2015-2019 Ford Mustang 4th Brake Light

Custom Appearance. If you're looking for a way to make your S550 Mustang stand out, here's a perfect solution! The Diode Dynamics 4th Brake Light Kit converts your factory reverse light to shine both bright white, and red. Not only do you get an upgraded backup light, you can also add a red running and brake light, for a unique, modern look on the road.

Red Running Light: The red light comes on at 50 percent brightness anytime you have your parking lights or headlights on, to serve as a rear fog lamp. This provides a distinct appearance at night, complementing the factory LED tail lights.

4th Brake Light: When you hit the brakes, the red light powers at full brightness, to serve as a supplementary brake light, for greater visibility and a unique look.

White Reverse Light: Anytime you're in reverse, the red shuts off completely, so your backup light can illuminate in a crisp, white color. There is no change to the factory reverse function, you just get an improved output from the white LED!

Easy Installation. Using OEM connectors and the included wiring harness, this kit is 100 percent plug-and-play and installs in minutes. Actual installation time is less than 20 minutes. This is one of the easiest ways to make your Mustang stand out on the road!

Reliable Operation. This module has been designed with quality components, custom-tooled OEM-grade connectors, and includes embedded circuit protection, for high reliability over time. It is proudly manufactured in St. Louis, Missouri by Diode Dynamics Manufacturing.

Experience. After over a decade in business, Diode Dynamics is the most trusted name in automotive LED lighting. Unlike every other LED distributor, we manufacture and engineer products ourselves in the United States, for high quality and fast time-to-market of the newest and brightest LED technologies. We pride ourselves in offering only quality LED products, that will exceed your expectations.
Features

• Converts reverse light to also function as a running light and 4th brake light
• OEM connectors and wiring harness for simple plug-and-play installation
• Made in USA

What's Included In the Box:

• One (1) module, with wiring harness
• One (1) 3157 red/white switchback bulb
• One (1) mini-screwdriver
• Quantity: One (1)
• Warranty: 3 year warranty
• Return Policy: 30-day Return with no restocking fee
• 100 percent Satisfaction Guarantee

Fitment

• Note: This module is compatible with USDM models only - it is not compatible with EU/AU Mustangs
• Make: Ford
• Model: Mustang
• Years: 2015, 2016, 2017, 2018, 2019
• Electrical Compatibility: No electrical issues (tested and confirmed)

Specifications

• Operating Voltage: 9-16V
• Operating Temperature: -40C to 85C (-40F to 185F)
• Connector(s): OEM-Size Plug and Play
• Weight (lb): 0.6563

What is your shipping cutoff time? 

Cutoff time is 1pm EST. Assuming we have all your parts in stock, the order should ship the same day. If you need a product by a specific date, please call us to find out if its possible to meet your deadline before ordering. Please be aware that there may be discrepancies with shipping calculators or “in stock” status of a product. 

Will I receive a tracking number? 

Of course! As soon as your order is shipped you will receive a tracking notification through email. You can also always log into your account and check the tracking information on the order. 

Is shipping free? 

Orders over $99 qualify for free shipping within the contiguous  United States. *Services are excluded from free shipping. We will chose the most economic method. If you need a product as quickly as possible, always best to chose an expedited shipping option. 

Return Window

We allow up to 90 days from the original purchase date to return your item for an exchange or store credit. If you wish to return the product for a refund, we allow up to 45 days from the original purchase date. 

Shipping 

Customers are responsible for return shipping costs, unless of course we made an error when we shipped out the order. Please contact us if an error was made, we can send over a return label to the email address on file to begin the exchange process. 

Refunds/Store Credit

Please be advised that any free shipping promotions used on the original order will be forfeited if the order is returned and the original shipping costs (paid or unpaid) will also be deducted from the refundable amount.  Refunds can only be processed to the original payment method. Store credit will be sent through an email gift card, which you can apply to your next order with us. 

Our standard restocking fee structure is outlined below. Please refer to our exchange and refund policies for important timelines. 

Tier 1: Perfect condition. (Unopened & like-new) = 90% refund or 100% store credit.
Tier 2: Re-conditionable. (Packaging opened or damaged) = 80% refund or 90% store credit.        
Tier 3: Inability to restock. (Product & packaging both damaged) = 70% refund or 80% store credit. 

Exclusions

If the part has been installed, and shows signs of use, we are unable to take the product back for an exchange or refund. Original Osram and Philips bulbs cannot be returned if the authenticity seal has been broken. Any special ordered item, such as a custom headlight conversion, is not eligible to be returned. 

HID and LED bulbs are street legal in the USA for Fog Light use only. Not compliant with DOT / FMVSS108 and not street legal in the USA for Headlights. Legal for off-road use in Snowmobile and ATV headlights and off-road racing use only auxiliary or forward lighting. International street legality varies by country. 

Note: This usage regulation is not unique to products found on our website. All LED and HID bulbs from all other brands, regardless of marketing claims, are prohibited from street use in halogen headlights in the USA. To find street legal LED headlight assemblies, click HERE.