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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

Our products are NOT sold at any AUDIO SHOPS or online retailers, however knock off copies are, be aware dont pay more for less. Stay authentic 👽... Instock product ship the following business day!

Base connector | Harness Accessory| AMP,DSP,LOC

GM/GMC/Cadillac Black & Gray (Without Bose amp) Base Connector 2019-2025

GM/GMC/Cadillac Black & Gray (Without Bose amp) Base Connector 2019-2025

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:
in stock, ready to be shipped

CADILLAC

  • CADILLAC | 2019-2020 | CT6V | Without Bose, AKG
  • CADILLAC | 2019-2025 | XT5 | Without Bose, AKG
  • CADILLAC | 2019-2025 | XT4 | Without Bose, AKG
  • CADILLAC | 2020-2025 | CT5V | Without Bose, AKG
  • CADILLAC | 2019-2025 | CT5 | Without Bose, AKG
  • CADILLAC | 2019-2025 | CT4V | Without Bose, AKG
  • CADILLAC | 2019-2026 | CT4 |Without Bose, AKG
  • CADILLAC | 2023-2025 | LYRIQ | Without Bose, AKG
  • CADILLAC | 2019-2025 | ESCALADE | Without Bose, AKG

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

CHEVROLET

  • CHEVROLET | 2019-2024 | CAMARO | Without Bose
  • CHEVROLET | 2019-2025 | COLORADO | Without Bose
  • CHEVROLET | 2019-2025 | CORVETTE | Without Bose
  • CHEVROLET | 2019-2024 | CRUZE | Without Bose
  • CHEVROLET | 2018-2025 | EQUINOX | Without Bose
  • CHEVROLET | 2023-2025 | EQUINOX EV | Without Bose
  • CHEVROLET | 2018-2025 | TRAILBLAZER | Without Bose
  • CHEVROLET | 2019-2020 | IMPALA | Without Bose
  • CHEVROLET | 2018-2022 | BLAZER | Without Bose
  • CHEVROLET | 2023-2025 | BLAZER EV| Without Bose
  • CHEVROLET | 2019-2023 | MALIBU | Without Bose
  • CHEVROLET | 2019-2025 | SILVERADO | Without Bose
  • CHEVROLET | 2018-2021 | CAPTIVA | Without Bose
  • CHEVROLET | 2019-2025 | SILVERADO HD | Without Bose
  • CHEVROLET | 2019-2025 | SUBURBAN | Without Bose
  • CHEVROLET | 2019-2025 | TAHOE | Without Bose
  • CHEVROLET | 2018-2025 | TRAVERSE | Without Bose
  • CHEVROLET | 2019-2023 | VOLT | Without Bose

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

GMC

  • GMC | 2018-2025 | ACADIA | Without Bose
  • GMC | 2019-2022 | CANYON | Without Bose
  • GMC | 2019-2025 | SIERRA | Without Bose
  • GMC | 2019-2025 | SIERRA HD | Without Bose
  • GMC | 2018-2025 | TERRAIN | Without Bose
  • GMC | 2019-2025 | YUKON | Without Bose
  • GMC | 2019-2025 | YUKON XL | Without Bose

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

BUICK

  • BUICK | 2019-2025 | ENCLAVE | Without Bose or factory
    amplifier
  • BUICK | 2019-2022 | ENCORE | Without Bose or factory amplifier
  • BUICK | 2020-2024 | ENCORE GX | Without Bose or factory
    amplifier
  • BUICK | 2018-2024 | REGAL SPORTBACK | Without Bose or factory
    amplifier
  • BUICK | 2018-2024 | REGAL TOURX | Without Bose or factory
    amplifier
  • BUICK | 2019-2025 | ENVISION | Without Bose or factory
    amplifier
  • BUICK | 2019-2025 | ENVISTA | Without Bose or
    factory amplifier

At factory HMI

CARS | SUV'S | CROSSOVERS | PICK-UPS

  • 2018-2019 Colorado, Canyon can be behind radio screen
  • All others the HMI is behind the glovebox, access is from underneath.

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

LLJ Elite System Installation Manual

Color Code Card & Bass Roll-off info

Notes:

  • You MUST verify connector Colors before purchase some will have the Black/gray and some will be Aqua/Tan. Vehicles with none Bose amp may still have a factory amplifier. Please reach out if you have any questions.  
  • Some vehicles have ANC without the Bose (Crossovers mostly) this is a 3 harness silver box normally under the center console. -ANC bypass GMBB2
  • Harness ordered with an LOC/Processor includes a remote turn on cable. 
  • Chimes will not be affected.

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

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Overall rating: 4.8 / 5 from 10 reviews.

AI Generated Review Summary

Summary topics

Review topics: [].

Review highlights

Reviews

Loopback harness

"Have bought from LLJ for years always a top notch product. Had a little mixup this year but was handed promptly. Will always recommend them."

— MIKE P. (5/5)

Haven’t got all my components

"Haven’t got all my components rounded up for the install but the harness looks great!"

— Ronald M. (5/5)

Nicely done!

"Quality is awesome! Definitely would recommend."

— Brian V. (5/5)

Meh

"It works okay. I lost my turn signal noise and seatbelt chimes. It also seems to pair the tweeters and the front door speakers. It would be nice to have those separated. Receiving the item took about 4 weeks even though when I ordered it, it showed in stock. Anytime I emailed with a question, I never received a response. If I were to do it again, I think I'd try somewhere else."

— Jesse H. (3/5)

The good and bad

"The good news: it works exactly as advertised. The bad news: takes months to get the item."

— David E. (5/5)

Love it and ezy to

"Love it and ezy to install"

— Reynaldo V. (5/5)

Awesome product

"Awesome product"

— jerry v. (5/5)

Perfect

"Perfect"

— Steve c. (5/5)

Works Great and makes upgrading

"Works Great and makes upgrading the factory a breeze!!"

— Michael R. (5/5)

Loop back harness is high

"Loop back harness is high quality, fit perfectly and does exactly what it is designed for in my 2021 Chevy HD"

— William M. (5/5)

Q&A