,
which is typically marked on most
speakers.
Lower
or higher
impedance
speakers will affect
output and can cause both speaker and stereo
unit damage.
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. lf in doubt about how your
car's
speakers are
wired, please consult with your
near-
est professional installer.
CORRECT
No Common Ground
INCORRECT
Common Chassis Ground
INCORRECT
Speaker Common
(common earth lead)
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