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  2005-2006 Ford Mustang Smart Junction Box Genuine OEM New
2005-2006 Ford Mustang Smart Junction Box Genuine OEM New

Additional Photos:

Price: $274.32

Stock Status:In Stock

Brand New Genuine Part.

Free 10 Year Warranty Included.

Orders Placed Today Get Delivered To You:

In 2 - 4 Business Days

When You Select The $6.95 Priority Mail Shipping Option.

Availability: In Stock

SKU Number: 5R3Z-15604-DC


Vehicle Configuration*:
Hardtop Coupe


10 year Warranty on SJB Modules. This Module Is Covered by our Exclusive 10 year Warranty. We Will replace any module that fails due to manufacturers defects for a period of 10 years.
That's 10X The warranty of the Dealer! *No Water Damage Coverage. Fix your Windshield First!
*Warranty Does not Cover Labor, Shipping, Or Consequential Damage.

About This Module:

This Module Is Brand New. This Module Is a Genuine Ford Product.

This Module Fits Year Models: 2005 and 2006

This Module Fits Series: Ford Mustang

This Module Requires Programming.This Module Must be programmed by a local shop in your area. The vehicle must be present for proper programming. The Shop Will download the codes into your new module. The module will not work correctly until this is done.

Avoid the Ford Dealer.
In our experience the dealer charges inflated prices for this service. It should take no longer than 30 minutes to program, however most dealers charge a minimum of 3 hours for the job. Most Ford Dealers will also not let you bring in your own part, or make excuses when you do, usually blaming the part as defective in order to switch you to their higher priced part.

Most Larger independent shops have the proper equipment to to do the job with minimum cost and hassle.

The Original Problem

Do you have a Mustang. Do you have annoying electrical problems that are driving you crazy?

Although each Mustang is different and can either show just one or many of these symptoms, the list below is the most common, symptoms we know of, but does not describe every symptom. The only way to know if your SJB is bad with 100% Accuracy is to have it tested by a qualified mechanic with the proper equipment.

Common Symptoms of a bad SJB. (this is a broad range of symptoms, your vehicle may only experience one or more symptoms at a time).

  • One or More Brake lights is stuck on at all time.
  • Battery Drains Quickly When Car Sits for a few days
  • Headlights are on bright all the time.
  • Turn Signals or parking lights are stuck.
  • Power Windows do not work
  • Instrument cluster malfunctions
  • Dash lights quit working.

The original Smart Junction Box installed in these Mustangs had 2 major problems.

Problem 1: The windshield leak problem. These cars had a bad seal from the factory that allowed rain to drip down on the bottom of the windshield. The water leaks directly into the SJB box, and ruins it.

Problem 2: Poorly engineered part when the car was new. These circuit boards were poorly made, and after a few years of heat and cold, they fail to function any more. There are no repairable parts in a SJB; the whole module must be replaced.

You Must Fix your Windshield Leak before Installing the new box. Our Warranty does not cover water damage.

Be careful!

Many companies and dealers are still selling the old design because it is cheaper and they can make more profit. If you get the old design you will just have the same problem again. We only sell the new design SJB

Our Solution

We are selling a Genuine Ford GEM completely revised module that Will never fail again (as long as you have fixed the windshield leak mentioned earlier). The new SJB is completely redesigned internally by Ford engineers to never fail again

Important Part Number Information:The part number on your old SJB will not match the one we send you. We are sending you the newest updated genuine Ford version, with the newest part number. Each time it is revised the part number changes, so the part number you receive from us may be nothing like the original.

Special Return Policy Applies to this Module

Modules are not returnable for a refund, but are returnable if defective, for a swap of another module during the 10 year warranty period. In other words we will not give you money back for a module, but if it is defective (not water damaged), we will be happy to change it for another module for you.

Why This Policy?

Unfortunately since these modules are commonly bought as test parts to diagnose a problem on a vehicle, we are unable to accept a return of any SJB module for a refund for any reason. Just think about it this way, nobody wants to buy a returned module that somebody else used to test their vehicle, Anything could have happened to it during that time, including shorting it out, getting it wet, breaking connector pins etc. You do not want to buy somebody's problem and we do not want to sell you one.

We want to remain as open and honest with our customers as possible therefore we have instituted this policy. Once you purchase the SJB it cannot be returned even if you have never opened the box, please know that the module is yours to keep once purchased.

The Module does however have a 10 year warranty, and if found to be defective within 10 years, we will swap the module out for a new for you during this time.

10 year warranty

This Part Is Covered By Our Exclusive 10 Year Warranty.

If the part fails due to manufacturing defects within 10 years of your purchase, we will replace it at no charge to you.

First Time Shopping With Us?

Watch a Short Video About Us and See What We're All About.

Our 45 Day Satisfaction Guarantee is Simple:

Take up to 45 days to examine and use your part If during the 45 days you feel the Auto Part you bought from us is not of the absolute, highest quality in both function and craftsmanship, We will make it right with a refund or a replacement.

More About Our Parts:

  • Our Parts are Top of The Line-Premium Grade Auto Parts. This is not your average, everyday auto part found at your local auto parts store.
  • Our Parts are 100% Genuine and are Factory Fresh.
  • This Part is the Exact Same Part you would purchase at your local new car dealership, which includes all of the latest updates and revisions.
  • We personally inspect each and every part for quality before we send it out to you.


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