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 assembled in St. Louis, Missouri by Diode Dynamics.

Experience. After over a decade in business, Diode Dynamics is the most trusted name in automotive LED lighting. Unlike every other LED distributor, we assemble 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