Panasonic CQ-R221U manual Required Tools, Dashboard Specifications, Identify All Leads

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Installation Guide continued

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❏Required Tools

You'll need a screwdriver, a 1.5 volt AA battery, and the following:

12 V DC	ELECTRICAL	SIDE-CUT
TEST BULB	TAPE	PLIERS

plug (leaving the leads as long as possible) so that you can work with individual leads.

Turn the ignition on to the accessory position, and ground one lead of the test bulb to the chassis.

❏Dashboard Specifications

THICKNESS

MIN. 3/16" (4.75 mm)

MAX. 7/32" (5.56 mm)

2-3/32" (53 mm)

7-5/32" (182mm)

❏Identify All Leads

The first step in installation is to identify all the car wires you’ll use when hooking up your sound system.

As you identify each wire, we suggest that you label it using masking tape and a permanent marker. This will help avoid confusion when making connections later.

Note: Do not connect the power connector to the stereo unit until you have made all connections. If there are no plastic caps on the stereo hooking wires, insulate all exposed leads with electrical tape until you are ready to use them. Identify the leads as follows.

Power Lead

If your car has a radio or is pre-wired for one: Cut the connector wires one at a time from the

Touch the other lead of the test bulb to each of the exposed wires from the cut radio connector plug. Touch one wire at a time until you find the outlet that causes the test bulb to light.

Now turn the ignition off and then on. If the bulb also turns off and on, that outlet is the car power lead.

If your car is not wired for an audio unit :

Go to the fuse block and find the fuse port for radio (RADIO), accessory (ACC), or ignition (IGN).

Battery Lead

If your stereo unit has a yellow lead, you will need to locate the car’s battery lead. Otherwise you may ignore this procedure. (The yellow battery lead provides continuous power to maintain a clock, memory storage, or other function.)

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

Identilfy the car speaker leads. There will be two leads for each speaker, usually color coded.

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CQ-R221U