Diode Dynamics 4th Brake Light

 

Diode Dynamics 4th Brake Light converts the factory reverse light area on compatible Ford Mustang models into a multifunction rear lighting upgrade. It is built for customers who want the center rear lamp location to provide bright white reverse output while also adding red running and brake light behavior.

This upgrade gives the Mustang a more distinctive rear lighting signature without replacing the factory tail lights. The red running light function adds a clean nighttime appearance, while the supplementary brake light function helps the rear lighting feel more complete when the brakes are applied.

The kit is designed for 2015-2023 Ford Mustang applications and uses OEM connectors with an included wiring harness. Its vehicle-specific layout keeps the installation focused and helps the finished result look integrated rather than like a universal add-on.

White reverse light operation remains part of the design, with the red output shutting off when the vehicle is placed in reverse. That combination gives customers a useful rear visibility upgrade while preserving the reverse lamp role of the center light location.

Installation uses the included module, wiring harness, switchback bulb, and mini screwdriver. Customers should plan for access to the reverse light area, careful connector routing, and a full function test after the module and bulb are installed.

Whether customers are upgrading for Mustang appearance, added rear lighting function, or cleaner reverse light output, the Diode Dynamics 4th Brake Light delivers a focused lighting solution with clean integration and confident everyday usability. Now Available at LEER! The upgrade is especially useful for customers who want a finished result that looks intentional rather than improvised. Its compact, application-matched design helps the finished installation blend naturally with the vehicle. The result is a practical electrical or lighting upgrade that supports a cleaner final build.

 

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Features & Specifications

Product Type: Back up light assembly and brake light conversion kit

Brand: Diode Dynamics

Vehicle Fitment: 2015-2023 Ford Mustang

Operating Voltage: 9-16V

Operating Temperature: -40C to 85C (-40F to 185F)

Included Components: Module with wiring harness, switchback bulb, and mini screwdriver

Functionality:

• Converts the factory reverse light area into a red running and brake light function
• Keeps bright white reverse light output for backing up in low-light conditions
• Uses OEM connectors and an included wiring harness for a clean installation path
• Adds a centered rear lighting accent that complements factory Mustang tail lights
• Provides separate lighting behavior for running, braking, and reverse operation
• Helps compatible Mustangs stand out with a more complete rear lighting layout

 

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Why Choose

This product is ideal for customers who want a multifunction rear lighting upgrade that adds style and practical visibility.

• Adds red rear lighting behavior without replacing the tail light housings
• Improves the look of the center reverse lamp area with a more modern function
• Maintains white reverse output for low-light backing situations
• Uses vehicle-specific wiring for a more integrated installation
• Creates a centered brake light accent that fits the Mustang rear design
• Works well for customers who want a visible upgrade with factory-style fitment

 

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What's Included

• One module with wiring harness
• One 3157 red and white switchback bulb
• One mini screwdriver
• Installation instructions or product guide when supplied

Note: Confirm included components before installation.

 

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Installation Notes

• Confirm compatibility with 2015-2023 Ford Mustang before installation
• Access to the factory reverse light area is required
• Test running light, brake light, and reverse light functions after installation
• Route wiring away from heat, pinch points, and moving components

Buyer is responsible for use in accordance with applicable vehicle, road, off-road, towing, racing, and local laws.

 

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Warranty Information

Diode Dynamics products are typically backed by a 3-year replacement limited warranty, with coverage handled through troubleshooting and replacement when warranty terms apply.

Warranty coverage typically excludes improper installation, misuse, modifications, electrical issues, overloading, tampering, impact damage outside warranty terms, or non-compliant use. Proof of purchase may be required for warranty claims.

Warranty eligibility, claim handling, and replacement decisions are subject to brand review and the warranty terms in effect for the purchased product.