Note: Subwoofer Input Connection is the same for Premium and Non-Premium factory audio systems.
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)
Fig. 5
Fig. 4
Fig. 6
Fig. 7
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Summary of Contents for SSIEXT14
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