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Welcome ! Please let us know if you need any help. For other T-harness options please visit T-harness.com. Thank you
Welcome ! Please let us know if you need any help. For other T-harness options please visit T-harness.com. Thank you
Text/Call (602) 320-7004 Email: Support@lljcustoms.com

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Base connector | Harness Accessory| AMP,DSP,LOC

GM/GMC Bose amplifier harness Base connector 2014-2019

GM/GMC Bose amplifier harness Base connector 2014-2019

by LLJ Customs Car Audio Fabrication
Image 1 Description
Image 2 Description

Key Features

  • The base connector is what connects to the factory audio source. EX: radio, factory amplifier)
  • Can be used with a T-harness or a Loopback harness accessory
  • Abrasion resistant loom
  • 100% OFC copper
  • Vehicle OEM connectors
  • Constant 12v +/-
  • Retains ALL Factory functions as they are
  • Designed, Tested and Hand-built by us.
  • An LLJ original creation 1st in the world
  • 5 year warranty guaranteed
$60.00 USD - $60.00 USD
$60.00 USD
$60.00 USD - $60.00 USD
$60.00 USD

IMPORTANT

After adding the Base connector to the cart you can select the Elite harness accessory you need below.

Availability:
Low stock

CADILLAC

  • CADILLAC | 2015-2019 | ATS | With Bose
  • CADILLAC | 2017-2023 | CT6 | With Bose
  • CADILLAC | 2016-202 | XT6 | With Bose
  • CADILLAC | 2016-2024 | XT5 | With Bose
  • CADILLAC | 2019-2024 | XT4 | With Bose
  • CADILLAC | 2020-2022 | CT5V | With Bose
  • CADILLAC | 2019-2014 | CT5 | With Bose
  • CADILLAC | 2019-2024 | CT4V | With Bose
  • CADILLAC | 2019-2014 | CT4 | With Bose
  • CADILLAC | 2024 | LYRIQ | With Bose
  • CADILLAC | 2015-2024 | ESCALADE | With Bose

--------------------------------

CHEVROLET

  • CHEVROLET | 2016-2024 | CAMARO | With Bose or factory amplifier
  • CHEVROLET | 2015-2024 | COLORADO | With Bose
  • CHEVROLET | 2014-2024 | CORVETTE | With Bose
  • CHEVROLET | 2017-2023 | CRUZE | With Bose
  • CHEVROLET | 2018-2023 | EQUINOX | With Bose
  • CHEVROLET | 2023-2024 | EQUINOX EV | With Bose
  • CHEVROLET | 2014-2020 | TRAILBLAZER | With Bose
  • CHEVROLET | 2015-2020 | IMPALA | With Bose or factory amplifier
  • CHEVROLET | 2018-2022 | BLAZER | With Bose
  • CHEVROLET | 2023-2024 | BLAZER EV| With Bose
  • CHEVROLET | 2016-2023 | MALIBU | With Bose or factory amplifier
  • CHEVROLET | 2014-2024 | SILVERADO | With Bose
  • CHEVROLET | 2015-2021 | CAPTIVA | With Bose
  • CHEVROLET | 2015-2024 | SILVERADO HD | With Bose
  • CHEVROLET | 2015-2024 | SUBURBAN | With Bose
  • CHEVROLET | 2015-2024 | TAHOE | With Bose
  • CHEVROLET | 2018-2024 | TRAVERSE | With Bose
  • CHEVROLET | 2016-2023 | VOLT | WITH BOSE

--------------------------------

GMC

  • GMC | 2018-2024 | ACADIA | With Bose
  • GMC | 2015-2022 | CANYON | With Bose
  • GMC | 2014-2024 | SIERRA | With Bose
  • GMC | 2015-2024 | SIERRA HD | With Bose
  • GMC | 2018-2024 | TERRAIN | With Bose
  • GMC | 2015-2024 | YUKON | With Bose
  • GMC | 2015-2024 | YUKON XL |With Bose
  • GMC | 2023-2024 | HUMMER EV | With Bose

--------------------------------

BUICK

  • BUICK | 2013-24 | ENCLAVE | With and without Bose
  • BUICK | 2013-22 | ENCORE | With Bose
  • BUICK | 2020-24 | ENCORE GX | With and without Bose
  • BUICK | 2013-19 | LACROSSE | With Bose
  • BUICK | 2013-18 | REGAL | With Bose
  • BUICK | 2018-20 | REGAL SPORTBACK | With and without Bose
  • BUICK | 2018-20 | REGAL TOURX| With and without Bose
  • BUICK | 2013-19 | VERANO | With Bose
  • BUICK | 2016-19 | CASCADA | With and without Bose
  • BUICK | 2017-24 | ENVISION | With and without Bose
  • BUICK | 2017-24 | ENVISTA | With and without Bose

-At factory Bose amp

CARS-SUV'S-CROSSOVERS

  • Front under center console
  • Under trunk floor
  •  Passenger side of trunk behind wheel-well
  • Driver side rear quarter panel

--------------------------------

PICK-UPS

  • Behind rear seat mounted on back wall

LLJ Elite System Installation Manual

Color Code Card & Bass Roll-off info

Notes:

  • Some Bose amps have a GRAY connector instead of a BLACK connector. This harness will still work with your gray connector. It will have an offset tab, we will cut one of the tabs on our harness to fit your vehicle. If your harness has both side tabs please note the LEFT tab needs to be trimmed. 
  • Some Vehicles don't have a BOSE tuned amplifier but DO have a factory amplifier that use this same harness.
  • Harness ordered with an LOC/Processor includes a remote turn on cable. 
  • Chimes will not be affected.

T-harness Accessories

All Elite T-harnesses See All
All Elite T-harnesses See All

Elite 2ch T-Harness Accessory

LLJ Customs Car Audio Fabrication
$30.50 USD - $92.00 USD
$30.50 USD - $92.00 USD
$30.50 USD - $92.00 USD
$30.50 USD
In stock

The Elite 2 Channel T-Harness Accessory is the option needed when installing a mono amp and subs. This will offer signal, power and ground to the L...

View full details

Elite 4ch T-Harness Accessory Options

LLJ Customs Car Audio Fabrication
$45.00 USD - $45.00 USD
$45.00 USD
$45.00 USD - $45.00 USD
$45.00 USD
In stock

The Elite 4 Channel T-Harness Accessory is the option needed when installing a mono amp and subs. This will offer signal, power and ground to the L...

View full details
Sold out

Kicker 47KEYLOC Smart Line Output Converter Elite 2ch T-Harness Accessory

LLJ Customs Car Audio Fabrication
$195.00 USD - $195.00 USD
$195.00 USD
$195.00 USD - $195.00 USD
$195.00 USD
Out of stock

The Kicker 47KEYLOC Elite 2 Channel T-Harness is a one of a kind design ideal for installing Subwoofers to your aftermarket truck or car's factory ...

View full details
View ALL Elite T-harnesses

6-8ch Loopback Harness

All Elite loopback harnesses See All
All Elite loopback harnesses See All

Elite Bose Factory Amplifier Loopback Harness Accessory

LLJ Customs Car Audio Fabrication
$180.00 USD - $280.00 USD
$180.00 USD - $280.00 USD
$180.00 USD - $280.00 USD
$180.00 USD
Low stock

The Elite 6ch Bose Loopback Harness Accessory was specifically designed to work and plug into the factory amplifier, making the process of installi...

View full details

Elite Bose amplifier Loopback Harness Accessory (No unit)

LLJ Customs Car Audio Fabrication
$175.00 USD - $270.00 USD
$175.00 USD - $270.00 USD
$175.00 USD - $270.00 USD
$175.00 USD
In stock

The Elite 6ch Bose Loopback Harness Accessory was specifically designed to work and plug into the factory amplifier, making the process of installi...

View full details
View All Elite loopback Harnesses

Factory amplified S.I.K systems

All Elite S.I.K systems See All
All Elite S.I.K systems See All
Sold out

KICKER KEY GX200.4Pluse Elite S.I.K Audio Harness Kit

LLJ Customs Car Audio Fabrication
$520.00 USD - $520.00 USD
$520.00 USD
$520.00 USD - $520.00 USD
$520.00 USD
Out of stock

At LLJ Customs we aim to make out T-Harness and Loopback Harness as multi-purpose as possible. That is why we invented the Elite Harness System. T...

View full details
kicker key amplifier harness ,kicker key amp, ford,ram

Kicker KEY 200.4 Audio Harness F.A.S.T 5ft

LLJ Customs Car Audio Fabrication
$155.00 USD - $175.00 USD
$155.00 USD - $175.00 USD
$155.00 USD - $175.00 USD
$155.00 USD
In stock

Our KICKER KEY Harness matched with the revolutionary smart DSP and amplifier will deliver a quick, professional-quality car audio upgrade for your...

View full details
Sold out

S.I.K: FS1000 2014-2019 GM | GMC Crew Cab

LLJ Customs Car Audio Fabrication
$550.00 USD - $550.00 USD
$550.00 USD
$550.00 USD - $550.00 USD
$550.00 USD
Out of stock

Our S.I.K: F1000 units aim at simplifying the installation of a full system in your 2014-2018 GM/GMC truck. Our S.I.K systems are all fully p...

View full details
View all S.I.K systems

Overall rating: 4.9411764 / 5 from 68 reviews.

AI Generated Review Summary

Summary topics

Review topics: [].

Review highlights

Reviews

Perfect

"Thank you for a quality product! Before I researched putting in an amp and two 12' subs. I took my truck to a authorized Kicker dealer and told them what I wanted. The dealer absolutely hacked my system! It sounded like total shit. They told me it is what it is... Low and behold by the random chance I found a LLJ video about installing an amp and sub with the T harness...I've worked in the elevator trade for 30 yrs and I have extensive knowledge of control wiring. I was absolutely shocked they did such a horrible installation. Thank you for your product after a year of trying to correct the problem and it took very little time!!"

— Lee F. (5/5)

Quality harnesses and LOC

"Quality harnesses and LOC"

— Spencer H. (5/5)

Awesome and Easy!

"The harness and LCI2 line out converter worked perfectly for my 2017 Malibu Premier. I had a single sub add setup. The only thing that was required that wasn't mentioned was the factory plug into the BOSE amp needs one of the tabs cut off to connect up to the plug used on the LLJ T-harness."

— Seth B. (5/5)

Great harness love it.

"Great harness love it."

— Elmer (5/5)

ATX

"Hooked it up when I got it just to make sure it works. Ran it for a month on a sundown 1000w.amp, rms 1400 with a 15-in woofer and it beat the block up. Setting car alarms off, exactly what I wanted. Good looking out Llj customs."

— Tisha G. (5/5)

High quality

"High quality"

— Joel C. (5/5)

Great custom made harness!

"Worked just as advertised!! Had my own box, sub, and amp so ordered this harness. Just plugged it into the Bose factory amp and instantly had the additional bass I was missing!"

— Bryon B. (5/5)

Perfect fit

"Dont delay order yours today"

— James B. (5/5)

LOC T-Harness

"This is the greatest thing since 4 wheel drive. This was the easiest setup I have done in years. I ran power wire, ground and connected the T-Harness all in about a hour and didn’t void anything on my extended warranty!!!!! Love it... 45 year old bass head"

— Carlton E. (5/5)

Hassle free installation!

"Product is as described, plug-in-play with no alterations to my factory wiring necessary."

— Carlos M. (5/5)

Q&A