Help – Audiovox 128-4874A User Manual

Page 3

PERFORATED STRAP

SCREW STUD

NOSE PIECE COLLAR
(INCLUDED WITH RADIO)

METAL PART OF
DASH BOARD

RADIO

DRILL HOLE IF NECESSARY

HEX

HEX NUT

SHAFT NUT

SCREW

TRIM FOR "GM"

DASHBOARD

SHAFT NUTS

CHE

CHEVR

VROLET-OLDSMOBILE-BUICK-PONT

OLET-OLDSMOBILE-BUICK-PONT

OLET-OLDSMOBILE-BUICK-PONTIIIII AC-GMC-CA

AC-GMC-CA

AC-GMC-CADILL

DILL

DILLAC INST

AC INST

AC INSTALL

ALL

ALLA

TT ION

ION

1981 A

1981 AND OLDER

ND OLDER

Important-This installation is designed for 1981 and older U.S. made GM cars, trucks, and vans. For 1981 and
newer vehicles, an installation kit may be required. See Kit Listing on Page 1 of this manual or refer to the in-store
application chart. If a kit is not required, use the following instructions.

1. Remove the Existing Radio:

A. Remove radio knobs and shaft nuts behind the knobs.
B. Locate and remove support brace at back of radio.
C. Push radio back into dashboard to access the wiring and antenna cables plugged into the rear of the

chassis.

D. Un-plug the wiring harness(es) and antenna cable and remove the radio.

2. Wire the New Radio:

A. In most cases it is easier to wire the radio before mounting it. Place the radio near the dashboard so the

wires can be led through the opening.

B. Carefully follow the diagram on page 8 to wire the radio, making certain all connections are secure and

insulated with wire nuts or electrical tape to insure proper operation of the unit.

C. After completing the wiring, turn the unit on to confirm operation (ignition switch must be "on"). If unit does

not operate, re-check all wiring until problem is corrected. Once proper operation is achieved, turn off unit
and ignition switch, and proceed with final mounting of the radio.

3. Install the New Radio:

A. Thread a shaft nut half-way down each radio shaft.
B. Trim the top edge off of the nosepiece collar at the "CUT OFF FOR GM" mark and place the collar on radio

nosepiece.

C. Place the radio behind dashboard and through the radio opening. Adjust the position of the shaft nuts so

that the radio nosepiece and collar are flush against the back of the dashboard.

D. Secure the radio with a shaft nut on each radio shaft.
E. Attach one end of the perforated support strap (supplied) to the screw stud on the radio using the hex nut

provided. Fasten the other end of the perforated strap to a secure part of the dashboard either above or
below the radio using the screw and nut provided. Bend the strap to position it as necessary.

CAUTION: The rear of the radio must be supported with the strap to prevent damage to the dashboard from

the weight of the radio or improper operation of the radio due to vibration.

F. Install knobs on radio shafts.

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