2009–2018 RAM 1500, 2500 & 3500 Halogen to 2013–2018 LED Tail Light Conversion Guide
The 2009–2018 RAM 1500, 2500, and 3500 were available with both factory halogen and factory LED tail lights, depending on trim level and equipment package. Many owners with halogen-equipped trucks choose to upgrade to the premium 2013–2018 OEM LED tail lights for their modern appearance and improved lighting.
One of the most common questions is:
Can you install 2013–2018 OEM LED tail lights on a RAM truck that originally came with halogen tail lights?
The answer is yes, but simply replacing the tail lights is not enough.
Although the OEM LED tail lights physically fit the truck, the electrical system differs between factory halogen and factory LED models. A tail light conversion harness is required to properly adapt the factory wiring so the LED tail lights can operate correctly without cutting or splicing.
This guide explains why the wiring is different, how a plug-and-play tail light conversion harness works, and what to verify before beginning your upgrade.
Why Upgrade to 2013–2018 OEM LED Tail Lights?
The 2013–2018 OEM LED tail lights are one of the most popular factory upgrades for fourth-generation RAM trucks.
Many owners choose this conversion because it offers:
- Modern factory appearance
- Brighter LED lighting
- OEM fit and finish
- Updated rear-end styling
- Factory-quality installation
OEM LED tail lights give the truck a premium appearance while maintaining the original RAM design.
Why Aren't LED Tail Lights Plug and Play?
Although the LED tail lights physically bolt onto the truck, the factory wiring is different.
Halogen and LED tail lights use different electrical configurations, so simply plugging LED tail lights into a halogen-equipped truck can result in improper operation.
A tail light conversion harness is designed to bridge these differences while preserving the truck's original wiring.
What Does the Tail Light Conversion Harness Do?
A plug-and-play tail light conversion harness connects the factory halogen wiring to the 2013–2018 OEM LED tail lights.
Rather than modifying the truck's factory wiring, the harness adapts the electrical connections so the LED tail lights can operate properly with the original wiring system.
Depending on the application, the harness is designed to:
- Adapt the factory connectors
- Correct the wiring layout
- Preserve the factory wiring
- Eliminate cutting and splicing
- Support proper LED tail light operation
Because the harness is built specifically for this conversion, installation is cleaner and more reliable than modifying the original wiring.
Integrated Resistors for Proper Operation
LED tail lights draw significantly less electrical current than traditional halogen bulbs.
Without the proper electrical load, the truck may interpret the LED tail lights as a burned-out bulb.
This conversion harness includes integrated resistors designed to help:
- Prevent hyperflash
- Reduce bulb-out warnings
- Help eliminate lighting error messages
- Support proper operation of the OEM LED tail lights
The resistors are integrated into the harness, providing a clean installation without additional wiring modifications.
Optional Premium Load Resistor Upgrade
The standard conversion harness already includes the components required for proper LED tail light operation.
Customers looking for upgraded hardware can select the optional Premium Load Resistor Configuration, which replaces the standard integrated resistors with premium aluminum load resistors.
Benefits of the premium configuration include:
- Improved heat dissipation
- Heavy-duty aluminum construction
- Enhanced durability
- The same intended lighting functionality with upgraded resistor hardware
This option is ideal for customers who prefer premium components while maintaining a factory-style installation.
Designed Only for Factory Halogen Trucks
This conversion harness is designed only for 2009–2018 RAM trucks originally equipped with factory halogen tail lights.
It is not compatible with:
- Trucks originally equipped with factory LED tail lights
- 2019+ RAM Classic models
- Aftermarket tail lights with non-OEM connector pinouts
Verifying your truck's original lighting package before purchasing helps ensure you receive the correct conversion harness.
Why Choose a Plug-and-Play Installation?
Many lighting conversions require cutting factory wiring or building custom adapters.
A plug-and-play tail light conversion harness eliminates permanent wiring modifications by connecting directly to the factory connectors.
Benefits include:
- No cutting or splicing
- Factory wiring remains intact
- Cleaner installation
- Easier future servicing
- Professional OEM-style fit and finish
Keeping the original wiring intact also makes future maintenance much easier if the tail lights ever need to be removed or serviced.
What This Harness Fits
RAM 1500
- 2009 RAM 1500
- 2010 RAM 1500
- 2011 RAM 1500
- 2012 RAM 1500
- 2013 RAM 1500
- 2014 RAM 1500
- 2015 RAM 1500
- 2016 RAM 1500
- 2017 RAM 1500
- 2018 RAM 1500
RAM 2500
- 2010 RAM 2500
- 2011 RAM 2500
- 2012 RAM 2500
- 2013 RAM 2500
- 2014 RAM 2500
- 2015 RAM 2500
- 2016 RAM 2500
- 2017 RAM 2500
- 2018 RAM 2500
RAM 3500
- 2010 RAM 3500
- 2011 RAM 3500
- 2012 RAM 3500
- 2013 RAM 3500
- 2014 RAM 3500
- 2015 RAM 3500
- 2016 RAM 3500
- 2017 RAM 3500
- 2018 RAM 3500
This harness is intended for trucks originally equipped with factory halogen tail lights that are being upgraded to 2013–2018 OEM LED tail lights.
Before You Purchase
Before ordering your conversion harness, verify the following:
- Your truck is a 2009–2018 RAM 1500, 2500, or 3500
- Your truck originally came with factory halogen tail lights
- You are installing 2013–2018 OEM LED tail lights
- Your replacement tail lights use OEM connector pinouts
- Your truck is not a 2019+ RAM Classic
Taking a few minutes to verify these details helps ensure you receive the correct harness for your conversion.
Frequently Asked Questions
Do I need to cut or splice any wires?
No. This is a plug-and-play tail light conversion harness that connects directly to the factory wiring.
Will this help prevent hyperflash?
Yes. The harness includes integrated resistors designed to help prevent hyperflash while also reducing bulb-out messages and other lighting errors commonly associated with LED conversions.
Will this work on trucks that already have factory LED tail lights?
No. This harness is only designed for trucks originally equipped with factory halogen tail lights.
Will this work on a 2019+ RAM Classic?
No. This conversion harness is not compatible with 2019+ RAM Classic models.
Are the tail lights included?
No. The kit includes one left and one right tail light conversion harness. The OEM LED tail lights are sold separately.
Final Thoughts
Upgrading a 2009–2018 RAM 1500, 2500, or 3500 from factory halogen tail lights to 2013–2018 OEM LED tail lights is one of the most popular factory-style lighting upgrades for fourth-generation RAM trucks.
Because the factory halogen and LED systems use different wiring layouts, a vehicle-specific tail light conversion harness is required to properly adapt the electrical connections while preserving the original factory wiring.
With a plug-and-play design, integrated resistors to help prevent hyperflash and lighting errors, and an available Premium Load Resistor Configuration featuring heavy-duty aluminum resistors, this conversion harness provides a clean and reliable solution for upgrading your RAM truck to 2013–2018 OEM LED tail lights.
