2022 Ram 1500 — Bulb Sizes (Headlight, Tail, Fog)

As an ASE-certified master technician, I’ve seen my fair share of 5th-generation Ram trucks roll into the shop. The 2022 Ram 1500 is a fantastic truck, but depending on your trim level—whether you have a work-ready Tradesman, a mid-level Big Horn, or a luxurious Limited—your lighting setup can vary wildly. Ram offers both traditional halogen setups and advanced factory LED packages.

If you're looking to replace a burnt-out bulb or upgrade your halogen lights to aftermarket LEDs, you need the right sizes. Below is your comprehensive guide to the 2022 Ram 1500 bulb sizes.

Quick reference

Note: Trims with factory LED lighting packages (often standard on Laramie, Rebel, and Limited) feature sealed LED assemblies. If an LED fails in these units, the entire housing must typically be replaced. The sizes below apply to models equipped with factory halogen housings.

LED vs halogen upgrade considerations

Upgrading your halogen Ram 1500 to aftermarket LEDs is incredibly popular, but Mopar vehicles are notoriously picky when it comes to aftermarket lighting.

CANBUS System and PWM: The 2022 Ram 1500 uses a Pulse Width Modulation (PWM) electrical system managed by the Body Control Module (BCM). If you simply plug in an aftermarket LED bulb, the truck will likely detect a drop in power draw, assuming the bulb is dead. This results in dashboard "bulb out" error messages, hyper-flashing turn signals, or headlights that flicker and shut off completely.

Adapters Needed: To successfully upgrade to LEDs on a halogen-equipped Ram, you will almost certainly need CANBUS decoders (anti-flicker modules) for your H11 low beams and 9005 high beams. For turn signals, you will need load resistors to prevent hyper-flashing.

How to replace each bulb

Here are a few technician tips for replacing the most common bulbs on your 2022 Ram 1500:

• Headlights (Low/High Beam): Accessing the headlight bulbs on the 5th-gen Ram can be slightly tedious. While you can reach some from the top by removing the upper plastic radiator cover, the easiest method is often going through the front wheel wells. Turn your wheels inward, remove the push-pins holding the fender liner access panel, and reach up to twist the dust cover off the headlight assembly.
• Fog Lights: These are easily accessible from underneath the front bumper. Just reach up behind the bumper corner, squeeze the tabs on the wiring harness, and twist the H11 bulb counterclockwise to remove it.
• Tail, Brake, and Rear Turn Signals: Drop the tailgate and locate the two T27 or T30 Torx bolts on the inner edge of the tail light assembly. Remove them, and pull the assembly straight back toward you (do not pry outward, or you'll snap the plastic alignment pins). Twist the bulb sockets to replace the 3157 bulbs.
• License Plate: Get under the rear bumper, grasp the bulb socket behind the bumper step, and twist it counterclockwise. Pull the old 194 bulb straight out of the socket.
• Interior Dome/Map Lights: Most 2022 Rams come with integrated LED map lights that cannot be serviced with a simple bulb swap. If you have the base trim with incandescent bulbs, gently pry the plastic lens off with a plastic trim tool to access the 194 bulbs.

Common lighting issues for this generation

The 5th-generation Ram 1500 (2019-present) is largely reliable, but it does have a few known lighting quirks.

The most common issue we see is moisture condensation in the tail lights. While a slight mist that burns off is considered normal by the manufacturer, pooling water inside the lens is not. If you have a halogen housing, pooling water will eventually short out the 3157 bulbs. If it's a factory LED housing with water intrusion, the whole $400+ unit will short out. Check your seals if you ever replace a rear bulb.

Another issue involves the BCM permanently cutting power to a lighting circuit if it detects too many short circuits or voltage irregularities (often caused by cheap, un-resisted aftermarket LEDs). If this happens, replacing the bulb won't fix it—the module will need to be reset with a professional scan tool.

If you're dealing with stubborn electrical faults, CANBUS headaches, or sealed LED assemblies that have failed, don't guess at the repair. Find a trusted shop on Repairius.