Page 1
Jeep Wrangler
PSS-20WRA Sound System
Installation Manual
Model: Wrangler Unlimited
Model Year: 2007 – 2014
*Not compatible with factory amplied systems
Jeep Wrangler
UNLIMITED 1/20
Jeep
* The specified vehicles have been tested and have met compatibility specs at the time of testing. Compatibility is
not guaranteed if the manufacturer has made production changes to the listed vehicles above.
Warning: Before you begin wiring, remove the ground wire from the NEGATIVE (-)
Model Year
Wrangler Unlimited 2007 - 2014
terminal of the battery. Failing to do so can lead to electric shock, injury or damage
to equipment.
Introduction
Congratulations on purchasing the PSS-20WRA. This installation manual is designed to take you through the
step-by-step installation of the PSS-20WRA into a 2007 - 2014 Jeep Wrangler Unlimited. Please familiarize
yourself with the owners manual and if you still have additional questions please call 1-800-TECH-101.
Note
Design and specifications are subject to change without notice for improvement.
To Ensure Safe Use, Always Follow These Precautions
The installation of this product requires specialized skills and experience. We recommend that you have the
product installed by an Alpine authorized dealer.
Before you use this product, be sure to carefully read this installation manual and the separate user's manual
so that you can use the product correctly. Alpine Electronics bears no responsibility for problems that arise as
a result of failure to follow the instructions in the manuals.
This manual includes a number of symbols that are intended to help you use the product safely, to prevent
harm to you and others, and to protect against damage to property. These symbols and their meanings are
listed below. Make sure you fully understand these symbols before you begin reading the main text.
Explanations of Injury and Damage That May Result from Incorrect Use
Warning
Caution
Ignoring the content marked by this indication and using the product incorrectly may
lead to death or serious injury.
Ignoring the content marked by this indication and using the product incorrectly may
lead to injury or property damage.
Page 2
Types of Precautions
Forbidden
Mandatory
Forbidden
Forbidden
Forbidden
Mandatory
Mandatory
Forbidden
Forbidden
Jeep Wrangler
UNLIMITED 2/20
Indicates actions that are forbidden
(must not be performed)
Indicates that disassembly is
forbidden.
Indicates actions that are
mandatory (must be performed)
Marks content that should receive
your full attention.
Warning
Do not disassemble or modify the product. Doing so could lead to an accident, fire,
or electric shock.
Store screws and other small objects where small children cannot reach them. If one of these
small objects is swallowed, consult with a doctor immediately.
When replacing fuses, be sure to use fuses with the specified current rating. Failing to do so could
lead to an accident or fire.
Only connect the product to a 12 VDC negative ground car. Failing to do so could lead to
an accident or fire.
Before you begin wiring, remove the ground wire from the negative terminal of the battery.
Failing to do so could lead to electric shock or injury.
Do not cut the insulation on a cord and take power from another device. Doing so could
lead to fire or electric shock.
Do not install the product in a location where it will obstruct the driver’s forward view;
interfere with the operation of the steering wheel, gearshift, or the like; or pose a
threat to passengers. Doing so could lead to an accident or injury.
When making a hole in the vehicle body, be careful to avoid damaging pipes, the fuel tank,
electrical wiring, and the like. This kind of damage could lead to an accident or fire.
Page 3
Jeep Wrangler
Forbidden
Forbidden
Forbidden
Forbidden
Forbidden
UNLIMITED 3/20
When installing and grounding the product, do not use any of the bolts or nuts of the
steering wheel, brakes, fuel tank, or the like. Doing so could make the brakes stop working
or lead to fire.
Do not install the product near the passenger-side airbag. Doing so could interfere with the
operation of the airbag and lead to an accident or injury.
Bundle cords so that they don’t interfere with driving. Wrapping cords around the steering
wheel, gearshift, brake pedal, or the like, could lead to an accident or damage equipment.
Caution
Connect the product properly according to the instructions. Failing to do so could lead
to fire or an accident.
Do not sandwich cords between the seat railing or allow them to touch protrusions.
Resulting breaks or shorts could lead to electric shock or fire.
Do not block vents or heat sinks. Doing so could lead to fire or damage equipment.
Use the accessories according to the instructions, and attach them securely.
Failing to do so could lead to an accident or damage equipment.
Do not install the product where it may be exposed to water or in a place with high levels
of humidity or dust. Doing so could lead to fire or damage equipment.
The installation and wiring of this product requires specialized skills and experience.
Have the product installed by an Alpine authorized dealer.
Page 4
Tools Required
7mm 10mm 18mm
Panel Removal Tool Sockets #2 Phillips Screwdriver
9/32” Drill Bit Extension Ratchet
T15 T30 T45
Jeep Wrangler
UNLIMITED 4/20
Torx Power Drill Wire Cutters
Accessory List
Parts List
Subwoofer Amplifi er Subwoofer Level Remote
Amplifi er Mounting Bracket R/L Subwoofer Mounting
Brackets
(2) Dash Tweeter Mounting Caps (4) 6.5” Speaker Adapters (4) M6 Screws
(8) M4 Screws
Page 5
Accessory List
Parts List
(4) 8/32” Phillips Screws (4) 12” X 12” Polyfill fiber sheets Main Wiring Harness
Jeep Wrangler
UNLIMITED 5/20
SPT-70C Rear Component
Speakers
SPT-71C Front Component
Speaker
SLIDE
OPEN
||
TWEETER
SLIDE
OPEN
||
TWEETER
INPUT
INPUT
Hi/Lo RCA Adapter
OEM T-Harness Adapter Power Cable (4) RCA Adapters
(10) Cable Ties (8) 1” Truss-Head Phillips
Screws
(8) 1/2” Truss-Head Phillips
Screws
NOTE: Please align them as top left image
NOTE: Please align them as top left image
Anti-Vibration Foam Velcro (4) 6.5” Speaker Wiring Adapters
Page 6
Factory Unit Disassembly Process (2007-2010 Only)
Jeep Wrangler
UNLIMITED 6/20
1 Remove top panel by releasing (2) clips on the rear
of the top panel and then pull panel forward.
3 Release (2) clips on the top of the bottom panel.
This will expose (2) 7mm screws. Remove using a
7mm socket with ratchet & extension.
2 Remove (2) 7mm screws from the top of the radio
bezel.
4 Use panel removal tool to remove dash panel by
releasing (6) clips (3 per side).
5 Extract (4) 7mm screws and remove the factory
radio.
Page 7
Factory Radio Removal (2011 – 2014)
Jeep Wrangler
UNLIMITED 7/20
1 Remove the rubber cover from the top storage area
and extract (1) 7mm screw.
3 Remove the window switch pod using a Panel
Removal Tool and extract (1) 7mm screw.
2 Remove the knee cover panel and extract (2) 7mm
screws located to the right and left sides of the
steering wheel column.
Left side of
steering wheel
column.
Right side of
steering wheel
column.
4 Remove the dash panel.
5 Extract (4) 7mm screws and remove the factory
radio.
Page 8
Passenger Seat Removal
Jeep Wrangler
UNLIMITED 8/20
1 Using an 18mm socket, extract the (4) seat bolts
from the passenger side seat.
Front view
2 Using a T45 Torx extract (1) bolt from the seat belt
anchor.
Confirm that the Battery has been disconnected
before continuing to step 3.
Rear view
3 Unplug the two connectors and unclip them from
the base. (2011-2014 Only)
4 Remove the passenger seat from the vehicle.
Use caution when removing the seat.
Page 9
Top Dash Tweeter Removal
’07-’11 Models have (2) additional screws
Jeep Wrangler
UNLIMITED 9/20
1 Remove top dash speaker grill using a panel
removal tool.
Front Speakers Removal
1 Using a Panel Removal Tool, remove the dash side
covers by each door.
2 Gently open the (3) lock tabs to release the factory
tweeter.
2 Remove the driver side knee cover by releasing the
(2) top clips.
Passenger SideDriver Side
3 Extract (2) 10mm screws from the metal steering
wheel column cover and remove it.
10mm
Driver Side
4 Extract (2) 7mm screws from the lower dash.
’07 - ’11 Models have (4) screws.
7mm
Page 10
Front Speakers Removal
’07-’11 Models have (2) additional screws
Jeep Wrangler
UNLIMITED 10/20
5 Remove glove box by pushing both left and right
sides inwards.
7 Extract (2) 7mm screws from the side of each
respective dash enclosure.
6 Extract (2) 7mm screws from the lower dash.
’07-’11 Models have (4) screws.
8 Remove (1) 10mm screws from under the each
enclosure.
Passenger SideDriver Side
9 Disconnect the speaker enclosure (connector
located on the back).
10 Pull the dash towards the back of the vehicle and
remove the enclosure by turning towards the back.
Page 11
Jeep Wrangler
UNLIMITED 11/20
Sound Bar Speaker Removal
1 Remove (3) T15 Torx screws from the speaker grills. 2 Disconnect and remove the factory speaker.
Tweeter Assembly
1 Connect the tweeter to the X-Over network. 2 Insert the SPT-10WRA tweeter into the factory
tweeter grill. Insert the mounting cap to secure the
tweeter.
*Front SPT-71C Tweeter
and Network as shown.
Amplifier Mounting Bracket
Use the (4) 8/32” Phillips screws to attach the
amplifier to the mounting bracket. Face the RCA
connectors towards the open tab as shown.
Page 12
Tweeter Installation
Jeep Wrangler
UNLIMITED 12/20
1 Connect the dash tweeters to the factory harness
and mount X-Over network using a cable tie as
shown below.
2 Push the X-Over through the tweeter opening and
snap the tweeter into place.
Front Speaker Installation
NOTE: Polyfill installation is critical to the sound quality of the system, please do not skip this step
1 Mount the 6.5” speaker adapter using the factory
screws.
3 Connect the speaker and mount it using the
provided (8) 1” Truss-head Phillips screws.
2 Stuff the speaker enclosure with the supplied polyfill
fiber. Separate the center creating an opening and
pass the speaker cable through.
Sound Bar Speaker Installation
NOTE: Polyfill installation is critical to the sound quality of the system, please do not skip this step
1 Mount the speaker to the 6.5”
speaker adapter using the (8) ½”
Truss head screws.
2 Stuff the speaker cavity with the
supplied polyfill fiber. Separate
the center creating an opening
and pass the speaker cable
through.
3 Connect and mount the 6.5”
coaxial speakers using the
factory T15 Torx screws.
Page 13
Subwoofer Installation (passenger side seat)
Jeep Wrangler
UNLIMITED 13/20
1 Position the seat in a secure manner to gain access
to the bottom of the seat.
3 On the left seat bracket, use a 9/32” drill bit to
enlarge the two outer mounting holes of the OEM
harness mounting plate.
2 Using a T30 Torx, remove the OEM harness
mounting plate as shown below. Use a panel
removal tool to remove the two plugs from the
mounting plate.
4 Use a #2 Phillips screw driver to attach the
mounting brackets to the subwoofer with the M4
screws.
5 Secure the connector plugs using cable ties to the
left side of the seat as shown below.
6 Attach the subwoofer to the seat using the M6
screws. Do not tighten until the seat is inside the
vehicle and the amplifier mount is attached.
Page 14
Amplifier Installation
Jeep Wrangler
UNLIMITED 14/20
1 Use a 10mm socket to connect the power cable
to the POSITIVE (+) battery terminal. Note: The
NEGATIVE terminal should remain disconnected
until the installation is completed.
3 Route the power cable along the vehicle’s frame
following the OEM harness towards the back
until reaching the rubber grommet under of the
passenger side seat.
2 Route the power cable following the OEM harness
as shown below.
4 Route the cable through the rubber grommet and
seal with silicone. (silicone not supplied)
View from passenger underside of vehicle
5 Route and secure the power cable along the factory
harness using the supplied cable ties as shown
below.
View from cabin. Passenger seat area.
6 Using a 10mm socket attach the (black) NEGATIVE
(-) ground cable to the factory ground point under
the seat.
View from inside cabin. Passenger side
seat area.
Page 15
Amplifier Installation
Jeep Wrangler
UNLIMITED 15/20
7 Attach the anti-vibration foam to the amplifier,
make all the necessary connections following the
corresponding wiring diagram. See pages 16, 17 or
18.
Rear of
vehicle
Front of
vehicle
9 Route the main harness up to the headunit cavity as
shown below.
8 Route the main harness along the center console as
shown below.
Rear of
vehicle
Front of
vehicle
10 Make all the necessary connections to the
headunit following the corresponding wiring
diagram. See pages 16, 17 or 18.
Be sure to make all sound adjustments to both the subwoofer and amplifier before
proceeding to the next step. (refer to sound setting sheet or wiring diagram)
11 Return the passenger seat to into the vehicle
and attach the amplifier bracket between the
subwoofer and seat mounting brackets.
12 Connect the subwoofer and passenger seat
connector.
Page 16
Exploded View
Jeep Wrangler
UNLIMITED 16/20
Passenger door
side
Center
console side
Bass Level Control Installation
Mount the bass level control to an easily accessible location. We recommend mounting the control on the center
console as shown below using the Velcro provided.
Page 17
PSS-20WRA Wiring Diagram For Alpine Restyle Headunit
Alpine Restyle Headunit Recommended Sound Settings
To OBDII Connector
To Vehicle Connectors
OEM Audio
20-pin Gray Connector
Power/Speaker
16-pin Green Connector
Front
63Hz Level +5 Medium
140Hz Level +6 Medium
200Hz Level -8 Medium
450Hz Level -1 Narrow
560Hz Level -10 Narrow
1.1kHz Level -04 Medium
4kHz Level +2 Medium
8kHz Level +2 Wide
16kHz Level +2 Wide
Jeep Wrangler
UNLIMITED 17/20
Rear
56Hz Level +5 Wide
80Hz Level +8 Wide
200Hz Level -10 Medium
500Hz Level -2 Narrow
800Hz Level +3 Medium
1.8kHz Level +5 Medium
3.6kHz Level +4 Wide
8kHz Level +2 Wide
11kHz Level +3 Narrow
X-Over
Front
63Hz Slope 18db Level -2
63Hz Slope 18db Level -4
125Hz Slope 12db Level 0
Time Correction
FL 1.2 FR 0
RL 2.4 RR 0.7
SL 0.8 SR 0.8
iDatalink MAESTRO Module
For a detailed Alpine Restyle headunit wiring diagram
refer to it’s corresponding installation manual.
Front
Front
NOT USED
Rear
Blue/White
Amp Turn-on
4 PIN WHITE CONNECTOR
Rear
4 PIN BLACK
CONNECTOR
Front
Rear
Blue
Amp Turn-On
RED
To Battery Cable
BLACK
To Chassis
Ground
LRL
Front
Rear
RCA Adapter
WHITE/GRAY
Front
Rear Subwoofer
To Speaker Output
L
R
Connect to Alpine Restyle
R
headunit low level output
Subwoofer
RED/WHITE
RCA Adapter
RCA Adapter
GREEN/PURPLE
RED/WHITE
RCA Adapter
L
R
Amplifier Speaker Wiring
CH 1 - White (+) White/Black (-)
CH 2 - Gray(+) Gray/Black (-)
CH 3 - Green (+) Green/Black (-)
CH 4 - Purple (+) Purple/Black (-)
MRV-F300
BATTERY
RED
BLACK
GROUND
REMOTE
BLUE
To Ve hicle’s Battery POSITIVE (+) Terminal
Hi/Lo
Adapter
LRL
Input Signal
R
CH 1 - White (L)
CH 2 - Gray (R)
CH 3 - Green (L)
CH 4 - Purple (R)
POWER AMPLIFIER MRV-F300 SUBWOOFER PWE-S8
NOTE: FOR BEST PERFORMANCE SET AMPLIFIER AND SUBWOOFER TO RECOMMENDED SETTINGS AS
SHOWN ABOVE
Page 18
PSS-20WRA Wiring Diagram Aftermarket Headunit
Jeep Wrangler
UNLIMITED 18/20
Power/Speaker
16-pin Green Connector
Front Speakers
Rear
4 PIN BLACK CONNECTOR
To Vehicle Connectors
OEM T-HARNESS
ADAPTER
4 PIN WHITE CONNECTOR
Blue
Amp Turn-On
Blue/White
Amp Turn-On
To 3rd party wire harness and
radio replacement interface
SubwooferRearFront
High Level Out
NOT USED
BLACK
To Chassis
Ground
RED
To Battery Cable
Front
Rear
Subwoofer
Front
WHITE/GRAY
RCA Adapter
Rear
GREEN/PURPLE
RCA Adapter
Subwoofer
RED/WHITE
RCA Adapter
Subwoofer main connector
* Wire Harness and Interface sold separately
L
R
L
Connect to aftermarket
R
headunit low level output
L
R
RED/WHITE
RCA Adapter
L
R
Amplifier Speaker Wiring
CH 1 - White (+) White/Black (-)
CH 2 - Gray(+) Gray/Black (-)
CH 3 - Green (+) Green/Black (-)
CH 4 - Purple (+) Purple/Black (-)
MRV-F300
To Ve hicle’s Battery POSITIVE (+) Terminal
To Speaker Output
Hi/Lo
Adapter
LRL
RED
BATTERY
Input Signal
R
CH 1 - White (L)
CH 2 - Gray (R)
CH 3 - Green (L)
CH 4 - Purple (R)
BLACK
GROUND
BLUE
REMOTE
POWER AMPLIFIER MRV-F300 SUBWOOFER PWE-S8
NOTE: FOR BEST PERFORMANCE SET AMPLIFIER AND SUBWOOFER TO RECOMMENDED SETTINGS AS
SHOWN ABOVE
Page 19
PSS-20WRA Wiring Diagram For Factory Headunit
To Vehicle Connectors
Power/Speaker
16-pin Green Connector
OEM T-HARNESS
ADAPTER
Jeep Wrangler
UNLIMITED 19/20
To OEM Headunit
Front Speakers
Rear
4 PIN WHITE CONNECTOR
4 PIN BLACK CONNECTOR
To Battery Cable
BLACK
To Chassis
Ground
RED
High Level Out
SubwooferRearFront
Subwoofer
RearFront
Blue
Amp Turn-On
Subwoofer main connector
To Speaker Output
High Level Pass Through
MRV-F300
Subwoofer
Level Remote
Amplifier Speaker Wiring
CH 1 - White (+) White/Black (-)
CH 2 - Gray(+) Gray/Black (-)
CH 3 - Green (+) Green/Black (-)
CH 4 - Purple (+) Purple/Black (-)
RED
BATTERY
BLACK
GROUND
REMOTE
BLUE
To Ve hicle’s Battery POSITIVE (+) Terminal
To Speaker Level Input
POWER AMPLIFIER MRV-F300 SUBWOOFER PWE-S8
NOTE: FOR BEST PERFORMANCE SET AMPLIFIER AND SUBWOOFER TO RECOMMENDED SETTINGS AS
SHOWN ABOVE
Page 20
UNLIMITED 20/20
Troubleshooting Guide
Symptom Possible Cause Remedy
1 System will not turn on Missing or blown fuse at the battery Insert or replace fuse
Radio’s Remote Turn-On wire may be
disconnected.
2 Volume is too loud with
aftermarket headunit.
3 Subwoofer sounds very
low.
4 One of the speakers has
no sound.
5 Airbag light is on Failed to disconnect the battery while
6 System turns on only on
radio source
7 No Sound and amplier
light is blinking Red
8 No Sound and amplier
light is solid Red
Speaker level out is connected at the
T-Harness.
Ampliers gain control has not been
properly adjusted.
Gain level may be down to the lowest
setting.
Audio Phase may be reversed. Ensure that the PHASE is set to 0˚.
Disconnected pin or loose connection. Check all connections to the speaker,
working on the vehicle.
Aftermarket Power Antenna wire is
connected to amp
Operating temperature is high. Decrease the vehicle’s interior
Amplier circuits abnormal. An
electrical short has occurred, or supply
current is too high.
Verify that Remote Turn-On wire is
connected.
Ensure that the low level RCA adapters
are used in aftermarket headunit system
(refer to the corresponding wiring
diagram).
Refer to the corresponding system
diagram.
Adjust level to reccommended setting
(refer to the corresponding wiring
diagram).
loose pins, disconnected terminals etc..
Disconnect the battery and re-connect
after 5 minutes. If problem is not solved,
the vehicle will have to be taken to a Jeep
dealer.
Connect the Remote Turn-On wire (Blue/
White) to the Blue wire on the amplier
harness.
temperature to a normal level. The
indicator color changes to blue.
Turn off the power and correct the short.
Then turn on the unit and verify that the
indicator color has changed to Blue.
Jeep Wrangler
Loading...