What Size Bulbs Does a 1994 Dodge Ram 2500 Use?
Correct headlight, fog light, and tail light bulb sizes. Sourced from OEM catalog data.
Installation Difficulty
Easy (Plug and Play)
Est. Replacement Cost
$15 - $40 (Halogen) / $30+ (LED)
What Lighting System Does the 1994 Dodge Ram 2500 Have?
The 1994 Dodge Ram 2500 features an extensive lighting system with 11 bulb positions. It uses halogen technology with 9004 LED low beams and PC194 high beams in a dual-bulb configuration. The Ram 2500 has been available from 1994 to 2010, and the 1994 model falls in the early-generation years. As a Dodge vehicle, it uses a CANbus electrical system that monitors bulb status.
LED Flicker Warning
This vehicle (Dodge) is known to use a CANbus system that checks for burnt-out bulbs. Installing standard LEDs may cause them to flicker or trigger a dashboard error.
We highly recommend using a CANbus decoder or "Anti-Flicker" resistors.
Can You Put LED Bulbs in a 1994 Dodge Ram 2500?
To upgrade the 1994 Dodge Ram 2500 headlights to LED, you will need a 9004 LED LED kit for the low beams and a PC194 LED kit for the high beams. Start with the low beams since they are used most often and have the biggest impact on nighttime visibility. Important: Dodge vehicles use a CANbus system that detects bulb wattage. Standard LED bulbs may trigger dashboard warnings or flicker. Choose LED kits labeled "CANbus-compatible" or add inline decoder resistors to prevent these issues. For the fog lights, a 893 LED LED bulb provides a clean white output that pairs well with LED headlights.
How to Replace Bulbs on a 1994 Dodge Ram 2500
To remove the headlight bulb, disconnect the wiring harness, then twist the bulb counter-clockwise and pull it straight out of the housing. Older model years like the 1994 Ram 2500 typically offer easy access to the headlight bulbs from behind the headlight assembly under the hood. Most owners can complete the swap in under 10 minutes per side. When installing the new bulb, avoid touching the glass with bare fingers. Skin oils create hot spots that shorten bulb life. Wear clean gloves or handle the bulb by its plastic base only. The fog lights are accessed from underneath the front bumper. You may need to remove a few plastic clips or screws from the fender liner to reach the 893 LED fog light socket.
Full Upgrade Bundle
Upgrade All 11 Positions at Once
1994 Dodge Ram 2500 Complete Bulb Size Chart
| Position | Bulb Size | Shop |
|---|---|---|
Low Beam | 9004 LED | Buy 9004 LED |
High Beam | PC194 | Buy PC194 |
Fog Light | 893 LED | Buy 893 LED |
Brake Light | PC194 | Buy PC194 |
Side Marker | 194 LED | Buy 194 LED |
Turn Signal Front | 3157NA LED | Buy 3157NA LED |
Turn Signal Rear | 3157 LED or 1157 LED | Buy 3157 LED or 1157 LED |
Reverse Light | 1156 | Buy 1156 |
License Plate | 168 or 1155 | Buy 168 or 1155 |
Parking Light | 3157NA | Buy 3157NA |
Trunk Light | 921 | Buy 921 |
Want to upgrade everything at once?
Shop Complete LED Kit for 1994 Dodge Ram 2500How Long Do 1994 Dodge Ram 2500 Headlight Bulbs Last?
Standard halogen headlights on the 1994 Dodge Ram 2500 have an expected lifespan of 500 to 1,000 hours, which works out to roughly 2 to 3 years of normal use. Signs of a failing halogen bulb include noticeably dimmer output, a yellowish tint compared to the other headlight, or intermittent flickering. At 32 years old, the original bulbs on your Ram 2500 are likely overdue for replacement. Even if they still illuminate, reduced brightness significantly impacts nighttime safety. When one headlight burns out, replace both sides at the same time. Bulbs from the same batch age at similar rates, and mismatched brightness is distracting to oncoming drivers.
What Bulbs Are Compatible with the 1994 Dodge Ram 2500?
The 9004 low beam bulb on the 1994 Dodge Ram 2500 is a specific fitment. There are no widely recognized cross-compatible alternatives, so make sure to purchase the exact 9004 size. Using the wrong bulb size can cause improper beam patterns that reduce your visibility and blind other drivers. It can also cause overheating inside the headlight housing, potentially warping the plastic lens or reflector. Always verify the bulb number before purchasing.
1994 Dodge Ram 2500 Headlight FAQ
Did Dodge Ram 2500 Bulb Sizes Change Over the Years?
Over its production run from 1994 to 2010, the Dodge Ram 2500 has seen bulb size changes in the Low Beam, High Beam and Fog Light positions. The 1994 model uses the earlier bulb specification that was in place before the change around 2009. Always verify the exact bulb size for your specific 1994 model year using the chart above, as using the wrong size can result in poor fitment or reduced light output.
Other Ram 2500 Years
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Other Vehicles That Use 9004 LED Bulbs
These vehicles from other makes also use a 9004 LED low beam bulb: