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Publications No.
Issue Date
INSTALLATION
INSTRUCTIONS
Accessory Application
© 2008 American Honda Motor Co., Inc. – All Rights Reserved. AII 40181 (0808) 1 of 8
08B54-SVA-1001-91
AII 40181
BASS SPEAKER SYSTEM 2009 CIVIC
2-DOOR
(DX, LX) AUG 2008
PARTS LIST
Bass Speaker System Attachment Kit (sold
separately):
P/N 08B54-SVA-100
Bass speaker system wire harness
Right bracket
Left bracket
2 Washer-bolts
2 Clip nuts
10 Wire ties
3 EPT sealers
Fuse seal
Oval cushion
User’s Information
Bass Speaker System Kit (sold separately):
P/N 08A54-SNA-100
2 Bass speakers
Bass unit
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2 of 8 AII 40181 (0808) © 2008 American Honda Motor Co., Inc. – All Rights Reserved.
TOOLS AND SUPPLIES REQUIRED
Phillips screwdriver
Flat-tip screwdriver
10 mm wrench
10 mm Socket
Ratchet
Diagonal cutters
Shop towel
Isopropyl alcohol
Plastic Trim Tool (T/N SILTRIMTL10)
Illustration of the Bass Speaker System Installed on
the Vehicle
INSTALLATION
1. Make sure you have the anti-theft codes for the
audio unit, then write down the audio presets.
2. Disconnect the negative cable from the battery.
Customer Information: The information in this
installation instruction is intended for use only by skilled
technicians who have the proper tools, equipment, and
training to correctly and safely add equipment to your
vehicle. These procedures should not be attempted by
“do-it-yourselfers.”
871504AH
BASS
SPEAKERS
BASS UNIT
3. Open the trunk lid. Pull the release handle on the
bottom of the rear shelf to tilt the rear seat to the
front.
4. Remove the trunk spring protector (four clips).
871505AH
RELEASE
HANDLE
FRONT
REAR
SEAT
871506AH
REAR SHELF
TRUNK SPRING
PROTECTOR
4 CLIPS
FRONT
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© 2008 American Honda Motor Co., Inc. – All Rights Reserved. AII 40181 (0808) 3 of 8
5. In the trunk, unplug the vehicle 2-pin connector from
the high-mount brake light.
6. Remove the rear speaker tray (10 clips and four
tabs) while lightly pulling up the end of the rear
speaker tray as shown.
• Attach clips left on the vehicle panel onto the
rear speaker tray.
871507AH
FRONT
HIGH-MOUNT BRAKE LIGHT
2-PIN CONNECTOR
TRUNK
LIGHT
REAR SHELF
871508AH
REAR SPEAKER
TRAY
FRONT
10 CLIPS
4 TABS
Installing the Bass Speakers
7. Remove the right and left vehicle speakers (two tabs
and one screw for each speaker).
8. Install the right and left bass speakers using the
screws removed in step 7.
871509AH
TAB
VEHICLE
SPEAKER
SCREW
FRONT
2 TABS
871510AH
2 TABS
BASS
SPEAKER
SCREW
(reused)
FRONT
TAB
SQUARE
HOLE
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4 of 8 AII 40181 (0808) © 2008 American Honda Motor Co., Inc. – All Rights Reserved.
Installing the Bass Unit
9. Clean the back of the bass unit with isopropyl alcohol
on a shop towel. Be sure to clean the outer edge on
the back of the bass unit as well.
10. Align the inner circle of the oval cushion with the
hollow edge on the back of the bass unit, then attach
the oval cushion to the bass unit.
11. Fold the excess oval cushion down around the bass
unit.
5603132H
OVAL
CUSHION
BACKING
BASS UNIT
HOLLOW
on back of
bass unit
5603141H
OVAL CUSHION
(Fold down to attach.)
BASS UNIT
OVAL
CUSHION
12. Remove the four screws from the bass unit, and
secure the right and left brackets to the bass unit with
the four screws.
13. DX Models:
Confirm that the HIGH CUT and GAIN adjustments
on the bass unit are at the five o’clock position.
LX Models:
Adjust the HIGH CUT and GAIN adjustments on the
bass unit to the nine o’clock position.
871511AH
LEFT
BRACKET
BASS
UNIT
RIGHT
BRACKET
4 SCREWS
(Reuse.)
4 SCREWS
(Do not remove.)
LX
Adjust to the nine
o’clock position.
DX
Should be at the five
o’clock position.
“HIGH CUT” AND “GAIN” ADJUSTMENTS
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© 2008 American Honda Motor Co., Inc. – All Rights Reserved. AII 40181 (0808) 5 of 8
14. Slide the two clip nuts into the square holes in the
rear shelf.
15. Mount the bass unit to the rear shelf with two
washer-bolts.
871512AH
BASS
UNIT
CLIP
NUT
SQUARE
HOLE
FRONT
REAR SHELF
2 WASHER-BOLTS
NOTE: If installing the bass unit underneath a CD
changer, secure them to the rear shelf with two washer-
bolts and two clip nuts as shown.
871122AH
BASS UNIT
BRACKET
CD CHANGER
CLIP NUT
CD
CHANGER
BRACKET
REAR SHELF
WASHER-BOLT
BASS UNIT
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6 of 8 AII 40181 (0808) © 2008 American Honda Motor Co., Inc. – All Rights Reserved.
Routing the Bass Speaker System Wire Harness
16. Reinstall the rear speaker tray removed in step 6.
17. Plug the bass speaker system wire harness 14-pin
connector into the bass unit.
18. Using a flat-tip screwdriver wrapped in a shop towel,
remove the trunk light (two tabs).
19. Unplug the vehicle 2-pin connector from the trunk
light.
871513AH
BASS SPEAKER
SYSTEM WIRE
HARNESS 14-PIN
CONNECTOR
FRONT
BASS UNIT
871514AH
FRONT
TRUNK LIGHT
SHOP
TOWEL
FLAT-TIP
SCREWDRIVER
VEHICLE 2-PIN
CONNECTOR
TRUNK
LIGHT
20. Route the bass speaker system wire harness over
the torsion bars.
21. Plug the bass speaker system wire harness 2-pin
connector (blue) into the trunk light, then plug the
vehicle 2-pin connector into the bass speaker
system wire harness 2-pin connector (blue) taped to
the harness.
22. Plug the bass speaker system wire harness 2-pin
connector into the high-mount brake light.
23. Route the high-mount brake light 2-pin connector
over the torsion bars, then plug it into the 2-pin
connector taped to the bass speaker system wire
harness.
871515AH
HIGH-MOUNT
BRAKE
LIGHT 2-PIN
CONNECTOR
TRUNK
LIGHT
VEHICLE 2-PIN
CONNECTOR
FRONT
TORSION
BARS
BASS UNIT
BASS SPEAKER
SYSTEM WIRE
HARNESS 2-PIN
CONNECTOR
(Blue)
BASS SPEAKER
SYSTEM WIRE
HARNESS 2-PIN
CONNECTOR
(Blue)
871516AH
BASS SPEAKER
SYSTEM WIRE
HARNESS
FRONT
2-PIN CONNECTOR
HIGH-MOUNT BRAKE LIGHT
2-PIN CONNECTOR
2-PIN CONNECTOR
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© 2008 American Honda Motor Co., Inc. – All Rights Reserved. AII 40181 (0808) 7 of 8
24. Attach the fuse seal “5A OPTION FUSE” to the fuse
case taped to the bass speaker system wire
harness.
25. Unplug the vehicle 2-pin connector from the vehicle
right and left speakers, then plug them into the 2-pin
connectors taped on the long branch of the bass
speaker system wire harness.
871517AH
BASS SPEAKER
SYSTEM WIRE
HARNESS
FUSE CASE FUSE SEAL
“5A OPTION FUSE”
FRONT
871518AH
BASS SPEAKER SYSTEM
WIRE HARNESS
FRONT
VEHICLE 2-PIN CONNECTOR
for left speaker
VEHICLE 2-PIN CONNECTOR
for right speaker
2-PIN
CONNECTORS
26. Plug the bass speaker system wire harness 2-pin
connectors into the right and left bass speakers.
871519AH
BASS SPEAKER
SYSTEM WIRE
HARNESS 2-PIN
CONNECTOR
FRONT
BASS SPEAKER
SYSTEM WIRE
HARNESS
BASS SPEAKER
SYSTEM WIRE
HARNESS 2-PIN
CONNECTOR
BASS
SPEAKER
BASS
SPEAKER
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8 of 8 AII 40181 (0808) © 2008 American Honda Motor Co., Inc. – All Rights Reserved.
Securing the Bass Speaker System Wire Harness
27. Wrap one EPT sealer around the three connector
joints in the areas shown, then secure them with
three wire ties.
28. Using seven wire ties, secure the bass speaker
system wire harness to the vehicle harness in the
areas shown. Make sure that the bass speaker
system wire harness does not interfere with the
torsion bars during the closing and opening of the
trunk lid.
871520AH
FRONT
3 EPT SEALERS
3 WIRE TIES
BASS SPEAKER SYSTEM
WIRE HARNESS
871521AH
FRONT
BASS SPEAKER SYSTEM
WIRE HARNESS
4 WIRE TIES
VEHICLE
HARNESS
3 WIRE TIES
29. Check that all wire harnesses are routed properly
and all connectors are plugged in.
30. Reinstall all removed parts.
31. Connect the negative cable to the battery and check
operation of all lights and other electrical
accessories.
32. Enter the anti-theft codes for the audio system, and
reset the radio station presets.
33. Reset the clock.
34. Set all the volume control adjustments on the vehicle
audio unit, such as BASS, TREBLE, FADER, and
BALANCE, to the center position.
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