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❏ Identify All Leads
A handy way to identify the speaker leads and the speaker
S
they are connected with is to test the leads using a 1.5 V
H
The first step in installation is to identify all the car wires
AA battery as follows:
you’ll use when hooking up your sound system.
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As you identify each wire, we suggest that you label it
Hold one lead against one pole of the battery and stroke
using masking tape and a permanent marker. This will
the other lead across the other pole. You will hear a
help avoid confusion when making connections later.
scraping sound in one of the speakers if you are holding a
Note: Do not connect the power connector to the stereo
speaker lead.
unit until you have made all connections. If there are no
If not, keep testing different lead combinations until you
plastic caps on the stereo hooking wires, insulate all
have located all the speaker leads. When you label them,
exposed leads with electrical tape until you are ready to
include the speaker location for each.
use them. Identify the leads in the following order.
Antenna Motor
Power Lead
If your car is equipped with an automatic power antenna,
If your car has a radio or is pre-wired for one :
identify the car motor antenna lead by connecting one
Cut the connector wires one at a time from the plug
bulb tester lead to the car battery lead and touching the
(leaving the leads as long as possible) so that you can
remaining exposed wires from the cut radio connector
work with individual leads.
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.
Turn the ignition on to the accessory position, and ground
❏ Connect All Leads
one lead of the test bulb to the chassis.
Now that you have identified all the wires in the car, you
are ready to begin connecting them to the stereo unit
Touch the other lead of the test bulb to each of the
wires. The wiring diagram (a page 30) shows the proper
exposed wires from the cut radio connector plug. Touch
connections and color coding of the leads.
one wire at a time until you find the outlet that causes the
We strongly recommend that you test the unit before
test bulb to light.
making a final installation.
Now turn the ignition off and then on. If the bulb also
You can set the unit on the floor and make temporary
turns off and on, that outlet is the car power lead.
connections to test the unit. Use electrical tape to cover all
exposed wires.
If your car is not wired for an audio unit :
Go to the fuse block and find the fuse port for radio
Important: Connect the red power lead last, after you
(RADIO), accessory (ACC), or ignition (IGN).
have made and insulated all other connections.
Battery Lead
If your stereo unit has a yellow lead, you will need to
Ground
locate the car's battery lead. Otherwise you may ignore
Connect the black ground lead of the power connector to
this procedure. (The yellow battery lead provides
the metal car chassis.
continuous power to maintain a clock, memory storage, or
other function.)
Speakers
Connect the speaker wires. See the wiring diagram
If your car has a radio or is pre-wired for one:
(a page 30) for the proper hookups. Follow the diagram
With the ignition and headlights off, identify the car
carefully to avoid damaging the speakers and the stereo
battery lead by grounding one lead of the test bulb to the
unit.
chassis and checking the remaining exposed wires from
The speaker used must be able to handle more than 45 W
the cut radio connector plug.
of audio power. If using an optional audio amplifier, the
If your car is not wired for an audio unit :
speakers should be able to handle the maximum amplifier
Go to the fuse block and find the fuse port for the battery,
output power. Speakers with low input ratings can be
usually marked BAT.
damaged.
Speaker impedance should measure 4 - 8 Ω, which is
Speakers
typically marked on most speakers. Lower or higher
Identify the car speaker leads. There are two leads for
impedance speakers will affect output and can cause both
each speaker which are usually color coded.
speaker and stereo unit damage.
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CQ-DPX172U
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