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GM/GMC Bose amplifier harness Base connector 2014-2019

LLJ Customs Car Audio Fabrication

$60.00 USD - $60.00 USD

$60.00 USD

$60.00 USD - $60.00 USD

$60.00 USD

Out of stock

Our Bose amplifier harness is designed to work with a variety of GM/Cadillac vehicles from a Silverado, Escalade, Sierra and any GM vehicle with...

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2014-2018 GM/GMC vehicles with 8" or select 4" screen's (Without Bose) Base Connector

LLJ Customs Car Audio Fabrication

$60.00 USD - $60.00 USD

$60.00 USD

$60.00 USD - $60.00 USD

$60.00 USD

In stock

Our 8" screen GM/GMC harness is designed to work with a variety of vehicles from a Silverado, Sierra, Suburban and any other GM vehicles that use ...

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GM/GMC Bose amplifier harness base Connector 2019-2025

LLJ Customs Car Audio Fabrication

$60.00 USD - $60.00 USD

$60.00 USD

$60.00 USD - $60.00 USD

$60.00 USD

Out of stock

The Bose amplifier harness is designed to work with a variety of GM/Cadillac/GMC and Buick vehicles from a Silverado, Escalade, Sierra and any G...

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GM/GMC/Cadillac Aqua & Tan (Without Bose amp) Base Connector 2019-2025

LLJ Customs Car Audio Fabrication

$60.00 USD - $60.00 USD

$60.00 USD

$60.00 USD - $60.00 USD

$60.00 USD

In stock

Our 2019-2025 GM/GMC/Cadillac Aqua & Tan Elite Harness has been tested, redesigned and modified to what it is now by our team at LLJ Customs....

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

LLJ Customs Car Audio Fabrication

$60.00 USD - $60.00 USD

$60.00 USD

$60.00 USD - $60.00 USD

$60.00 USD

In stock

Our 2019-2022 GM/GMC Black & Gary connector Elite Harness has been tested, redesigned and modified to what it is now by our team at LLJ Customs...

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Uconnect4 RAM JEEP Elite harness base connector 2013-2022

LLJ Customs Car Audio Fabrication

$60.00 USD - $60.00 USD

$60.00 USD

$60.00 USD - $60.00 USD

$60.00 USD

In stock

Our versatile RAM JEEP Uconnect4 Elite Base Connector is compatible with a range of RAM JEEP vehicles including the RAM pickup, wrangler sport, Ra...

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Elite 4ch OEM Loopback Harness Accessory

LLJ Customs Car Audio Fabrication

$255.00 USD - $340.00 USD

$255.00 USD

Low stock

Introducing our Elite Loopback Harness Accessory: The Seamless Solution for Adding a 4+ Channel Amp to Your Speaker System! Are you looking to upgr...

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FORD Sync 4 Elite harness base connector 2019-2025

LLJ Customs Car Audio Fabrication

$60.00 USD - $60.00 USD

$60.00 USD

$60.00 USD - $60.00 USD

$60.00 USD

In stock

Our versatile Ford Elite Base Connector is compatible with a range of Ford vehicles including the F250,F350, Mustang, Explorer, and more without...

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Chevy/GMC 8 inch speaker door adapter 2014-2024

LLJ Customs Car Audio Fabrication

$65.00 USD - $65.00 USD

$65.00 USD

$65.00 USD - $65.00 USD

$65.00 USD

In stock

GM/GMC 8" inch speaker adapter is a perfect factory replacement. This will allow you to upgrade from the factory 6x9 speaker to an aftermarket sub...

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Elite Bose Factory Amplifier Loopback Harness Accessory

LLJ Customs Car Audio Fabrication

$180.00 USD - $280.00 USD

$180.00 USD

Out of stock

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

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Silverado pickup amp rack 2014-2019 18"

LLJ Customs Car Audio Fabrication

$60.00 USD - $70.00 USD

$60.00 USD

In stock

The Silverado/Sierra Pick-up amp racks are not just the first of their kind ,they are also the best. Our amp racks are designed to fit into place,...

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ANC bypass harness GMC vehicles W/ UQS,UQP,UQA,UQF RPO Code 2021-Up

LLJ Customs Car Audio Fabrication

$15.00 USD - $15.00 USD

$15.00 USD

$15.00 USD - $15.00 USD

$15.00 USD

In stock

This GMC Buick ANC bypass harness was designed for vehicles that have the factory Bose amplifier and an RPO code of UQA,UQF,UQS,UQP. This chevy AN...

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Chevy work/custom/elevation trim vehicles with 4" or 7" Screen Elite harness base connector

LLJ Customs Car Audio Fabrication

$60.00 USD

$60.00 USD - $60.00 USD

$60.00 USD

$55.00 USD

$55.00 USD - $55.00 USD

$55.00 USD

Out of stock

Our 7" Chevy harness is designed to work with GM/GMC vehicles like a Traverse with a 7" screen or a Silverado with the Work Truck, Elevation or C...

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Bose Wirenator OEM Amp Bypass with 20ft Lead - for 2013-2019

LLJ Customs Car Audio Fabrication

$85.00 USD - $85.00 USD

$85.00 USD

$85.00 USD - $85.00 USD

$85.00 USD

Out of stock

Our GM Bose Wirenator OEM Amp bypass harness lets you keep using the factory wires already running to your speakers, with an after market amp or h...

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Wāvtech Link2

Wavtech

$79.95 USD - $79.95 USD

$79.95 USD

$79.95 USD - $79.95 USD

$79.95 USD

In stock

If you need a high-quality 2-channel LOC, but don’t require additional features like summing or auxiliary inputs, the link2 is the perfect solution...

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GM/GMC T-harness with 8" or select 4" screen's (Without Bose) R2R 2014-2018

LLJ Customs Car Audio Fabrication

$255.00 USD

$255.00 USD - $255.00 USD

$255.00 USD

$205.00 USD

$205.00 USD - $205.00 USD

$205.00 USD

In stock

The Chevy/GMC R2G T-Harness allows you to add any aftermarket subwoofer to the Chevy/GMC system in minutes. Using the Chevy/GMC T-Harness with an...

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Silverado pickup amp rack 2014-2019 28"

LLJ Customs Car Audio Fabrication

$110.00 USD - $125.00 USD

$110.00 USD

In stock

Our Silverado/Sierra Pick-up amp racks are not just the first of their kind ,they are also the best. Our amp racks are designed to fit into place,...

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Sync4 Ford ANC bypass harness 2020-up models

LLJ Customs Car Audio Fabrication

$15.00 USD

$15.00 USD - $15.00 USD

$15.00 USD

$9.75 USD

$9.75 USD - $9.75 USD

$9.75 USD

In stock

Our Ford Sync4 32 pin ANC bypass connectors will plug in between the the gray factory connector and the ford factory radio unit. Disabling the inpu...

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2014-2023 LLJ General Motors pickup factory Speaker Upgrade Kit©

LLJ Customs Car Audio Fabrication

$195.00 USD - $195.00 USD

$195.00 USD

$195.00 USD - $195.00 USD

$195.00 USD

Low stock

Fitment Guide: Chevrolet Equinox 2015-2019 (2012-2015 with Pioneer system) Impala 2014-2021 Malibu 2016-2021 Suburban 2015-2021 Silverado 2014-2...

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Single ANL Under-hood Fuse holder mounts© Shock-Wire

LLJ Customs Car Audio Fabrication

$20.00 USD - $20.00 USD

$20.00 USD

$20.00 USD - $20.00 USD

$20.00 USD

In stock

Our ABS ANL Fuse Mounts are available with and without the T-Spec Fuse holders and come with hardware. If you choose no fuse holder so you can moun...

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Cadillac Bose ANC bypass harness with 12+ speakers w/ RPO UQG 2021-Up

LLJ Customs Car Audio Fabrication

$15.00 USD - $15.00 USD

$15.00 USD

$15.00 USD - $15.00 USD

$15.00 USD

Out of stock

Cadillac Bose ANC bypass harness is a must have in any Cadillac vehicle with Bose. The Cadillac ANC bypass harness will need to be installed at the...

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Silverado pickup amp rack 2014-2019 37"

LLJ Customs Car Audio Fabrication

$135.00 USD - $145.00 USD

$135.00 USD

Low stock

The Silverado/Sierra Pick-up amp racks are not just the first of their kind ,they are also the best. Our amp racks are designed to fit into place,...

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GM/GMC Work/Custom/Elevation trim Vehicles with 4" or 7" Screen 2014-2019 R2R

LLJ Customs Car Audio Fabrication

$255.00 USD

$255.00 USD - $255.00 USD

$255.00 USD

$205.00 USD

$205.00 USD - $205.00 USD

$205.00 USD

Out of stock

The Chevy work/elevation trim R2R T-Harness allows you to add any aftermarket subwoofer to the Chevy work/elevation trim system in minutes. Usi...

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Elite 4ch OEM Loopback Harness Accessory NO unit

LLJ Customs Car Audio Fabrication

$210.00 USD - $285.00 USD

$210.00 USD

Low stock

Introducing our Elite Loopback Harness Accessory: The Seamless Solution for Adding a 4/6/8+ Channel Amp to Your Speaker System! Are you looking to ...

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12v Knowledge block

What Is "High Level" or "Low level" ?

High level: AKA Speaker level is an amp that can handle an input voltage of 8-40v. This high output is common in factory amplified vehicles or where the
max voltage of a head unit is more than 10v. This is normally identified by a pigtail connection point or via the RCA on the amplifier (must check user manual to verify). Some amps have a switch for this. NOT all amps have this feature.

Low Level: is 0-8v of signal voltage. This is most commonly found in aftermarket head units or other aftermarket units that use can-bus. Most passive LOC units output 0-5v, so they are considered a low level and are normally RCA to RCA. Modern day ACTIVE LOC units can output 0-10v of signal.

In conclusion an LOC works as an in-line filter that lets you control the signal, its intensity and in some cases the playable frequency range.

If your amp takes a high level and it is within the vehicles factory output range then you don't need an loc unit and can wire in and out of your amp directly. In some Fords the signal can be flattened at the OBD2, further simplifying the installation.

Wavtech Units

The best in hand Made RCA's & Power kits

Custom RCA Cables Shock-Wire©

Shock-Wire

$30.00 USD - $30.00 USD

$30.00 USD

$30.00 USD - $30.00 USD

$30.00 USD

In stock

When it comes to RCA cables there is a plenty of fish in the sea but some fish just taste better than others and that is the case here. Our In-hous...

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1ft 2ch Shock-Wire© Audiophile RCA Cable

Shock-Wire

$20.00 USD - $20.00 USD

$20.00 USD

$20.00 USD - $20.00 USD

$20.00 USD

Out of stock

When it comes to RCA cables there is a plenty of fish in the sea but some fish just taste better than others and that is the case here. Our In-hous...

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3ft 2ch Shock-Wire© Audiophile RCA Cable

Shock-Wire

$41.00 USD - $41.00 USD

$41.00 USD

$41.00 USD - $41.00 USD

$41.00 USD

In stock

When it comes to RCA cables there is a plenty of fish in the sea but some fish just taste better than others and that is the case here. Our In-hous...

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12ft 2ch Shock-Wire© Audiophile RCA Cable

Shock-Wire

$75.00 USD - $75.00 USD

$75.00 USD

$75.00 USD - $75.00 USD

$75.00 USD

In stock

When it comes to RCA cables there is a plenty of fish in the sea but some fish just taste better than others and that is the case here. Our In-hous...

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Shock-Wire

$55.00 USD - $55.00 USD

$55.00 USD

$55.00 USD - $55.00 USD

$55.00 USD

In stock

When it comes to RCA cables there is a plenty of fish in the sea but some fish just taste better than others and that is the case here. Our In-hous...

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Thunder wire 1/0 AWG 22' Power Kit

Shock-Wire

$265.00 USD - $265.00 USD

$265.00 USD

$265.00 USD - $265.00 USD

$265.00 USD

Out of stock

Made in the, USA -100% OFC large strand copper - K-type build to spec safe a 10,000 amps - Kits come in 22' foot length -Hydraulic crimped -Thi...

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Shock-Wire

$115.00 USD - $115.00 USD

$115.00 USD

$115.00 USD - $115.00 USD

$115.00 USD

In stock

When it comes to RCA cables there is a plenty of fish in the sea but some fish just taste better than others and that is the case here. Our In-hous...

View full details

Shock-Wire

$89.00 USD - $89.00 USD

$89.00 USD

$89.00 USD - $89.00 USD

$89.00 USD

In stock

When it comes to RCA cables there is a plenty of fish in the sea but some fish just taste better than others and that is the case here. Our In-hous...

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Thunder Wire 1/0 AWG Per Foot- Transparent

Shock-Wire

$6.50 USD - $6.50 USD

$6.50 USD

$6.50 USD - $6.50 USD

$6.50 USD

In stock

Sold by the foot ! Made in the, USA -100% OFC large strand copper - K-type build to spec Safe at 10,000 amps - Wire will be cut to the total lengt...

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Shop collection

Automotive Amp Racks

We created the Automotive Amp Rack

to give customers a secure place to mount their equipment without damaging their vehicles and having the ability to build and test everything outside of the vehicle. Choosing durable materials like ABS, HDPE, Acrylic and always using factory bolts was our mission.

This product has now turned into an upsell by shops and copy-cats like 5star and car audio fabrications on YouTube to be sold as some type of beauty product. Shops are using cheap materials like expanded PVC board and charging customers a premium price for doing something they should have been doing all along. Your choices are get robbed, or screw holes and water leaks.

They do not represent what our products are and we don't appreciate the theft of our products and ideas being used to steal from customers.

Automotive Amp Racks

Silverado pickup amp rack 2014-2019 18"

LLJ Customs Car Audio Fabrication

$60.00 USD - $70.00 USD

$60.00 USD

In stock

The Silverado/Sierra Pick-up amp racks are not just the first of their kind ,they are also the best. Our amp racks are designed to fit into place,...

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Silverado pickup amp rack 2014-2019 28"

LLJ Customs Car Audio Fabrication

$110.00 USD - $125.00 USD

$110.00 USD

In stock

Our Silverado/Sierra Pick-up amp racks are not just the first of their kind ,they are also the best. Our amp racks are designed to fit into place,...

View full details

Silverado pickup amp rack 2014-2019 37"

LLJ Customs Car Audio Fabrication

$135.00 USD - $145.00 USD

$135.00 USD

Low stock

The Silverado/Sierra Pick-up amp racks are not just the first of their kind ,they are also the best. Our amp racks are designed to fit into place,...

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Silverado pickup amp rack 2014-2019 48"

LLJ Customs Car Audio Fabrication

$150.00 USD - $160.00 USD

$150.00 USD

In stock

Our Pick-up truck amp racks are not just the first of their kind ,they are also the best. Our amp racks are designed to fit into place, mounting o...

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Automotive Amp Rack 2019-2022 Silverado Sierra rear under seat

LLJ Customs Car Audio Fabrication

$80.00 USD - $80.00 USD

$80.00 USD

$80.00 USD - $80.00 USD

$80.00 USD

In stock

This amp rack is mounted under the rear driver side below the rear seat. It uses the lowering jack equipment holder bolt. This custom cut amp rack ...

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