There's much to see here & more to come. So, take your time, look around, and learn all there is to know about us. Please reach out to us with any questions you might have,odds are we can do it or already have it. We hope you enjoy our site and take a moment to:

Corona virus (CoVid-19) Update

As of 3/20/2020


We would like to take a moment to assure our customers that we will be in full operation during this health epidemic.

Our first priority is the safety of our customers and team members. We have taken extra steps and implemented new protocols to help keep everyone safe. Our goal is to keep operations running at our normal business hours in a safe manner during this unprecedented and evolving situation. If anything is to change we will immediately send out an email

On that note, shipping will be done twice a week on Wednesdays and Fridays. If any changes irises we will notify you immediately.

Stay Safe, Stay Loud!


Please understand that all harnesses are CUSTOM made when the order is placed. Availability is based on product and parts inventory. Orders are shipped in the order they are placed, Lead times are subjected to change and are on the product description . 

Thank you !


Factory System Integration Kits (S.I.K)

Factory System Integration Kits (S.I.K)

Factory System Integration Kits (S.I.K)

Plug and play system integration for car audio

Why change out that expensive head unit you already own. Let S.I.K help you save time and money !

The Rattler

Factory System Integration Kits (S.I.K)

Factory System Integration Kits (S.I.K)


Ever wonder if you can do your own Subwoofer installation? Let us save you the trouble, take a look at our plug and play sub systems. Car specific for optimal P&P.

Our Story


Our Mission Statement


 LLJ Customs is a family owned and operated business built to support our community of mobile audio enthusiasts and new comers! We are located in the very hot, very tornado free, sunny Phoenix, Arizona! 

  At LLJ Customs we’re not going to sell you equipment you don’t need. We are here to help you design and build your dream system from the most basic to the complex. With over 20 years of combined experience we will answer any question you may have and if we don’t know the answer we will figure it out together! We stand behind our products 120%! Everything we build is custom fitted and tested to work with your set up! 

If you do not see what you are looking for listed below, please feel free to reach out to see how LLJ Customs can be of service to you!  


Experienced Installers

The installers at our shop has over 10 years of experience in car audio and specialize in car stereo installation. They are dedicated to providing high-quality installations and mind blowing designs! As the owner and installer, I take care of every install as if it was my own. This is why we charge by the job, not hourly, and only do installations by appointment so there is no sense of rushing. 


Why LLJ Customs

What sets us apart from our competitors is not just the care that we put into our work, but the tools and materials that we use to make our work the best! 

We don't :

  • Use butt connectors, we solder all our connections.
  • Use electrical tape, we use Automotive grade Tesa Tape.
  • Use MDF to make door adapters, we use high temp ABS,PVC & Acrylic plastics. 
  • Use sheet metal screws, we use stainless steel threaded nut inserts and hardware.

What we offer

LLJ Customs offers Many more options than what is listed please feel free to reach out to us and ask how we can help with your project.