Amplifier/ Subwoofer Installation Guide | '18- '23 JL Wrangler/ '20- '23 JT Gladiator

Step 2: Route Power and Ground Wires

• Power Wire:

  • Route the 6-gauge power wire from the battery through the driver-side firewall (use the factory grommet or drill a small hole if necessary).

  • Run the power wire along the driver-side trim panels to the amplifier under the seat.

• Ground Wire:

  • Use the factory ground point under the driver seat (near the transmission tunnel).

  • Ensure a solid connection by removing any paint at the contact point.

• Remote Turn-On Wire:

  • Route the blue remote wire from the PAC module (if using a factory radio) or from the remote wire of an aftermarket radio.

Step 3: Remove Radio & Access Signal Wiring

Factory Radio Installation (Using PAC Module)

• If using the factory radio, install the PAC AP4-CH41 module behind the glove box.

• Use the T-harness to connect the PAC module to the radio.

• If your Jeep isn’t factory amplified, make sure DIP switch #4 is DOWN on the PAC module.

• Connect the 9-wire harness from the PAC module:

  • Match speaker wires color to color.

  • Connect the blue remote turn-on wire from the PAC module to the amp’s remote input.

• Run RCA cables from the PAC module to the amplifier:

  • Front RCA → Channels 1 & 2

  • Rear RCA → Channels 3 & 4

  • Subwoofer RCA → Channel 5

Aftermarket Radio Installation

• If using an aftermarket radio, connect RCA cables from the radio’s front, rear, and subwoofer pre-outs to the amplifier.

• Connect the blue remote turn-on wire from the radio harness to the amplifier’s remote input.

Step 4: Install the 5-Channel Amplifier (Under Driver Seat)

• Mounting Position: Set amp sideways with RCA and control knobs facing the door for easy tuning.

• Connections:

  • Power Wire (6-gauge): Connect to the +12V terminal on the amp.

  • Ground Wire: Secure to the driver seat factory ground point.

  • Remote Turn-On Wire: Connect to the blue remote wire from the PAC module or aftermarket radio.

  • Speaker Wires:

• Speaker Wires:

  • Front speakers → Channels 1 & 2

  • Rear speakers → Channels 3 & 4

  • Subwoofer → Channel 5

  • Pre-terminated ferrule connectors make wiring easy.

  • RCA Connections:

    • Front & Rear RCA cables → Channels 1-4
    • Subwoofer RCA cable → Channel 5

       

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