Collection: Elite Express System

The Elite Express System is our middle ground between the DIY’er and our finished Elite System. The nature of our business means that offering as many options as we do leads to long manufacturing lead times. We hope that by offering a system that is plug and play but is not cosmetically finished we cut down on the time from when the product is ordered to when it is shipped. This, in return, will allow our customers to still have the 100% plug and play functionality. While also allowing them to loom the harness to a true custom fashion by being able to decide exactly where the loop splits and how long each end is.


For Example:

In a vehicle where the processor and the amplifier cannot be mounted together, our standard 2 foot separation might not be ideal on a 10, 15 or 20ft Loopback Harness. The ability to individually loom becomes extremely important to get the harness signal and return where it needs to be or where it best fits. This is particularly ideal when the processor is under one seat and the amp needs to be under another. In this instance you could cut the signal side to about 12ft (or where needed) and the return side longer or shorter, based on where that amp would be mounted.

The harness will come with all the required materials as shown in our “Self Assembly Video”.


Ideal Tools:

  • Electric Hot Knife
  • Temperature regulated heat gun
  • Wire Strippers
  • Wire cutter
  • Crimper

Standard Tools:

  • Good quality scissors
  • Lighter
  • Hair dryer (if you leave in AZ, just leave it outside🥵)
  • A knife or medium-strong teeth (to strip the wire)


What’s Included Loopback Harness

  • 20ft Loopback Harness (4 or 6 channel)
    • 20awg signal side, 16awg return side. Twisted pair, 300v custom LLJ Wire
    • With Elite Harness Style connection
    • For vehicles with factory amplifier we will offer a 5ft and a 20ft option
    • Signal side and return side will be separated and marked
  • Looming and Shrink Tube Kit


In summary, you receive your loopback harness, you cut it to the length you need, loom it, shrink tube it and you’re ready to go.


In the years of designing and selling these systems we have collected very useful information that suggests that the majority of our customers will start with a subwoofer but eventually end up adding a 4 channel or 6 channel amplifier. With this information we have decided that we will be offering the Express Elite T-Harness design in a 5ft or 20ft, 4 channel only. The 2 channel 5ft or 20ft option will only be available for some factory amplified systems. If the connector is compatible you will see the 2 channel option available in the build out options.


What’s included in the T-Harness:

  • 20ft or 5ft 4 channel T-Harness
    • 20awg, twisted pair, 300v custom LLJ Wire
    • With Elite Harness Style connection
    • For some factory amplified systems we will offer a 2 channel option
  • Looming and Shrink Tube Kit


We are always open to feedback and comments from our customers. After all, this company was built to help with the simplification of installing car audio in modern vehicles. While delivering a solution that is cost efficient and designed to outlast its purpose.  

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What is the Elite System ?

Our Elite Harness system is a type of harness that combines our OEM Loopback Harness with the T-Harness, and lets you build it based on your needs. The best part is the base connector is interchangeable, so when you change cars you can take your equipment and harness with you.

The Elite T-harness style is best used for 2 reasons:

1. You’re just adding subs (2-channel /mono amplifier) or

2. You have a bunch of free time to run wires and extra cash to spend on new speaker wire, rather than using what is already in the vehicle.

Adding a mono amplifier for subwoofers means just that MONO or single. The idea behind this is that you generate “1 channel” from the Left and Right side of the vehicle. Why is this important? That’s simple, some music is recorded to have select frequencies that play on the left, that DON’T play on the right. If you want to get the full experience, a center signal is best. Tapping into just 1 speaker is not the answer and you’re only sabotaging yourself.

Ok great so you have a sub and it sounds amazing! Hold on a sec!.. Where are the vocals, they sound dead? This is the situation for 8 out of 10 customers. In most situations you’re stuck buying ALL new equipment to add a 4-channel amplifier for the doors.

Enter the Elite LoopBack System! This style is unique and offers freedoms that absolutely NO OTHER system or integration harness offers. Top functions are:

1. It provides all available signal wires to you directly from the OEM source. This is called High Level.

2. It then takes the amplified signal from the aftermarket system and takes it back through the factory wires to the OEM speaker locations. Our Wire is 100% OFC Copper, 300V Fire resistant, balanced wire.

3. Electro Magnetic Interference protected twisted pair. Our system doesn’t just make your installation fast and simplifies the process, it saves you money on overpriced RCA and speaker wire you just don’t need.

4. The harness will handle 225 Watts RMS (It is the square root of the time average of the voltage squared. AKA Alternating Current or AC+/-. (Keep in mind that anything involving the signal & audio is measured with AC not DC)

5. It provides power and ground to run a small DSP or processor like a Link4, LC2i Pro, etc.

6. It also provides the opportunity to use it to run a Link2 or BassRestor as a 2 channel. Once you are ready for the full system you can easily add an amplifier that takes high level in or add an LC7i and run whatever amps you already have. In reality, for the price, you can’t beat the functions or options of our Elite Harness System.

7. 5 Year Warranty!

The Elite System is the future of car audio; everyone else is just behind or trying to squeeze you dry. Our kits use only the best in materials and are built by hand here in Arizona, USA! From our rip stop loom to the high temp, water proof shrink tube, to the Factory OEM TESA tape to keep our OFC fire resistant wire looking factory. The modular design of this harness lets you spend more time enjoying your system than installing it!

Do it right, Do it fast, Do it the LLJ way.

What is ANC ?

Active-noise-control(ANC) technology takes advantage of the vehicle's audio system to diminish unwanted noise generated by the engine. To reduce that noise, engineers use active acoustic control or ANC to generate noise-cancellation signals, which are played on loudspeakers in the car's cabin. If this signal is processed by the aftermarket amp you will hear rumbling when engine is revving up or your subwoofers are picked up by the ANC microphones. In this situation the ANC must be bypassed.

Elite System Explained