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Welcome to our new Site We are adding some final touches. For other T-harnesses Options please visit T-harness.com. Thank you
Welcome to our new Site We are adding some final touches. For other T-harnesses Options please visit T-harness.com. Thank you
LLJ Speaker Harness Adapters

LLJ Speaker Harness Adapters

Speaker Harness adapters are used to connect an aftermarket speaker to the factory OEM speaker connector in the door or dash even in the headrests. The Speaker harness adapter keeps you from having to cut the factory plug and maintains the integrity of the vehicles warranty. We recommend you solder & shrink tube the speaker harness leads to the speakers for a secure connection.

The speaker adapter harness comes with 8"inch 100% OFC copper leads covered with tesa to keep the noise down from any swinging wires.     

Chevy/GMC Speaker Harness Adapter 2014-25

Shock-Wire
Original price $3.50 USD - Original price $3.50 USD
Original price
$3.50 USD
$3.50 USD - $3.50 USD
Current price $3.50 USD
In stock

GM/GMC speaker adapter harness. This speaker harness is ideal for connecting aftermarket speakers to the factory speaker harness in doors and dash....

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Chevy/GMC Tweeter Harness Adapter 2.75" 2019-25

Shock-Wire
Original price $3.50 USD - Original price $3.50 USD
Original price
$3.50 USD
$3.50 USD - $3.50 USD
Current price $3.50 USD
In stock

GM/GMC speaker adapter harness. This speaker harness is ideal for connecting aftermarket speakers to the factory speaker harness in dash, pilers or...

View full details

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.