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T-Spec JP-18AMP-2

Dual 4-gauge wiring and mounting kit for adding a 4-channel amp and a sub amp to your select 2018-up Jeep Wrangler JL or 2020-up Gladiator JT

Item # 120JPAMP2

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Item # 120JPAMP2

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About the T-Spec JP-18AMP-2

Buck Pomerantz

Complete amp kit for your Jeep

Jeep owners know there's very little space available for mounting aftermarket amplifiers when upgrading the sound system. T-Spec's JP-18AMP-2 provides two custom-fit under-seat amp racks plus a complete wiring kit so you can power up the sound of your aftermarket system with no worries about where to fit the amps or what wires to use. The JP-18AMP-2 kit was designed for installing a 4-channel amp under the driver's seat and a mono subwoofer amp under the passenger seat.

Product highlights:

  • dual amplifier wiring kit with under-seat mounting brackets
  • fits select 2018-up Jeep Wrangler JL and 2020-up Gladiator JT vehicles
    • designed for use with an aftermarket receiver
    • not compatible with factory amplified systems
  • black powder-coated amp racks
    • fits under passenger and driver's seat
    • mounting areas: 11-1/2" x 7-1/2"
  • 4-gauge power and ground cables — made to length with ring terminals and protective flex looms
  • 4-channel RCA cable, 2-channel RCA cable, remote wire, and 12-gauge speaker wire — made to length
  • T-harness retains use of factory speaker wiring and allows option for using receiver's high-level outputs
  • vehicle specific fuse holder bracket with 2 MANL fuse holders and 100A fuses
  • mounting and installation hardware included
  • warranty: 3 years
  • Our 60-day money-back guarantee
  • MFR # JP-18AMP-2

What's in the box:

  • 2 Amplifier mounting brackets
  • Factory radio T-harness
  • 8' 4AWG power wire (red)
  • 12.5' 4AWG power wire (gray)
  • Two 3' 4AWG ground wires
  • 2 MANL fuse holders mounted to bracket w/ installed 2' 4AWG battery leads terminated in ring terminals
  • 10' 12AWG speaker wire
  • 8' 2-Channel RCA patch cable w/ attached remote turn-on wire
  • 8' 4-Channel RCA patch cable w/ attached 4 pairs of speaker wires and remote turn-on lead
  • Two 100A mini-ANL fuses
  • 24mm Bolt
  • Four 4AWG crimp-on spade terminals
  • Four 12AWG crimp-on spade terminals
  • Ten 18AWG crimp-on spade terminals
  • Four 4AWG terminal boots (red & black)
  • Four 12AWG terminal boots (red & black)
  • Ten 18AWG terminal boots (6 red / 4 black)
  • Four 4AWG ferrules (red & black)
  • Four 12AWG ferrules (red & black)
  • Ten 18AWG ferrules (6 red / 4 black)
  • Three 1-1/2" sections of heat-shrink tubing
  • Twenty 8" wire ties
  • Installation instructions

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More details on the T-Spec JP-18AMP-2

Mark G.

Product Research


Overview: The Metra JP-18AMP-2 Dual-Amp Installation Kit includes all the necessary parts to install a 4-channel amplifier, a subwoofer amplifier, and subwoofer in select Jeep Wrangler and Gladiator vehicles (amps and subwoofer sold separately). The installation kit includes two amp mounting bracket, designed to install under each seat; pre-cut 4 AWG power & ground wires; 12 AWG speaker wire; three 8' pairs of loomed RCA patch cables; and a factory radio T-harness that lets you use the factory speaker wires. All wiring features pre-installed braided loom for added protection. Two mini-ANL fuse holders are included that are mounted to a single bracket for installing near the vehicle battery, and two 100A mini-ANL fuses. Other accessories include 4-, 12-, and 18-guage crimp-on spade terminals, 4-, 12-, and 18-guage wire ferrules, rubber terminal boots, 3 sections of heat-shrink tubing, and twenty 8" wire ties. The included installation guide provides detailed step-by-step instructions.


  • The Metra JP-18AMP-2 Dual-Amp Installation Kit is designed for use with an aftermarket radio only. Factory radio integration is not provided.
  • The included amp mounting brackets are designed for small form-factor amplifiers.

Compatibility: The Metra JP-18AMP-2 Dual-Amp Installation Kit is designed specifically for 2018-up Jeep Wrangler JL and 2020-up Jeep Gladiator JT vehicles without a factory amplified sound system.

Amp Mounting Bracket Dimensions: Both brackets feature an 11.5" x 7.25" mounting area with three sides including pre-drilled screw holes at 11" x 7" for mounting an amplifier.

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