Trunk Mount Amplifier
(120-1971B)                Preparation                Faxback Doc. # 18181

Before you install the amplifier, carefully read all instructions.

Please note the following before you begin installing the amplifier:

    For added safety and to protect your autosound system and amplifier,
    disconnect your vehicle battery's negative (-) cable before you begin
    making the connections.

    Do not mount the amplifier until you are sure the connections are
    correct.  To help you determine this, temporarily connect the amplifier
    and test it to be sure it works before you permanently mount the
    amplifier.

CHOOSING A MOUNTING LOCATION

Choose a mounting location that meets the following requirements:

    Does not interfere with the vehicle's operation.

    Lets you drill mounting holes without damaging other vehicle
    components.

    Allows enough space around the cooling fins to permit reasonable
    airflow and cooling.

WARNING:  Do not touch the amplifier when it is on.  The amplifier gets
          very hot while in use.

INCLUDED WITH THE AMPLIFIER

Your amplifier comes with the following items that are necessary for 
mounting.  (See "Mounting the Amplifier," Faxback Doc. #     ).  Be sure
to unpack these items before you dispose of the packing materials.

    4 Sheet-Metal Screws

    4 Spring Washers

    4 Flat Washers

CONNECTING POWER

Place the amplifier on the desired mounting location, then follow these
steps to connect power to the amplifier, see illustration in Faxback Doc
#18004.

1.  Connect one end of the supplied black (ground) wire to a nearby part 
    of the vehicle's metal frame (chassis ground).

    NOTE:  Many modern vehicle parts are made of plastic or other materials
           that do not conduct electricity.  You must connect the black
           (ground) wire to a metal part that is not insulated from the
           vehicle's frame by one of these non-conducting parts.

2.  Connect the other end of the wire to the amplifier's GND terminal.

3.  Connect one end of the supplied red (power) wire directly to your
    vehicle's +12 volt battery power source.

4.  Connect the other end of the wire to the amplifier's +12V terminal.

5.  Connect one end of the supplied blue with white stripe (remote) wire's
    male quick disconnect plug to your autosound system's switched power
    output lead.

6.  Connect the other end of the wire to the amplifier's REM terminal.  
    This connection turns the amplifier on/off when you turn your 
    autosound system on/off.

CONNECTING THE AMPLIFIER

You can connect your autosound system to the amplifier's low- or high-level
input terminals.

If your autosound system has phono-type outputs, connect them to the 
amplifier's low level input terminals for a cleaner, less noisy signal.  If
your autosound system has only speaker outputs, connect them to the
amplifier's high-level input terminals.

Low-Level Inputs

Your amplifier has gold-plated low-level input terminals to match radios
and equalizers with phono-type line-level outputs.

Using plug-to-plug phono cables (such as Radio Shack cat. No. 
42-2356, not supplied), connect the autosound system's left and right, 
low-level output phono jacks to the amplifier's corresponding left and
right LOW INPUT phono terminals, see illustration in Faxback Doc. #18004.

High-Level Inputs

If your vehicle's autosound system does not have phono-type output jacks, 
connect its left and right speaker output wires to the amplifier's HIGH
INPUT corresponding L and R terminals, see illustration in Faxback Doc.
#18004.

NOTES:  Be sure to connect the terminals +to+ and -to-.

        If the autosound system has only three wires, connect the common 
        speaker wire to both of the amplifier's L and R negative (-)
        terminals, see illustration in Faxback Doc #18004.

CONNECTING THE OUTPUTS

Using 18-gauge stranded speaker wire (such as Radio Shack Cat. No. 278-
1217, not supplied), connect the autosound system's left and right speakers
to the amplifier's corresponding left and right SPEAKER terminals, see
illustration in Faxback Doc. #18004.

1.  Disconnect the left speaker's positive (+) wire from your autosound
    system and reconnect it to the amplifier's left positive (+) SPEAKER
    terminal.

    Note:  The positive wire's insulator might be marked with a positive 
    (+) symbol, a ridge, or a white stripe, or the conductor wire strands
    might be gold colored.

2.  Disconnect the left speaker's negative (-) wire from your autosound
    system and reconnect it to the amplifier's left negative (-) SPEAKER
    terminal.

    Note:  The negative wire's insulator might be marked with a negative
    symbol (-) or the conductor wire strands might be silver colored.

3.  Repeat Steps 1 and 2 to connect the right speaker to the amplifier's
    right SPEAKER terminals.

TESTING THE AMPLIFIER

1.  Temporarily reconnect your vehicle battery's negative (-) cable.

2.  Turn on your vehicle's ignition and verify that both the amplifier and
    your autosound system work properly.

3.  If both the amplifier and your autosound system work properly, proceed
    to "Mounting the Amplifier," Faxback Doc. #     .

    If either the amplifier or your autosound system does not work 
    properly, immediately disconnect your vehicle battery's negative (-)
    cable and carefully recheck your connections.


(CS 10/10/95)