212 211-2 212-2 Festoon LED Dome Map Interior Light bulbs (2 Pack)

Factory interior lighting is usually an afterthought—dim, yellow, and hot enough to melt plastic. Stop fumbling in the dark looking for dropped keys and upgrade your cabin with modern, crisp lighting that actually works.

High-Output 39mm-44mm LED Festoon Bulb Upgrade (211-2, 578, 562)

If you own an older American truck or SUV, you are intimately familiar with the shortcomings of the factory dome light. It uses an incandescent festoon bulb that produces a weak, candlelight-yellow glow (around 2700K). Worse yet, these bulbs run incredibly hot. It is not uncommon to see melted reflectors or heat-crazed plastic lenses in vehicles that have seen long-term use of standard halogen festoons. Plus, the filament design is prone to breaking from the vibrations of daily driving or door slamming.

This LED upgrade replaces that outdated technology with three high-power 5630 SMD chips. The 5630 chip is a heavy hitter in the LED world, offering significantly higher lumen output per watt compared to older 3528 or 5050 styling. This means you get 2-3 times the brightness of a standard chip without the dangerous heat output. The result is a flood of clean light that illuminates the footwells, map pockets, and center console, making your interior feel newer and far more functional.

Designed as a versatile "Festoon" replacement, these bulbs fit sockets ranging from 39mm to 44mm. This covers the vast majority of dome and map light housings found in domestic vehicles (Chevy, Ford, Dodge) that utilize the rigid-loop or glass-tube style connectors. The board design ensures the light is directed downward into the cabin where you need it, rather than being wasted inside the roof liner.

Why You Need This Upgrade

• Superior Visibility: Powered by 3x 5630 SMD chips, providing 2-3x the brightness of standard LEDs for reading maps or finding dropped items.
• Heat Reduction: LEDs run cool to the touch, protecting your factory light housings and lenses from heat damage and discoloration.
• Vibration Resistant: Solid-state construction means no fragile filaments to break when slamming doors or driving on rough roads.
• Versatile Fitment: The adjustable design fits a wide range of housings requiring 39mm to 44mm bulbs.
• Modern Aesthetic: Ditches the dingy yellow look for a crisp, clean output that modernizes the interior of older vehicles.

Installation Notes

Installation is simple but requires attention to polarity. These bulbs act like a diode and only flow electricity in one direction. If you plug the bulb in and it does not light up, remove it, flip it 180 degrees, and reinstall it. The metal contacts on the bulb are designed to snap into your factory spring clips. Ensure the clips are tight enough to hold the bulb securely; if the factory clips are loose from heat fatigue, pinch them slightly together before installing the new LED.

Replaces These OEM Part Numbers

This unit is compatible with any vehicle requiring a 39mm-44mm Festoon bulb, typically found in American domestic vehicles for Dome Lights and Map Lights. It directly replaces the following industry-standard bulb numbers:

211-2, 212-2, 214-2, 562, 570, 571, 578

Don't accept dim interior lighting. Swap in these 5630 SMD LEDs and see what you've been missing inside your own truck.