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20
Installation Guide continued
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.
If not, keep testing different lead combinations
until you have located all the speaker leads.
When you label them, include the speaker loca-
tion for each.
Antenna Motor
If your vehicle is equipped with an automatic
power antenna, identify the vehicle motor anten-
na 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 (only for CQ-DP738EU)
If 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
Page 27 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 tem-
porary 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 vehicle chassis.
CQ-DP738/728EU
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 more
than 35 watts (for CQ-DP728EU;
25watts)
of
audio power. If using an optional audio amplifier,
the speakers should be able to handle the maxi-
mum 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
speaker must be connected separately using par-
allel insulated wires. If in doubt about how your
car's speakers are wired, please consult with your
nearest professional instalter.
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