These festoon LED bulbs deliver exceptional brightness and reliability across four common automotive lengths—31mm, 36mm, 39mm, and 41mm—making them perfect drop‑in replacements for dome, trunk, license plate, map, courtesy, and glove box lights in cars, trucks, RVs, and boats.
Each bulb contains a high‑efficiency COB (Chip On Board) LED array with multiple individual LED chips mounted closely together. This produces a uniform, glare‑free beam with 360° illumination, outperforming halogen or SMD-style LEDs with better light spread and consistency
Outlet power ratings typically range from 2.5 W to 5 W (often listed as C5W/C10W), yet run on a 12 V automotive system with low heat output and lower power draw . Most bulbs include constant-current IC drivers or CANBUS-ready circuitry, ensuring stable brightness, protecting materials, and avoiding dashboard error codes .
The bulbs are built for rugged automotive environments, with many models rated IP68 waterproof, featuring aluminium bodies or heat-sinking bases to aid cooling and extend lifespan. Working temperatures range from –45 °C to +105 °C, suitable for engine bays or external lighting.
Offered in bright white (~6000 K) color temperature, they dramatically enhance cabin illumination, license plate visibility, and trunk lighting—an excellent upgrade for technicians and DIY car modifiers .
Specifications
| Specification | Details |
|---|---|
| Length options | 31 mm, 36 mm, 39 mm, 41 mm |
| Bulb Type | Festoon (rigid tube with metal end caps) |
| LED Type | COB LED array (typically 6–12 LED chips) |
| Voltage | DC 12 V (some models support 12–24 V) |
| Power Consumption | ~2.5 W–5 W (C5W to C10W equivalent) |
| Color Temperature | ~6000 K (bright white) |
| Illumination Angle | 360° full coverage |
| Driver | Constant-current or CANBUS-compatible |
| Housing | Aluminum or PCB body with heat sink |
| Ingress Protection | Often IP68 waterproof |
| Operating Temp | –45 °C to +105 °C |
| Life Expectancy | Typically >30,000 hours |
| Certifications | CE, RoHS (varies by supplier) |
Automotive Applications
Dome/map lights
Trunk illumination
Glove box and courtesy lamps
License plate lamps (converting C5W festoons)
RV interior lighting
Utility and service vehicle compartments
These bulbs install directly into existing festoon sockets—no rewiring required. The included COB design delivers brighter, more uniform light with lower power draw and less heat compared to halogen or SMD LEDs. CANBUS versions avoid flickering or error messages often seen with standard LED replacements.
Key Selling Points
Wide fit compatibility across all four lengths
COB technology ensures smooth, glare-free illumination
Energy efficient with longer lifespan and minimal heat
CANBUS/IC driver reduces fault warnings and flicker
Waterproof builds suitable for outdoor or trunk use
Ideal for clean, modern upgrades in automotive environments
Satyendra –
Perfect for Baleno Dome Lights yellow halogen replacement. Good.