How to Install a Kicker in a Toyota Avalon

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Kicker manufactures a wide array of aftermarket stereo components, namely amplifiers and subwoofers. To install the Kicker subwoofer into a Toyota Avalon you will need to first include an aftermarket amplifier. The amplifier requires connection to the head unit via an amplifier wiring kit. You can trust the Kicker installation to a professional car audio technician, or you can obtain the requisite adapters and wiring kits and do the job yourself.

Things You'll Need

  • 10 mm socket wrench
  • Amplifier wiring kit
  • Trim panel removal tool
  • Phillips-head screwdriver
  • Amplifier
  • Lift the Avalon's hood and remove both of the battery cables from the respective battery terminals with a wrench. Place the negative battery cable aside to prevent shorting the Toyota's electrical system during the installation. Place the positive battery cable aside to establish the power supply for the amplifier.

  • Place the ring terminal from the amplifier wiring kit onto the positive battery terminal. Replace the positive battery cable clamp back onto the terminal and tighten the bolt with the wrench. Remove the fuse from the ring terminal and keep it available for reinsertion once the new Kicker components have been installed.

  • Connect the power supply cable included in the amplifier wiring kit into the end of the ring terminal. The power cable and ring terminal are responsible for creating an independent power source for the amp and subwoofer. Feed the power cable through the firewall on the left side of the Toyota's engine compartment. The firewall separates the engine bay from the interior cabin of the Avalon. The opening into the cabin is on the left side of the firewall as you face forward in the driver's seat. Move to the inside of the vehicle.

  • Lift the armrest and pry the thin panel at the forward edge of the compartment's opening away from the center console with a trim panel removal tool. Remove the two screws beneath the panel with a Phillips-head screwdriver.

  • Lift the dash panel away from the center console by hand and disconnect the cigarette lighter wiring connector from the back of the panel. Set the panel aside.

  • Remove the small trim panel piece from below the climate control panel with the trim panel tool. Remove the two bolts from the stereo/climate control panel with a 10 mm socket and ratchet.

  • Pry the vent housing panel from the top of the stereo assembly with the trim panel tool. Remove the two bolts at the top corners of the stereo assembly with the socket and ratchet. Slide the stereo from the dashboard stereo dock and disconnect the stereo wiring connectors from the back of the unit.

  • Plug the Toyota's stereo wiring connectors into the wiring harness adapter leads. Plug the adapter's lead connectors into the corresponding outlets on the back of the factory stereo unit. Connect the patch cables to the wiring harness adapter leads labeled for auxiliary input. The correct leads will be marked to show where the connections are to be made or you can see the adapter's accompanying manual for guidance.

  • Feed the patch cables through the back of the Toyota's stereo mounting dock and down to the floor of the passenger side of the vehicle. Slide the stereo back into the dock and replace the bolts at the top and bottom edges of the assembly. Replace the vents above the stereo, pressing them into place by hand. Replace the lower panels and screw in the bolts at the forward-most edge of the center console storage compartment. Close the compartment's lid.

  • Place the Kicker amplifier and subwoofer in the trunk. Route the power supply cable along the driver's side of the Toyota and feed it through the space between the rear left seat and into the trunk. Route the patch cables along the passenger side of the vehicle and into the trunk via the right rear seat.

  • Plug the power supply cable into the power input on the amplifier. Connect the patch cables to the signal inputs on the left side of the same panel as the power input. Connect the speaker wires to the speaker outputs on the amp -- one in the left and one in the right input.

  • Connect the speaker wires to the left and right inputs on the Kicker subwoofer's outlet panel. The panel gives the option for RCA and traditional speaker wire connection. Connect the amplifier's grounding output to one of the screws under the carpeting in the Avalon's trunk near the rear seats with the amplifier wiring kit's grounding wire. Return to the Toyota's engine compartment.

  • Replace the negative battery cable clamp onto the negative battery terminal post and tighten the bolt with the wrench. Insert the fuse into the ring terminal's fuse slot and close the Avalon's hood.

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