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LED Headlight Bulbs & Conversion Kits

Upgrade factory halogen headlights with plug-and-play LED conversion kits built for brighter 6000K white output, lower power draw, and reliable fitment across cars, trucks, and SUVs. Shop CANbus-ready LED headlight bulbs, single-beam kits, dual-beam kits, and vehicle-specific replacements.

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With a 4.95 average rating across Google and Judge.me, Underground Lighting has earned the trust of drivers looking for dependable LED lighting upgrades. See why customers choose us for fitment support, quality products, fast shipping, and brighter lighting solutions for cars, trucks, and SUVs.

Plug-and-Play LED Headlight Conversion Kits & Bulbs

Underground Lighting's LED headlight conversion kits and LED headlight bulbs are designed to replace factory halogen headlamps in cars, SUVs, and trucks. 

These kits are backed by solid-state LED technology, in which light is generated by electroluminescence rather than fragile filaments or gas-based arc systems.

The LEDs used in these kits are built with SMD or high-power automotive-grade chips selected for compact size, controlled output, and stable beam performance. Typical systems deliver 6,000-12,000 lumens per pair while drawing around 40-60 watts of power, while producing a 6000K pure white color temperature that closely matches daylight.

This Underground Lighting collection covers the most widely used automotive bulb standards, so drivers can match the right kit to their existing headlight housing and vehicle fitment.

Common bulb-size options include:

For vehicles with electronic bulb monitoring , CANbus-compatible LED headlight kits help prevent dashboard errors, flicker, or shutdown after installation. Thermal stability is managed with integrated heat sinks or active cooling, which helps maintain beam consistency and protects high-output LED systems.

Within a full exterior lighting setup, LED headlight upgrades naturally connect with LED fog lights, LED turn signal bulbs, and anti-flicker CANbus modules. Compared to HID (xenon) systems, LEDs offer instant full brightness, longer service life, and simpler system design, while still requiring proper beam focus and aiming.

Popular applications include Jeep headlights, Ram 1500 headlights, 2014 Ram 1500 headlights, and 2014 Silverado headlights, where higher light output and vibration resistance are especially useful for daily driving, trucks, and rough-road conditions.

Not sure which LED headlight kit fits your car, truck, or SUV? Underground Lighting’s experts can help confirm the right bulb size, beam type, and CANbus compatibility for your vehicle.

Why Choose Underground Lighting LED Headlight Conversion Kits

  • 3–5× Higher Brightness Than Halogen Headlights

    Compared to standard halogen bulbs that typically produce around 1200–1500 lumens, Underground Lighting LED headlight kits offer much higher output, at 6000–12000 lumens per pair. Higher brightness improves forward visibility, enhances hazard awareness, and delivers the crisp, clean lighting performance drivers look for in a premium LED upgrade.

  • 25,000–50,000+ Hour Operating Lifespan

    Underground Lighting's LED headlight kits eliminate fragile filaments and deliver an operating lifespan of 25,000–50,000+ hours, far exceeding halogen (400–1,000 hours) and HID (2,000–3,000 hours) alternatives.

  • Instant Full Brightness With Zero Warm-Up

    Underground Lighting LED headlights reach full brightness instantly, unlike HID headlights, which take time to warm up. This provides faster visibility at night, in bad weather, and when using your headlights to signal.

  • Lower Power Draw With Higher Energy Efficiency

    Underground Lighting LED conversion kits operate at 40–60 watts per pair & consumes less power than traditional halogen or HID systems. While drawing less power, it also produces more usable light, reducing electrical system load without compromising performance.

  • High Durability for Trucks and Off-Road Use

    Underground Lighting LED bulbs are built with solid-state construction and no fragile filament. This makes them highly resistant to shock and vibration while enabling use in trucks, SUVs, and demanding off-road conditions.

  • Error-Free Plug-and-Play Compatibility

    Underground Lighting CANbus-compatible LED kits help prevent flicker and warning messages in modern vehicles, while plug-and-play connectors allow for straightforward DIY installation without permanent vehicle modifications.

How to Find Out Which Headlight Conversion Kit You Need

Finding the right LED headlight kit is easier when you match the bulb size, vehicle fitment, and electrical requirements before ordering.

1. Check your current headlight bulb size by removing the existing bulb and looking for the part number on its base. Common sizes include H11, 9005, and 9006.

2. Use the vehicle finder tool to confirm exact fitment for your make and model. If you cannot locate the bulb size, check the owner's manual under replacement bulbs or light specifications.

3. Choose the LED headlight kit that matches your vehicle, housing type, brightness needs, and CANbus requirements. Underground Lighting's fitment support can help confirm the right option before you order.

Watch these helpful Underground Lighting videos for step-by-step guidance, product details, and real-world installation tips.

Need Help Finding LED Headlight Bulbs for Your Vehicle?

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LED Headlight Bulbs FAQs

If you're on halogen now, a kit is the easy route. The important part is matching your original bulb size, housing, connector, and electrical system so the bulb actually fits and the beam behaves. Plenty of vehicles take plain plug-and-play bulbs and nothing else. A few are needier and want adapters, CANbus modules, or anti-flicker decoders before they'll cooperate.

Figure $80 to $250+ for a kit. The spread comes from bulb size, brightness, cooling design, CANbus support, anti-flicker tech, and how cooperative your vehicle is.

Basic plug-and-play bulbs are cheap. Higher-output kits and picky vehicle applications cost more. But the kit worth buying isn't the priciest or the flashiest. It's the one that fits your car right, keeps the beam clean, and doesn't leave you chasing flicker or dashboard warnings.

More than a halogen bulb swap, less than you might fear. You're paying for brighter light, lower power draw, and a longer lifespan. What tips the total one way or the other is your bulb size, beam type, output, and whether the car demands CANbus or anti-flicker parts.

Want a real number? Check your current bulb size first and sort out whether you need low beam, high beam, or dual-beam LEDs.

Depends where you live and how your headlights are built. The rules aren't the same everywhere.

Keep it clean, and you're usually fine: compatible housing, correct aim, and a beam that follows your local road-lighting laws. Where people get into trouble is with glare. A bulb that scatters light or throws an uncontrolled beam is the kind that draws attention. Not sure about your area? Look it up before you buy.

Often, yes. When the bulb size, connector, and housing space match up, the kit connects straight to the factory plug with no cutting and no splicing.

Not every car makes it that easy, though. Some need adapters, a little more room under the dust cover, or a CANbus module to run right.

Pull the halogen. Drop in the matching LED. Connect the driver or adapter. Test the lights before you seal the housing back up.

Two things to watch while you're in there. Get the LED chips lined up correctly, and make sure the bulb is seated tightly. If the beam comes out scattered, or it flickers, or a warning light pops on, you'll either need to reseat it or add a decoder.

That's down to your year, make, model, and beam position. The usual suspects are H11, H13, H7, H4, 9005, 9006, 9007, 9004, 9012, H1, and H3.

Read the number off the bulb you've got, check the manual, or run it through fitment support. And know going in whether it's a low beam, high beam, or dual-beam bulb.

Yes, when the fitment lines up. The LED has to match your factory bulb size, connector, housing space, and beam type. The thing people skip is alignment, and it's the thing that makes or breaks the result. Line it up, and you get more usable light without blinding oncoming traffic or ending up with a patchy beam.

No. There's no such thing as universal here.

Fit depends on bulb size, housing, rear clearance, dust cap space, connector type, and how closely your car watches its own electrical system. Some cars, trucks, and SUVs need CANbus-ready bulbs, anti-flicker modules, or adapters to behave. Check before you order, every time.

Wattage tells you the power draw. It does not tell you how good the light is.

Brightness, beam pattern, where the LED chips sit, cooling, housing fit, those are what decide how well you see the road. A modest-wattage bulb with a tidy beam will out-light a thirsty one that just spews glare everywhere.

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