How to change 2020 RAM 1500 tail light?

The typical approach for a 2020 Ram 1500 tail light is to replace the entire tail light assembly, since many models use sealed LED units that aren’t serviceable by bulb alone. This guide walks you through identifying the right part, preparing your tools, and swapping the unit, with notes on bulb-level replacements if applicable.

What you’ll need

Gathering the right parts and tools before you start will help you complete the job smoothly. The exact parts can vary by cab and trim, so verify your vehicle’s side (left or right) and the model year before purchasing.

• Replacement tail light assembly for a 2020 Ram 1500 (ensure you get the correct side: driver or passenger)


• Optional: bulb kit if you confirm there are any replaceable bulbs inside the unit (some versions use sealed LED modules)


• Socket wrench set with assorted bits


• Torx drivers or bits (commonly Torx T15 or T20, sizes may vary)


• Plastic trim tools or a non-marring pry tool


• Phillips screwdriver and/or flathead screwdriver as needed


• Work gloves and good lighting


• Electrical contact cleaner (optional) and a clean cloth

Having these items on hand helps you perform a clean swap without scratching the paint or damaging wiring.

Removal and replacement steps

Note that exact access varies by cab configuration and bed trim. In most configurations, the tail light is mounted at the rear corner of the bed and is secured from behind the tail light housing. You may need to shift or remove some interior trim or a portion of the bed liner to access screws or bolts.

1. Open the tailgate and inspect the tail light area to locate mounting screws or bolts. In many 2020 Ram 1500 trucks, you’ll need to access these from inside the bed or behind the bumper area, sometimes behind a small panel or wheel well liner.


2. Support the tail light and remove the retaining screws or bolts using the appropriate bit (Torx or regular screws). Keep these fasteners in a safe place for reinstallation.


3. Gently pull the tail light assembly away from the vehicle body, being careful not to bend or damage the gasket or paint. If the connector doesn’t release easily, check for an additional locking tab or secondary connector.


4. Disconnect the wiring harness by pressing the release tab and carefully separating the plug from the tail light. If there is more than one connector, disconnect them all.


5. Remove the old tail light assembly and set it aside. Compare it with the new unit to confirm a proper fit and that all mounting points line up.


6. Install the new tail light by aligning the mounting holes, pushing the assembly into place, and tightening the screws or bolts securely but not over-tightening.


7. Reconnect the wiring harness(es) and test the tail light functions (parking light, brake light, turn signal, and reverse light) before reassembling any trim pieces.


8. Reinstall any interior trim, bed liner, or panels you removed, ensuring a snug fit to prevent moisture intrusion.

With the new tail light installed and tested, you’re ready to hit the road again. If moisture or gaps are noticed after installation, reseat the gasket and trim pieces to maintain a watertight fit.

Bulb-level replacements (if applicable)

Some 2020 Ram 1500 variants still offer replaceable bulbs for certain functions (for example, the reverse/backup light or turn signal bulb) even if the main tail light housing is LED. If your unit does have replaceable bulbs inside the lens, follow these steps:

1. Access the bulb compartment by removing any interior lens retainer or cover as directed by the service manual.


2. Remove the old bulb by turning it counterclockwise or releasing the clip, depending on the bulb type.


3. Install the new bulb of the same type and verify it seats properly in the socket.


4. Reattach the lens cover or retainer and test the individual function (e.g., backup light) to confirm proper operation.


5. Reassemble any trim pieces and ensure the seal around the lens is intact.

If you’re unsure whether your tail light contains replaceable bulbs or a sealed LED module, consult the owner’s manual or contact a dealer to confirm the correct service procedure.

Professional help and safety considerations

While many DIY enthusiasts can handle tail light replacement, certain steps involve working near the vehicle’s electrical system and paint edges. Consider professional installation if you’re not comfortable with disconnecting wiring or removing interior bed components. A professional can also verify proper sealing to prevent water intrusion and ensure compliance with local vehicle regulations.

• Always disconnect the vehicle battery or isolate the electrical system if you’ll be handling wiring near live circuits.


• Work slowly to avoid scratching paint or damaging the gasket. Keep fasteners organized and reuse the original hardware when possible.


• Test all functions before final reassembly to avoid repeated disassembly.

Certified technicians can also provide guidance on warranty coverage and ensure that the replacement part meets OEM specifications.

Summary

For a 2020 Ram 1500, tail light replacement typically means swapping the entire tail light assembly, as many models use sealed LED units. The process involves gaining access to the mounting screws behind interior panels or liners, carefully removing the old assembly, disconnecting wiring, and installing the new unit with proper testing of all light functions. If your vehicle’s tail light contains replaceable bulbs, you may swap those bulbs individually, but in many cases this isn’t applicable to the LED module. Always verify the correct side and part number, follow safety practices, and consider professional help if you’re unsure about wiring or sealing the assembly.