This set of 2 Tri-Color DE3175/DE3021 LED Festoon Bulbs (31mm/1.2") features a color-switching function that only works with a power outage interval of at least 5 seconds. Designed with CAN-BUS error-free technology, they offer direct plug-and-play functionality for most vehicles, ensuring hassle-free installation. Each bulb delivers up to 480 lumens—totaling 960 lumens for the set—with high light output, and operates on 9V ~ 14V DC with built-in current resistance. Non-polarized and free of UV or IR radiation, they cross-reference with models including DE3175, DE3021, DE3022, DE3023, 7065, 3021, 3022, 3175, 6428, 6430, etc, and more.
Ideal for upgrading OEM incandescent, halogen, or damaged lights, these bulbs work seamlessly with license plate, interior map, dome, stepwell, trunk, glove box, cargo area, door, step courtesy, luggage compartment, and rear reading lights—enhancing both visibility and safety. Backed by a full 1-year warranty against manufacturer defects, plus US-based professional technical support, they're a reliable choice for vehicle lighting upgrades.