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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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TESLA Door speaker Harness adapter 2017-25

Shock-Wire
Original price $3.75 USD - Original price $14.75 USD
Original price
$3.75 USD - $14.75 USD
$3.75 USD - $14.75 USD
Current price $3.75 USD
In stock

Inspired by the 72-8603 adapter harness, our tesla speaker adapter harness makes installing aftermarket dash speakers easy at an appropriate price....

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Ford Amp Rack F-series Pickups 55" Full wall 2015-2023

LLJ Customs Car Audio Fabrication
Original price $165.00 USD - Original price $165.00 USD
Original price
$165.00 USD
$165.00 USD - $165.00 USD
Current price $165.00 USD
Out of stock

Our Ford amplifier racks are designed to mount into place using the factory bolts, This method of securing the ford amp rack to the back wall wi...

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Wāvtech Link500.1mini

Wavtech
Original price $299.95 USD - Original price $299.95 USD
Original price
$299.95 USD
$299.95 USD - $299.95 USD
Current price $299.95 USD
In stock

The link500.1mini amplifier was engineered from the ground up to be the best possible option for adding bass to any system. The speaker level input...

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Jeep Mcintosh ANC bypass harness 2022-2025

LLJ Customs Car Audio Fabrication
Original price $7.00 USD - Original price $7.00 USD
Original price
$7.00 USD
$7.00 USD - $7.00 USD
Current price $7.00 USD
In stock

Jeep's Mcintosh amplified factory audio system includes Active Noise Cancelation, or ANC. The ANC designed to pick up on low frequency road noise ...

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Elite AROA© Harness

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

Adding an aftermarket radio to your factory system that was previously upgraded with our Elite Loopback Harness, is an absolute breeze withe the El...

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8" LLJ ABS Pair Runner Amp Rack wire guide

LLJ Customs Car Audio Fabrication
Original price $15.00 USD - Original price $15.00 USD
Original price
$15.00 USD
$15.00 USD - $15.00 USD
Current price $15.00 USD
Out of stock

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

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19" LLJ ABS Pair Runner amp rack hole guide

LLJ Customs Car Audio Fabrication
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

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

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Wāvtech link1000.5plus

Wavtech
Original price $630.95 USD - Original price $630.95 USD
Original price
$630.95 USD
$630.95 USD - $630.95 USD
Current price $630.95 USD
Low stock

link1000.5plus Features 1000 Watt 5-Channel Amplifier Main Channels 75 watts x 4 @ 4 ohms 125 watts x 4 @ 2 ohms 250 watts x 2 @ 4 ohms...

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Wāvtech Link700.4Plus

Wavtech
Original price $595.95 USD - Original price $595.95 USD
Original price
$595.95 USD
$595.95 USD - $595.95 USD
Current price $595.95 USD
Low stock

link700.4plus Features 700 Watt 4-Channel Amplifier 100 watts x 4 @ 4 ohms 175 watts x 4 @ 2 ohms 350 watts x 2 @ 4 ohms BTL Small Foot...

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Wāvtech Link500.4mini

Wavtech
Original price $429.95 USD - Original price $429.95 USD
Original price
$429.95 USD
$429.95 USD - $429.95 USD
Current price $429.95 USD
In stock

link500.4mini Features 500 Watt 4-Channel Amplifier 75 watts x 4 @ 4 ohms 125 watts x 4 @ 2 ohms 250 watts x 2 @ 4 ohms BTL Small Footpri...

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Ram/jeep dash tweeter adapter 2016-2025

LLJ Customs Car Audio Fabrication
Original price $15.00 USD - Original price $15.00 USD
Original price
$15.00 USD
$15.00 USD - $15.00 USD
Current price $15.00 USD
Out of stock

Our Jeep/Ram Dash tweeter adapters give you a secure surface to mount your new aftermarket tweeter. Keep everything factory and secure with our acr...

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Chevy/GMC dash tweeter adapter 2014-2025

LLJ Customs Car Audio Fabrication
Original price $15.00 USD - Original price $15.00 USD
Original price
$15.00 USD
$15.00 USD - $15.00 USD
Current price $15.00 USD
Out of stock

Our GM/GMC dash tweeter adapters give you a secure surface to mount your new aftermarket tweeter. Keep everything factory and secure, with our GM/G...

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RAM Amp Rack pickups 59" full back wall 2017-2023

LLJ Customs Car Audio Fabrication
Original price $175.00 USD - Original price $175.00 USD
Original price
$175.00 USD
$175.00 USD - $175.00 USD
Current price $175.00 USD
Out of stock

Our RAM vehicle amplifier racks are designed to mount into place using the factory bolts, This method of securing the RAM pickup amp rack to the b...

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RAM Amp Rack pickups 24" driver side 2017-2023

LLJ Customs Car Audio Fabrication
Original price $125.00 USD - Original price $125.00 USD
Original price
$125.00 USD
$125.00 USD - $125.00 USD
Current price $125.00 USD
Out of stock

Our RAM pickup amplifier racks are designed to mount into place using the factory bolts, This method of securing the RAM pickup amp rack to th...

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RAM Amp Rack pickups 37" passenger side 2017-2023

LLJ Customs Car Audio Fabrication
Original price $125.00 USD - Original price $125.00 USD
Original price
$125.00 USD
$125.00 USD - $125.00 USD
Current price $125.00 USD
Out of stock

Our RAM pickup amplifier racks are designed to mount into place using the factory bolts, This method of securing the RAM pickup amp rack to th...

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Ford Amp Rack F-series Pickups 24" Driver side 2017-2024

LLJ Customs Car Audio Fabrication
Original price $90.00 USD - Original price $90.00 USD
Original price
$90.00 USD
$90.00 USD - $90.00 USD
Current price $90.00 USD
Out of stock

Our Ford amplifier racks are designed to mount into place using the factory bolts, This method of securing the ford amp rack to the back w...

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Wāvtech Link1000.1mini

Wavtech
Original price $429.95 USD - Original price $429.95 USD
Original price
$429.95 USD
$429.95 USD - $429.95 USD
Current price $429.95 USD
In stock

The link1000.1mini is the most powerful amplifier in the Wāvtech mini series. This amp makes 1000 watts RMS @ 2ohms. The speaker level inputs of th...

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20ft 2ch Shock-Wire© Audiophile RCA Cable

Shock-Wire
Original price $115.00 USD - Original price $115.00 USD
Original price
$115.00 USD
$115.00 USD - $115.00 USD
Current price $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...

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16ft 2ch Shock-Wire© Audiophile RCA Cable

Shock-Wire
Original price $89.00 USD - Original price $89.00 USD
Original price
$89.00 USD
$89.00 USD - $89.00 USD
Current price $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
Original price $6.50 USD - Original price $6.50 USD
Original price
$6.50 USD
$6.50 USD - $6.50 USD
Current price $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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Compression lugs for 8 Awg wire

LLJ Customs Car Audio Fabrication
Original price $1.05 USD - Original price $1.05 USD
Original price
$1.05 USD
$1.05 USD - $1.05 USD
Current price $1.05 USD
In stock

Compression lugs are designed to terminate copper conductors. Each lug is electro-tin plated to resist corrosion. Ferrules Direct compression lugs ...

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Wire Stripping Tool

LLJ Customs Car Audio Fabrication
Original price $21.00 USD - Original price $21.00 USD
Original price
$21.00 USD
$21.00 USD - $21.00 USD
Current price $21.00 USD
In stock

Tool Info: Stripping Range: 0.25-6.00mm2 (24 to 10AWG) Adjustable length stop. Maximum stripping length: 15mm Strips THHN and THHW wires, as well ...

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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.