Audx 5 Channel Amplifier and Subwoofer Installation Guide | 2024+ Tacoma Non-Hybrid

Welcome to the installation guide for your 2024+ Toyota Tacoma Audx Plug & Play 5-Channel Amp & Subwoofer Kit from Trail Grid Pro! This step-by-step guide is designed to make the installation process as smooth as possible, whether you're a seasoned DIYer or tackling your first head unit upgrade.

In this guide, you’ll find:

• 📢 Important Updates: The written guide includes the latest updates and adjustments that may not be shown in the video, ensuring you have the most up-to-date instructions for a flawless installation.
• 🎥 Installation Videos: Visual instructions to help you through the process, including a detailed microphone install.
• 🛠️ Parts Included and Tools Needed: A quick list of everything you'll need to get started.
• 📝Step-by-Step Instructions: Clear, easy-to-follow directions from disassembling your dash to securing the new Sony head unit.
• ⚠️ Special Notes: Important information and considerations for your installation.
• 🛠️ Common Troubleshooting Solutions: Quick and effective fixes for common installation and performance issues.

Table of Contents

• Important Updates
• Installation Video
• Parts Included
• Tools Needed
• Step 1: Preparing The Amplifier
• Step 2: Disassembling The Dash
• Step 3: Disassembling Your Tacoma
• Step 4: Making Wiring Connections To Head Unit
• Step 5: Routing The Power Wire
• Step 6: Routing The Ground Wire
• Step 7: Making Connections To Amplifier
• Step 8: Route Subwoofer Wire
• Step 9: Connect Power To Battery
• Step 10: Test System
• Step 11: Mount The Amplifier
• Step 12: Assembling Your Tacoma
• Common Troubleshooting Solutions

📢 Important Updates & Notes

Please check back here for any Important Updates or Notes!

🎥Installation Video

🛠️Parts Included:

• Audx V1K 5 Channel Amplifier
  
• AudX Vehicle Specific T-Harness
• AudX Main Harness
  
• Trail Grid Pro Amplifier Install Kit
• Audx 10" Subwoofer in Loaded Enclosure (If selected)
  
• 10 Zip Ties
• 10 mm Ground Bolt
• Ground Wire Extension
• Female and Male Bullet Connector

🛠️Tools Needed:

📝Step-by-Step Instructions

Step 1: Preparing The Amplifier

• Remove the amplifier from its packaging and set on work area. 
• Remove the bass control knob from amplifier box and set on work area. 
• Remove the bass control knob switch blank from the install parts bag. 
• Using a #1 phillips head screws driver, remove the 4 screws securing the cover plate on the amplifier. Be careful not to lose the cover plate screws, we will need these later in the installation. 
• Remove the amplifier mounting bracket from its packaging. 

Mounting the amplifier to the amplifier bracket:

• Using the provided "Amplifier Mounting Screws" hardware, secure the amplifier to the bracket:
  • Place the amplifier on the bracket with the wire connections and EQ settings facing away from the vertical bend in the bracket. 
  • Use the phillips head screws, flat washer, lock washer and nut to secure the bracket to the amplifier. 
  • Starting from under the bracket place the screw through the bracket, then the mounting tabs on the amplifier, place a flat washer, then a lock washer and then place and secure the nut. Tighten but be careful not to ver tighten the hardware, it only needs to be finger tight. 
  • Repeat for a four mounting locations on the bracket. 

Prepare the bass control knob:

• Remove the dial on the bass control knob by pulling it off the adjustment stem.
• Remove the locking nut using a small wrench. 
• Remove the back cover of the bass control knob by prying it off.
• Remove the adjustment stem and circuit board. 
• Place the adjustment stem of the bass control knob into the switch blank. 
• Secure the adjustment stem with the locking ring. 
• Turn the adjustment stem all the way to the left. 
  • Install the knob being sure to line up the indicator mark to the adjustment stem. 

Step 2: Disassembling the Dash

Step 3: Disassembling Your Tacoma

• Remove the four bolts securing the front seat using a T47 Torx bit.
• Disconnect any wire connections from the seat bottom.
• Remove the driver seat from the vehicle and set to the side. 

Remove the door sill plates:

• Remove the driver door sill plate by gently pulling up
• Repeat the same for the driver rear door if you are installing the subwoofer.
• Unhook the carpet from the door sill mounts to release the edge of the carpet. 
• Remove the kick panel on the driver side at the bottom of the A-pillar.
  • Remove the plastic retainer securing the panel.
  • Gently pull out on the panel to remove.

• Pull up the carpet the best you can under where to driver seat was. 
• Remove the two 10 mm bolts that secure the ANS module to the floor. Save the bolts, we will reuse those soon.  
• Remove the connector from the module by depressing the tab. Completely remove the ANS module, this will no longer be needed. 

Step 4: Making Wiring Connections To Head Unit

Main harness to head unit:

• Using the provided amplifier harness, connect the black male 10 pin connector into the back of the factory radio. 
• Connect the black female 10 pin connector from harness to the male 10 connector coming from the vehicle. 
• Connect all other harness from the truck to the head unit. 
• Using a phillips head screw driver or socket loosen one of the factory bolts on the side of the head unit and secure the harness grounding wire. 
  • Remove the bolt on the side of the factory head unit,
  • Insert the bolt through the ring terminal on the end of the ground wire extension and
  • Secure the bolt back to the factory radio
• The Blue/White stripe wire will not be used in this application. 

Secure the factory head unit:

• At this point you can place the factory radio back into the dash. 
  • We recommend securing it with one 10 mm bolt until your are completely finished with the install. This way if you need to double check the radio connections, the radio is more easily removed.

Routing the amplifier harness:

• Route the Amplifier side of the harness down the left side of the radio having it come out of the dash near the steering column. 
• Route the amplifier harness along the bottom of the dash over to the door opening, use the provided zip ties to secure the harness as needed. 
• Continue routing the amplifier harness down the A-pillar and to the wire chase along the driver door under where you removed the sill plate. 

Routing the bass control wire:

• Coming from the main harness you will find a 3.5 mm headphone jack, this is the bass control knob wire. 
• Select a suitable square switch blank on your dash where you would like to place the bass control knob. 
• Remove the switch blank; this is best done by pushing it out from the back of the dash or gently prying it out. 
• Route the bass control wire down to and out of the switch blank hole. 
• Connect the 3.5 mm head phone jack to the jack on the bass control knob. 
• Feed any extra wire back into the dash and press the bass control knob assembly into place. The switch blank should snap into place and fit flush with the dash. 

Step 5: Routing the Power Wire

Running the power wire from battery:

• Mock up where you want to mount the fuse block.
• Connect the short length of power wire to the fuse block.
• Attach the other end of power wire to the fuse block.
• Secure using the Allen wrench.
• Place the plastic cover over the completed fuse assembly. 
• DO NOT CONNECT THE POWER WIRE TO THE BATTERY YET!
• Our recommendation is to run the power wire along the inside of the passanger side fender towards the firewall and across the fire wall towards the driver side firewall grommet. 
• Use zip ties to secure the wires so that they are free of moving or hot engine components.
• Locate the main firewall grommet on the passenger side of the vehicle. 
• Locate a spot to cut an "X" in the grommet using a utility knife. Keep in mind that many Toyota firewall grommets have an exterior and interior membrane that you will need to cut through. Take extra care to not damage any other vehicle wiring when cutting your "X."
• You may choose to use a wire fish or metal coat hanger to assist in passing the power wire from the engine bay to the interior. 
• Route the power wire down the kick panel and through the factory wire channel, under the carpet and to the power side of the amplifier.  
• Connect the power wire to the amplifier and secure with a 3 mm Allen wrench.

Step 6: Routing The Ground Wire

• Using the provided black ground cable, secure the ring terminal to the pre-threaded factory hole under the carpet. 
• Route the ground cable to where the amplifier will be mounted. 

Step 7: Making Connections To Amplifier

• Place amplifier under carpet on drivers floor.
• Connect the power wire to the amplifier and secure with a 3 mm Allen wrench.
• Connect the ground wire to the amplifier and secure with a 3 mm Allen wrench.
• Connect the 4 pin, and 14 pin connectors from the main harness into the corresponding ports on the amplifier.
• Using the supplied ANS module bypass harness, connect the 8 pin connection into the output port on the amplifier. 
• Connect the larger white connector from the ANS module bypass harness to the vehicle connector that was removed from the ANS module. 

Step 8: Route Subwoofer Wire

• Connect supplied subwoofer speaker wire to the amplifier:
  • Connect to the Subwoofer:
    • Connect the red wire to the sub positive (+) terminal and secure with allen wrench.
    • Connect the black wire to the sub negative (–) terminal and secure with allen wrench..
• Route the subwoofer speaker wire along the wire channel towards the rear storage compartment under the back seat. 
• Route the subwoofer wire to the back wall and through the opening into the storage compartment. 
  • Connect to the Subwoofer:
    • Connect the red wire to the positive (+) terminal.
    • Connect the black wire to the negative (–) terminal.
• Place subwoofer into storage tray to secure. 

Step 9: Connect Power Wire To Battery

Connect the Power Wire:

• Locate the short length of power wire with the pre-connected ring terminal.
• Connect the ring terminal securely to the positive battery terminal.

Step 10: Test System

• Power On and Verify Functionality:
  • Turn on your vehicle and test the audio system.
  • Confirm that both the radio and amplifier are functioning properly.
• Adjust Gain Levels:
  • Choose a song that plays continuously for a few minutes.
  • Turn the volume on your head unit to about 75% of the maximum volume.
  • Using a small flathead screwdriver, adjust the Front to your desired sound level.
  • Repeat the process for the Rear.
  • Adjust the Sub gain last to set your desired bass level.
    • ⚠️ Warning: If you hear distortion, clipping, or audio cutting out, the gain is set too high—reduce accordingly.
• Final Adjustments:
  • Use your head unit’s built-in EQ settings to fine-tune the overall sound to your personal preference.
• Place cover panel on amplifier and secure with provided phillips head screws.

Step 11: Mount The Amplifier

• Rotate the amplifier into place under the carpet, lining up the mounting holes in the amplifier with the factory mounting locations for the ANS module.
• Use the factory bolts to secure the amplifier assembly to the floor. 
• Secure the wiring using the provided zip ties as needed. 

Step 12: Assembling Your Tacoma

• Secure the factory head unit using the four 10 mm bolts. 
• Replace the plastic trim panel by pushing it into place. 
• Replace the kick panel and door sill plates. 
• Place the driver seat into the vehicle:
  • Reconnect any wiring that was attached to the seat. 
  • Secure using the four T47 Torx bolts.

Congratulations on installing your new Audx 5 Channel Amplifier and 10 Inch Subwoofer kit!

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