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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

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!

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Elite 4ch T-Harness Accessory Options

LLJ Customs Car Audio Fabrication
Original price $45.00 USD - Original price $45.00 USD
Original price
$45.00 USD
$45.00 USD - $45.00 USD
Current price $45.00 USD
Low 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...

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Custom RCA Cables Shock-Wire©

Shock-Wire
Original price $30.00 USD - Original price $30.00 USD
Original price
$30.00 USD
$30.00 USD - $30.00 USD
Current price $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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51608 Tesa 15mm x 25m Cable Adhesive Cloth Fabric Wiring Loom Harness Tape

LLJ Customs Car Audio Fabrication
Original price $5.20 USD
Original price $5.20 USD - Original price $5.20 USD
Original price $5.20 USD
Current price $3.25 USD
$3.25 USD - $3.25 USD
Current price $3.25 USD
Out of stock

Our 51608 Tesa tape rolls are always in stock and have the best pricing. The more you buy the better the discount.  Full Roll  Length 25 m Width ...

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5th gen Jeep | RAM Radio T-harness 2022-2025 R2R

LLJ Customs Car Audio Fabrication
Original price $255.00 USD
Original price $255.00 USD - Original price $255.00 USD
Original price $255.00 USD
Current price $205.00 USD
$205.00 USD - $205.00 USD
Current price $205.00 USD
In stock

Add a subwoofer to your Ram/Jeep Uconnect5 with our R2R T-harness is the most reliable and beneficial solution. Our plug and play Ram T-harnesses ...

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Silverado pickup amp rack with Bose 2014-2019 48"

LLJ Customs Car Audio Fabrication
Original price $150.00 USD - Original price $160.00 USD
Original price
$150.00 USD - $160.00 USD
$150.00 USD - $160.00 USD
Current price $150.00 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 plac...

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Automotive Amp Rack 2019-2022 Silverado Sierra rear under seat

LLJ Customs Car Audio Fabrication
Original price $80.00 USD - Original price $80.00 USD
Original price
$80.00 USD
$80.00 USD - $80.00 USD
Current price $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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GMC Sierra Amp Rack pickup 28" 2019-2025

LLJ Customs Car Audio Fabrication
Original price $65.00 USD - Original price $75.00 USD
Original price
$65.00 USD - $75.00 USD
$65.00 USD - $75.00 USD
Current price $65.00 USD
In stock

Our GMC pickup amp racks are the best solution for properly and easily securing your aftermarket equipment to you vehicle. Our amp racks are d...

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MINI Under-hood Fuse holder mounts©

LLJ Customs Car Audio Fabrication
Original price $10.00 USD - Original price $10.00 USD
Original price
$10.00 USD
$10.00 USD - $10.00 USD
Current price $10.00 USD
In stock

Our ABS ANL under-hood fuse mounts are universal in design and will come with a few guides to help you keep your fuse holder straight. The ABS unde...

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FORD B&O Sync3-4 Elite harness base connector 2018-2025

LLJ Customs Car Audio Fabrication
Original price $60.00 USD - Original price $60.00 USD
Original price
$60.00 USD
$60.00 USD - $60.00 USD
Current price $60.00 USD
In stock

The Elite Ford B&O Base Connector is compatible with a range of Ford vehicles including the F250,F350, Mustang, Explorer, and more with the ...

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Double ANL Under-hood Fuse holder mounts©

LLJ Customs Car Audio Fabrication
Original price $23.00 USD - Original price $23.00 USD
Original price
$23.00 USD
$23.00 USD - $23.00 USD
Current price $23.00 USD
Out of stock

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

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1ft 2ch Shock-Wire© Audiophile RCA Cable

Shock-Wire
Original price $20.00 USD - Original price $20.00 USD
Original price
$20.00 USD
$20.00 USD - $20.00 USD
Current price $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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Lincoln/FORD ANC Bypass harness 2020-Up

LLJ Customs Car Audio Fabrication
Original price $15.00 USD
Original price $15.00 USD - Original price $15.00 USD
Original price $15.00 USD
Current price $10.00 USD
$10.00 USD - $10.00 USD
Current price $10.00 USD
In stock

Our Ford ANC bypass Harness is the first of its kind and is the ideal solution for disabling the factory Ford/Lincoln ANC system allowing you to ad...

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Bose Wirenator OEM Amp Bypass with 20ft Lead - for 2019-2025

LLJ Customs Car Audio Fabrication
Original price $85.00 USD - Original price $85.00 USD
Original price
$85.00 USD
$85.00 USD - $85.00 USD
Current price $85.00 USD
Out of stock

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

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8" LLJ Pair Runner

LLJ Customs Car Audio Fabrication
Original price $40.98 USD - Original price $40.98 USD
Original price
$40.98 USD
$40.98 USD - $40.98 USD
Current price $40.98 USD
Out of stock

Crafted from 1/4 inch aluminum, a tool made for a true artist. Our design sets the bar for versatility and durability when it comes to wire managem...

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17.5" LLJ Pair Runner

LLJ Customs Car Audio Fabrication
Original price $75.00 USD - Original price $75.00 USD
Original price
$75.00 USD
$75.00 USD - $75.00 USD
Current price $75.00 USD
Low stock

Crafted from 1/4 inch aluminum, a tool made for a true artist. Our design sets the bar for versatility and durability when it comes to wire managem...

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90° LLJ Pair Runner

LLJ Customs Car Audio Fabrication
Original price $25.98 USD - Original price $25.98 USD
Original price
$25.98 USD
$25.98 USD - $25.98 USD
Current price $25.98 USD
Out of stock

Crafted from 1/4 inch aluminum, a tool made for a true artist. Our design sets the bar for versatility and durability when it comes to wire manage...

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Chrysler | Dodge | Ram | Jeep Factory PRE AMP Audio harness for 2015-2024

LLJ Customs Car Audio Fabrication
Original price $75.00 USD - Original price $75.00 USD
Original price
$75.00 USD
$75.00 USD - $75.00 USD
Current price $75.00 USD
In stock

This audio harness is designed to work with the Alpine, Harmon Kardon factory amplified system. It will bypass the ANC and will only work with ve...

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GMC Sierra Amp Rack pickup 10.5" 2019-2024

LLJ Customs Car Audio Fabrication
Original price $35.00 USD - Original price $45.00 USD
Original price
$35.00 USD - $45.00 USD
$35.00 USD - $45.00 USD
Current price $35.00 USD
Low stock

The Sierra pickup amp racks are the best solution for properly and easily securing your aftermarket equipment to you vehicle. Our amp racks are ...

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GMC Sierra Amp Rack pickup back wall 56" 2019-2024

LLJ Customs Car Audio Fabrication
Original price $100.00 USD - Original price $110.00 USD
Original price
$100.00 USD - $110.00 USD
$100.00 USD - $110.00 USD
Current price $100.00 USD
Out of stock

A pickup truck amp racks is the best solution for properly and easily securing your aftermarket equipment to you vehicle. Our amp racks are de...

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Wāvtech LinkRC

Wavtech
Original price $27.95 USD - Original price $27.95 USD
Original price
$27.95 USD
$27.95 USD - $27.95 USD
Current price $27.95 USD
In stock

Remote Level Control The linkRC is the add-on remote level control (RLC) for the linkDQ. It is also a replacement for some legacy models (see belo...

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4 Awg Wire Ferrule 22mm

LLJ Customs Car Audio Fabrication
Original price $0.45 USD - Original price $0.45 USD
Original price
$0.45 USD
$0.45 USD - $0.45 USD
Current price $0.45 USD
Out of stock

A Wire Ferrule is a connector used to terminate stranded wires (sometimes referred to as a cord end terminal or bootlace ferrule). Traditionally a ...

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Universal Under-hood Fuse holder mounts©

LLJ Customs Car Audio Fabrication
Original price $25.00 USD - Original price $25.00 USD
Original price
$25.00 USD
$25.00 USD - $25.00 USD
Current price $25.00 USD
In stock

Our ABS ANL under-hood fuse mounts are universal in design and will come with a few guides to help you keep your fuse holder straight. The ABS unde...

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Uconnect5 RAM JEEP Elite harness base connector 2022-2025

LLJ Customs Car Audio Fabrication
Original price $60.00 USD - Original price $60.00 USD
Original price
$60.00 USD
$60.00 USD - $60.00 USD
Current price $60.00 USD
In stock

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

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

LLJ Customs Car Audio Fabrication
Original price $520.00 USD - Original price $520.00 USD
Original price
$520.00 USD
$520.00 USD - $520.00 USD
Current price $520.00 USD
In 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...

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Industry leaders or thieves?

Stolen designs

For years people like CAF and 5STAR said you HAD to pull new speaker wire, then we showed up and now they say loops are the way. Don't trust people who copy others and try to take credit.

The year was 2018

Before the solutions were even needed we had them. It wasn't until 2022 that PAC Audio and Metra would have to backstep and steal our design to stay in the game.

The SCAM that is PAC Audio

The amp-pro was PACs first try to steal our ideas. It failed so bad they had to steal our ANC bypasses to make the amp-pro (2019) work better. (pic taken 2017)

12v Knowledge block

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

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

Automotive Amp Racks

We created the Automotive Amp Rack

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.