2020 Ram 1500 Bulb Sizes (Headlight, Tail, Fog)
AI-generated reference. Always verify torque values, fluid capacities, intervals, and procedures against the manufacturer's service manual or OEM repair information before performing work. Repairius is not liable for damage from acting on this content without verification.
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Quick reference
| Location | Bulb Size | Type |
|---|---|---|
| Low Beam (Halogen) | H11 | Halogen |
| Low Beam (LED/HID) | Integrated LED/HID (not user-serviceable) | |
| High Beam (Halogen) | 9005 | Halogen |
| High Beam (LED/HID) | Integrated LED/HID (not user-serviceable) | |
| Fog Light | H11 | Halogen |
| DRL (Halogen) | 7443 | Halogen (often integrated with turn signal) |
| DRL (LED) | Integrated LED | |
| Front Turn Signal | 7443NAK | Halogen (amber) |
| Rear Turn Signal | 7440 | Halogen (amber) |
| Brake Light | 7440 | Halogen |
| Tail Light | 7443 | Halogen (integrated with stop light in some configs) |
| Reverse Light | 7440 | Halogen |
| License Plate | 194 | Halogen |
| Front Side Marker | 194 | Halogen |
| Rear Side Marker | 194 | Halogen |
| Dome Light (Front) | 578 | Halogen |
| Dome Light (Rear) | 578 | Halogen |
| Map Light (Front) | 194 | Halogen |
| Map Light (Rear) | 194 | Halogen |
The 2020 Ram 1500 offers a variety of lighting configurations, primarily split between halogen and LED options across its different trim levels. Understanding which bulbs your specific truck uses is crucial for proper maintenance and upgrades. Base models typically feature full halogen lighting, while higher trims or optional packages include advanced LED or HID (High-Intensity Discharge) systems for headlights and some exterior lights.
For vehicles equipped with factory LED headlights, the low beam, high beam, and often the DRL functions are integrated LED units. This means there are no user-replaceable bulbs in the traditional sense; if an LED component fails, the entire headlamp assembly usually needs to be replaced. HID headlights, found in some upper trim levels, also typically have integrated HID projectors and DRLs, similar to the LED setups.
LED vs halogen upgrade considerations
Upgrading from halogen to LED bulbs in your 2020 Ram 1500 can significantly improve light output, modernize the look of your truck, and offer a longer lifespan. However, there are several important considerations to keep in mind:
- CANBUS Errors: Modern vehicles like the Ram 1500 use a Controller Area Network (CANBUS) system to monitor electrical circuits. LED bulbs draw less power than their halogen counterparts, which can trick the CANBUS system into thinking a bulb is out. This often results in "bulb out" warning messages on your dashboard or hyper-flashing turn signals. To prevent this, you
More specs for the 2020 Ram 1500
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Fuse Box Diagram & Amperage
Fuse box locations, layout, amps, and what each fuse controls.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2020 Ram 1500 Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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