MB Quart 8 Speaker Plug & Play Bundle Installation Guide | 2010-2024 4Runner

MB Quart 8 Speaker Plug & Play Bundle Installation Guide | 2010-2024 4Runner
Here is a simple and easy breakdown of how to install
MB Quart 8 Speaker Plug & Play Bundle from Trail Grid Pro.


Tools Needed:

  • Panel Removal Tool
  • Philips Head Screwdriver
  • Small Flat Head Screwdriver
  • 10mm Socket with Ratchet Wrench

Step 1

Removing the dash speakers:

  • Use a panel tool to remove the speaker grille.
    • Insert the tool below the grille and pry up gently.
  • Use a 10 mm wrench to remove the two 10mm bolts that secure the speaker mount.
  • Disconnect the wiring connection by depressing the tab.
  • Use a T20 torx bit or 10 mm socket to remove the two screws holding the factory speaker into the speaker mounting bracket.
    • The tweeter bolts have proven to be very tight from the factory. Take your time and avoid stripping the bolts!
  • Remove the connector from the bracket.

Step 2

Installing your new MB Quart dash speakers:

  • Use the two T20 screws to secure the MB Quart speaker to the factory Toyota speaker bracket.
  • Connect the supplied crossover to the wires from the speaker.
    • Match up and connect the 1/4 inch and 1/8th spade connectors.
    • Make sure that the connections are covered by the plastic insulators.
  • Connect the harness to the factory speaker plug from the dash.
  • Tuck the wiring into the dash.
  • Secure the speaker assembly with the two factory 10 mm bolts.
  • Do NOT over tighten.
  • Replace the speaker grille by pushing it into place.

Repeat the same process for the other dash speaker.

Step 3

Remove the front door panel:

  • Remove the trim panel located by the side mirror by pulling off with your hands.
  • Use a panel tool or small pry tool to remove covers:
    • 1st is located behind the door handle.
    • 2nd is located near the top of the grab handle.
    • 3rd is located below the grab handle.
  • Remove the three phillips head screws located behind the covers you just opened.
  • Remove the door panel by pulling with your hands to release the retaining clips around the edge of the door panel.
  • Lift the door panel up and off the window edge.
  • Remove the cables for the door handle:
    • Remove the retainer and swivel to release the ball.
  • Remove the window switch and courtesy light connector by depressing the tabs.
  • Check to make sure that all of the retaining clips are removed from the door and placed back in the door panel.

Step 4

Removing the 6x9 speaker:

  • Remove the speaker wire connector by depressing the tab.
  • Remove the four 10 mm bolts that secure the speaker to the door.
    • Save the bolts as you will reuse them.

Step 5

Installing the 8x10 speaker:

  • Place the speaker in the opening in the door, making sure to line up the four mounting holes with the factory locations. 
  • Secure the speaker to the door using the factory 10 mm bolts. 
  • Using a razor, carefully cut back the tape securing the speaker wire to the main harness to free up additional length in the speaker wire. 
  • Attach the door speaker harness into the speaker housing.

Step 6

Replace the door panel:

  • Check to make sure that all of the retaining clips are replaced in the door panel.
  • Replace the window switch connector and courtesy light connector.
  • Replace the cables for the door handle:
    • Place the ball, swivel and replace the retainer. The White retainer goes on top and the Green retainer goes on the bottom.
  • Place the door panel on the window edge and push down to line up the door panel.
  • Push in around the edge to connect the retaining clips.
  • Replace the three phillips head screws located behind the covers.
    • Silver screw goes behind the door handle.
    • The black screws go back in the other two locations.
    • Close the covers and replace the panel behind the door handle.
  • Replace the trim panel located by the side mirror by pushing into place.

Repeat Steps 4-6 for the other front door.

Step 7

Removing the rear door panel:

  • Use a panel tool or small pry tool to remove covers:
    • 1st is located behind the door handle.
    • 2nd is located near the top of the grab handle.
    • 3rd is located below the grab handle.
  • Remove the three phillips head screws located behind the covers you just opened.
  • Remove the door panel by pulling with your hands to release the retaining clips around the edge of the door panel.
  • Lift the door panel up and off the window edge.
  • Remove the cables for the door handle:
    • Remove the retainer and swivel to release the ball.
  • Remove the window switch connector by depressing the tabs.
  • Check to make sure that all of the retaining clips are removed from the door and placed back in the door panel.

Step 8

Removing the 6.5 inch speaker:

  • Remove the speaker wire connector by depressing the tab.
  • Remove the three 10 mm bolts that secure the speaker to the door.
  • Save the bolts as you will reuse them.

Step 9

Installing the 7 inch speaker:

  • Place the speaker in the opening in the door, making sure to line up the four mounting holes with the factory locations. 
  • Secure the speaker to the door using the factory 10 mm bolts. 
  • Attach the door speaker harness into the speaker housing.

Step 10

Replace the rear door panel:

  • Check to make sure that all of the retaining clips are replaced in the door panel.
  • Replace the window switch connector.
  • Replace the cables for the door handle:
  • Place the ball, swivel and replace the retainer. The White retainer goes on top and the Green retainer goes on the bottom.
  • Place the door panel on the window edge and push down to line up the door panel.
  • Start with the outside of the door panel and work towards the inside of the door.
  • You may need to roll the window down for this step to make it easier to work the top of the door panel back into place.
  • Push in around the edge to connect the retaining clips.
  • Replace the three phillips head screws located behind the covers.
  • Silver screw goes behind the door handle.
  • The black screws go back in the other two locations.
  • Close the covers and replace the panel behind the door handle.

Repeat Steps 8-10 for the other rear door.

Step 11

Removing the rear hatch cover:

  • Remove the pull handle trim piece by prying out with a panel removal tool or small screwdriver.
  • Remove the hatch light assemblies by prying out on one side (The driver side).
  • Remove the hatch cover by releasing the retaining clips around the edge by pulling with your fingers.
  • Lift the cover up and off the window ledge.
  • If any of the retaining clips for the door panel stayed in the door, now is the time to remove them using a panel removal tool and insert them back into the door panel.

Step 12

Remove the 6.5 inch speakers:

  • Disconnect the speaker wires by depressing the tabs.
  • Remove the three 10 mm bolts that hold in the factory speaker. 
  • Lift up and remove the speakers. 

Step 13

Installing your new 7 inch rear hatch speakers:

  • Place the speaker in the opening in the door, making sure to line up the four mounting holes with the factory locations.
  • Secure the speaker to the door using the factory 10 mm bolts.
  • Attach the door speaker harness into the speaker housing.

Step 14

Replace the rear hatch cover:

  • Hang the hatch cover over the window ledge.
  • Line up the retaining tabs and push into place. Push around the edge and in the middle of the panel.
  • Install the pull handle by securing the 10 mm bolt.
  • Replace the pull handle cover piece.
  • Connect the courtesy lights harnesses and insert them back into the hatch.

Step 15

Test your new MB Quart 8 Speaker Bundle.

Pro Tip: These are new speakers and they operate the best following a break in. Go easy on them and break them in easy.

Congratulations on installing your new
MB Quart 8 Speaker Plug & Play Bundle!

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