Metra Electronics 99-3308G User manual

INSTALLATION INSTRUCTIONS FOR PART 99-3308G
METRA. The World’s best kits.®
CAUTION! All accessories, switches, climate controls panels,
and especially air bag indicator lights must be connected before
cycling the ignition. Also, do not remove the factory radio with
the key in the on position, or while the vehicle is running.
•ISO DIN radio provision with pocket
• ISO DDIN radio provision
•Painted gray to match factory finish
• A) Radio trim panel • B) Radio brackets • C) Pocket • D) (6) #8 x 3/8” Phillips screws
• E) (2) #10 x ¾” Phillips screws • F) (2) #10 panel clips • G) Axxess interface and wiring harness (not shown)
KIT FEATURES
KIT COMPONENTS
WIRING & ANTENNA CONNECTIONS (sold separately)
Wiring Harness: • Axxess interface and harness included
Antenna Adapter: • 40-EU55
• Panel removal tool • Phillips screwdriver
• 9/32” socket wrench
TOOLS REQUIRED
Chevy Equinox / GMC Terrain 2013-up
(with color display)
99-3308G
A
Table of Contents
BCE FD
Dash Disassembly ................................................. 2
Kit Preparation....................................................... 3
Kit Assembly
–ISO DIN radio provision with pocket...................... 4
–ISO DDIN radio provision ...................................... 4
Axxess Interface Installation ............................. 5-7

99-3308G
2
Dash Disassembly
1. With pocket above factory radio
controls - Remove (2) 9/32”
screws from inside the pocket,
then unclip and remove the pocket.
2. Without pocket, just unsnap and
remove the panel. (Figure A)
3. Unsnap, unplug, and remove
the radio/ climate control panel.
(Figure B)
4. Unclip and remove the (2) side
panels from the left and right
side of the pocket/CD slot panel.
(Figure C)
5. Remove (4) 9/32” screws to remove
the pocket/CD slot panel. Remove
the power outlet and attach it to the
included pocket if installing single
DIN. If you are mounting a DDIN the
power outlet will not be retained with
this kit. Remove the rubber bottom
from the factory pocket and save it
for final assembly. (Figure D)
6. Remove (2) 9/32” screws from
each a/c vent then unclip and
remove the vents. Remove the
screws inside and under the vent
cavities and two from below the
vent locations. (this will allow flex
in the dash to fit the aftermarket in
later). (Figure E)
7. Remove (4) 9/32” screws securing
the radio chassis and remove.
(Figure F)
Continue to Kit Preparation
(Figure A) (Figure D)
(Figure C) (Figure F)
(Figure B) (Figure E)

99-3308G
(Figure A) (Figure B)
3
Kit Preparation
1. A small section of the sub-dash
must be cut with a cutting tool to
allow the radio to fit:
a. Remove the lip from the
section of dash just above
the original CD slot location
by cutting along the dotted line.
(Upper shading in figure A)
b. It is also recommended that
a portion of the sub dash
in front side of the console be
removed. (Lower shading in
figure A)
2. Attach the (2) #10 panel clips
included with the kit onto the front
legs of the radio brackets.
(Figure B)
Continue to Kit Assembly

99-3308G
4
Kit Assembly
ISO DDIN radio provision
1. Attach the radio brackets to the
radio using the screws supplied
with the radio. (Figure A)
Continue to Axxess
Interface Installation
(Figure B)
(Figure A)
ISO DIN radio provision with pocket
1. Attach the pocket to the radio
brackets using the (4) #8 x 3/8”
Phillips screws provided.
(Figure A)
2. Remove the metal DIN sleeve
and trim ring from the
aftermarket radio.
3. Slide the radio into the bracket/
pocket assembly and then secure
it using the screws supplied with
the radio. (Figure B)
Continue to Axxess
Interface Installation
(Figure A)

99-3308G
5
Axxess Interface Installation
• Provides accessory power (12-volt 10-amp)
• Retains R.A.P. (retained accessory power)
• Retains OnStar/OE Bluetooth
• Retains chimes
• Adjustable volume for chimes and OnStar
• Provides NAV outputs (mute, parking brake, reverse, and V.S.S)
• Prewired ASWC-1 harness included (ASWC-1 sold separately)
• Retains factory color screen
• Retains factory backup camera
• Can be used in amplified or non-amplified models
• Retains balance and fade
• Micro “B” USB updatable
INTERFACE FEATURES
• Wire cutter • Crimp tool • Solder gun • Tape • Small flat-blade screwdriver
• Connectors (example: butt-connectors, bell caps, etc.)
TOOLS REQUIRED
• Axxess Interface
• 3308 harness
• 16-pin harness with stripped leads
INTERFACE COMPONENTS
From the 16-pin harness with stripped leads to the aftermarket radio:
• Connect the (2) Red wires to the accessory wire.
Note: If installing an ASWC-1 (sold separately), there will be an accessory wire
there to connect as well.
• If the vehicle is factory amplified, connect the Blue/White wire to the amp turn
on wire. This wire must be connected to hear sound from the factory amplifier.
• If the aftermarket radio has an illumination wire, connect the Orange wire to it.
• If the aftermarket radio has a mute wire, connect the Brown wire to it. If the
mute wire is not connected, the radio will turn off when OnStar is activated.
• Connect the Gray wire to the right front positive speaker output.
• Connect the Gray/Black wire to the right front negative speaker output.
• Connect the White wire to the left front positive speaker output.
• Connect the White/Black wire to the left front negative speaker output.
The following (3) wires are only for multimedia/navigation radios that require these wires.
• Connect the Blue/Pink wire to the VSS/speed sense wire.
• Connect the Green/Purple wire to the reverse wire.
• Connect the Light Green wire to the parking brake wire.
• If adding an aftermarket backup camera, connect the Yellow RCA jack to it.
Continued on the next page
Connections to be made

99-3308G
6
From the 3308 harness to the aftermarket radio:
• Connect the Black wire to the ground wire.
• Connect the Yellow wire to the battery wire.
• Connect the Green wire to the left rear positive speaker output.
• Connect the Green/Black wire to the left rear negative speaker output.
• Connect the Purple wire to the right rear positive speaker output.
• Connect the Purple/Black wire to the right rear negative speaker output.
• If retaining the factory AUX-IN jack, connect the Red & White RCA jacks
to the AUX input.
Note:
a. The AUX-IN jack can only be used if it is a single AUX-IN jack.
b. If the AUX-IN jack has a USB port, neither can be used.
12-pin pre-wired ASWC-1 harness:
• This harness is to be used along with the optional ASWC-1 (not included) to
retain steering wheel audio controls. If the ASWC-1 is not being used, disregard
this harness. If it will be used, please refer to the ASWC-1 instructions for radio
connections and programming.
Note: Disregard the harness that comes with the ASWC-1.
• Connect the Red wire to the accessory wire.
Note: The relay attached to the 3308 harness is only for audible turn signal
clicks. No extra steps are required to retain this, so leave it as-is.
Continue to Final Assembly
With the key in the off position:
1. Connect the 16-pin harness with stripped leads, and the 3308 harness,
into the interface.
2. Connect the 3308 harness to the vehicle.
Note: Make sure to connect the factory LDVS harness (blue connector)
that was disconnected from factory radio, into the interface.
3. Locate the factory antenna connector in the dash and complete all necessary
connections to the radio. Metra recommends using the proper mating adapter
from Metra.
4. Before using the kit it must be initialized.
Attention! If the interface loses power for any reason, the following steps will
need to be performed again. Also, if installing an ASWC-1 connect it after you
initialize and test the interface/radio, with the key in the off position.
a. Turn the key (or push-to-start button) to the ignition position and wait until
the radio comes on.
Note: If the radio does not come on within 60 seconds, turn the key to the
off position, disconnect the interface, check all connections, reconnect the
interface, and then try again.
b. Turn the key to the off position, and then to the accessory position. Test all
functions of the installation for proper operation, before reassembling the dash
5. Test the radio and climate controls for proper operation.
Continued on the next page
Connections to be made (cont.) Final Assembly

99-3308G
7
Final Assembly (cont.) Backup Camera Settings
6. Chime level adjustment:
a. With the vehicle on, turn it
off and leave the keys in the
ignition. Open the driver’s door;
chimes will be heard.
b. Wait 10 seconds, and then with
a small flat-blade screwdriver,
turn the potentiometer
clockwise to raise the chime
level; counterclockwise to lower
the chime level.
c. When the chime is at a desired
level, remove the keys from the
ignition. This will lock the chime
volume at its current level.
7. Secure the completed assembly
into the dash using the
factory screws.
8. Attach the radio trim panel over
the completed assembly, and then
reassemble the dash in reverse
order of disassembly.
From the main OEM screen:
1. Press the gear icon located in the
bottom right corner to enter the
settings menu.
3. Press the “Backup Camera
Settings” button to enter the
backup camera settings menu.
4. If you are using the factory
equipped backup camera, select
“OEM Backup Camera”.
• If you are using an aftermarket
backup camera, select
“Aftermarket Backup Camera”
• If there is no backup camera
present, keep selected
“No Backup Camera”
Note: If there is no backup camera
present and this setting is not
changed, the OEM screen will
switch to a black screen while
the vehicle is in reverse.
2. Press the “Customize” button to
enter the customize menu.