Kicker SSIEXT14 Installation Manual

Subwoofer

Subwoofer Body

25A Fuse

SSIEXT14

Designed for

2014 and newer Chevrolet® Silverado & GM

2015 and newer Chevrolet® Silverado & GMC® Sierra Double-Cab 2500/3500 with base or premium radio

C® Sierra Double-Cab 1500 series with base or premium radio

Subwoofer Assembly

©2014 Stillwater Designs

SSIEXT14-A3-20141002

Harness

Power Harness

Wire Ties x 6

Wire Taps x 2

Adapter Harness

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Installation

Fig. 1

Connect Power

Fig. 2

Fig. 3

Connect Ground

1. Disconnect negative battery cable from battery. (For diesel engines with dual batteries disconnect both
negative cables)

2. Snap loose the driver’s side front and rear threshold panel along the bottom of the door openings.

3. Remove the red battery terminal cover and then the power distribution cover next to the battery on the
passenger’s side.

4. Remove the fuse from the fuse holder on the amplifier and subwoofer power harnesses. Connect the ring
terminals of both harnesses to the power lug identified in figure 1 and torque to 9 +/- 1.5 Nm.

5. Route the power wire along the fire wall to the factory grommet on the driver’s side and secure with wire
ties.

6. Using a razor knife, make a cross shaped incision in the protrusion large rubber grommet and feed the
power wires straight through the hole on the cabin side of the grommet. Fig. 2

7. Install supplied connector on the end of the power harness inside the cabin. The black connector should
have a block out plug installed in one side to prevent the power wire from being installed into the wrong
position in the connector. Push the terminals in until they click and lock into place.

8. Connect the subwoofer power harness two-pin power connector to the subwoofer harness two-pin power
connector.

9. Connect the black ground wire of the subwoofer harness to the bolt next to the park brake pedal indicated
in Fig 3 Torque to 9 +/- 1.5 Nm

wire(s) to this lug

wire to this bolt.

2

Note: Subwoofer Input Connection is the same for Premium and Non-Premium factory audio systems.

Fig. 5

Fig. 4

Fig. 6

Fig. 7

10. Locate the brown with blue stripe wire and blue wire that are twisted together in the factory harness near
the parking brake pedal and install one of the blue self-stripping connectors onto each wire. Fig. 4 and 5

11. Connect the green wire of the adaptor harness to the brown/blue stripe wire of the vehicle harness and the
brown wire of the adaptor harness to the blue wire of the vehicle harness. Connect the two pin connector
of the adapter harness to the two pin connector of the subwoofer harness. Fig. 5

12. Continue routing the subwoofer harness down the driver’s side of the vehicle to the back wall. Open the
cover of the wire tray along the threshold of the door, install wire and replace the tray cover.

13. Route the subwoofer harness under the carpet along the back wall toward the passenger’s side of the
cabin. Once the harness is routed to the passenger’s side. Allow the remaining length of harness to lay on
top of the carpet and exit from beneath the seat between the jack and the center seatbelt receptacle.

Subwoofer Mounting

14. Remove the two nuts indicated in Fig. 6

15. Install the enclosure over the studs.

NOTE: For trucks with split rear bench seat, install the two supplied washers over the stud closest
to the passenger’s side.

16. Connect the subwoofer wiring to the subwoofer harness and set the enclosure into place over the seat
studs. Fig. 7

17. Reinstall the rear seat nuts and torque to 109 Nm (80 ft/lb)

3

Troubleshooting the Kicker Integrated Systems

Symptom

Possible Cause

Solution

Fuse not installed in inline fuse
harness

Install fuse into fuse holder.
placement

Low battery voltage

Recharge the battery

connected

connection

to insure it is a good ground

alone subwoofer kit)

music

for loose connections.

fuse location and value

Low battery voltage

Recharge the battery

If you experience a problem once the subwoofer or amplifier are installed use this guide to locate the trouble.

The radio is working, but the Subwoofer is not working:

• Check the battery voltage to make sure it is not discharged below 11 volts.

• Check the negative battery cable to see if it has been securely tightened back on the battery.

• Check the inline fuse located near the battery to make sure it is plugged in completely, and not blown.

• Check the inline +12 volt power connector near the firewall to make sure it is plugged in securely.

• Check the inline connectors near the subwoofer enclosure to make sure they are plugged securely.

• Check the ground wire connection to make sure it is tightly secured to the proper ground in the vehicle.

• Check the audio input signal connection to make sure it is secure and connected to the proper wiring.

• Test with different music in case there is no low frequency audio in the initial sound check.

No Subwoofer Output

Radio Not Coming On

4

holder on subwoofer and / or amp

Negative battery cable not

Power wire connector not
connected to body harness

Ground wire not grounded properly Check ground wire with voltmeter

Balance or fader controls not set to
neutral position

No low frequency information in

Subwoofer harness not properly
/ completely connected to sub­woofer.

Blown radio fuse

Refer to instructions for correct

Reconnect negative battery cable

Connect power wire to body
harness. Check for loose

Set balance and fader control to
center settings. (only effects stand

Test with several different songs

Securely fasten both of the
connectors on the subwoofer
harness to the subwoofer. Check

Refer to owner's manual for radio

If you continue to experience problems after troubleshooting, please contact KICKER Technical Support at

[phone] ext. 6009, or [e-mail]

.

P.O. Box 459 • Stillwater, Oklahoma 74076 • USA • (405) 624–8510

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