Elite T-harness system

Elite Bose Factory Amplifier Loopback Harness Accessory

Custom made to order product

Key Features

  • LOC Unit is pre-wired
  • Audio Turn-On (prevents turn on/off pop)
  • High grade aluminum case
  • Shock-Wire© twisted speaker wire
  • 100% copper 
  • 300v oil/fire resistant wire jacket
  • 5 year warranty 
  • Distortion detection 
  • 13v+ of signal output 
  • T-harness is 18-20 inches end to end
  • 12v remote turn on for amp 
  • 100% plug and play 
  • Abrasion resistant loom
  • TESA Taped to fit OEM   
  • OEM fitment guarantee 
  • Locking detachable speaker terminals
  • Deferential balanced input

Starting at :

$165 USD
This product is only available through our Custom Elite Harness Builder Program. (CEHBP)
Email: Support@lljcustoms.com
Text or schedule a call: 602-320-7004

The Elite 6ch Factory Amplifier Loopback Harness Accessory was specifically designed to work and plug into the factory amplifier, making the process of installing an aftermarket amp much easier and quicker. This accessory is designed to work with vehicles that have a Bose, AKG or an Alpine amplified system. 

The harness will provide a total of 6 channels, the dash speakers, the front doors and the rear doors. In vehicles with a factory amplifier, the system is ran as an active system; with each speaker working off of its own individual channel off of the factory amp. Without affecting any of the features the amp or vehicle carries, the harness will provide the audio signal the factory amp is outputting and feed that into a processor or aftermarket amplifier (please check the input voltage on the aftermarket amp before wiring directly) and return the amplified signal back to the speakers. The Loopback Harness was designed to allow you to use your factory wiring when amplifying your speakers. Saving you time installing; no need to cut/splice into your vehicles wiring. 

The factory amplifier does have a much higher output than non-amplified vehicles. Most factory amps will output anywhere between 30-36v. You need to check BEFORE wiring the harness directly into your aftermarket amp, that your amp can indeed handle that input voltage. 

This harness can be customized and built to a full plug and play kit, for example:

  • If you’re adding a 6-channel amp that does not take a high level (minimum 32v) we offer a 6ch processor, a Link6. This will offer 6ch RCA out and remote turn on to the amp.
  • For easy tuning and installation, we offer several amplifier options, all of which can handle the high level and they have a built-in processor or DSP. An LC6.1200 and a D6.1200 will power all 6 channels in the vehicle and offer RCA out to a sub or sub amp. The LC Series has an analog processor built in (the LC7i technology) and the D Series has a built in DSP. 

You always have the option of using your own equipment. The harness can be wired to your own Processor or Amp (verify the input voltage before wiring directly). You can add Wire Ferrules or RCA to your harness, depending on what your equipment requires. 

If your vehicle DOES NOT have a factory amplified system (Factory Amplifier) this harness will NOT work. Please refer to our Elite 4ch Loopback Harness Accessory for non-amplified vehicles. 


 **Loopback Harness currently have a 30-45 business day lead time, this timeframe can vary depending on customizations . **


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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 then 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 future.

Low Level : is 0-8v of signal voltage. This is most commonly found inaftermarket 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 lest you control the signal, its intercity 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 dont need an loc unit and can wire in and out of your amp
directly. In some fords the signal can be flattened at the OB2 furthering the simplification of the installation.

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