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T10 194 168 LED Bulbs

Shop Underground Lighting T10 LED bulbs for license plate, side marker, parking and interior lighting. Choos from 194, 168, and 158 replacements in multiple colors, including CANbus-compaetible options.
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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.

T10 / 194 / 168 LED Replacement Bulbs for Plate, Marker & Interior Lighting

The 194 bulb (T10 wedge base) is the most widely used T10 miniature automotive bulb (~3.8 W halogen), installed in license-plate lights, side markers, parking lights, interior dome/map lights, glove-box lights, dashboard illumination, and footwell lighting. Closely related variants include the 168 bulb (~5 W) and 158 bulb (~3 W), all sharing the same T10 wedge base with dual contact blades and fitting identical sockets across thousands of vehicle models.

  • Voltage: 12 V DC automotive
  • Halogen power: 3–5 W
  • LED power: 0.5–2 W
  • Brightness: 50–300 lumens
  • Base: T10 wedge (W5W / 2825 equivalent)
  • Chip types: 5050 SMD, 2835 SMD, COB
  • Beam: 360° radial + forward tip
  • CANbus: optional integrated resistor
  • Colors: 3000 K, 5000 K, 6000 K+, red, amber, blue, green

This collection upgrades standard 194/168/158 halogen bulbs to T10 LED replacements (0.5–2 W) using 5050 or 2835 SMD LED arrays with 360-degree illumination architecture. Compared with filament bulbs, T10 LEDs deliver 50–300 lumens output, sharper color rendering, lower heat, and 20,000–50,000-hour lifespan while maintaining plug-and-play compatibility with 12 V automotive wedge sockets.

The collection includes:

  • Ultra Bright 9-SMD T10 194 Wedge LED Bulbs – 360-Degree Illumination (2-Pack): A multi-directional T10 LED designed for uniform marker, dome, and interior illumination, available in multiple colors.
  • 13-SMD 5050 CANbus Error-Free T10 194/168/158 LED: A high-density LED with a focused forward beam, CANbus-compatible circuitry, and bright white output for plate and exterior lighting.

Primary Automotive Applications of T10 / 194 LED Bulbs

License Plate Light (Most Common 194 Use)

Rear plate illumination requires a white light output to support visibility and meet applicable DOT/ECE requirements. T10 / 194 LED upgrades provide clearer plate illumination with a cleaner, modern white appearance.

Side Marker & Position Lights

T10 / 194 bulbs are commonly used in amber or red constant-on exterior marker lights. LED replacements provide sharper color output, faster illumination, and a longer service life than traditional halogen bulbs.

Parking / Running Lights

These bulbs can be used for low-intensity front or rear parking and running lights. 360° LED designs help distribute light throughout reflector housings for a more even and uniform glow.

Interior Dome & Map Lights

Many vehicle cabins use T10 sockets for dome, map, and reading lights. LED bulbs can increase usable brightness while generating less heat around plastic lenses and interior trim.

Dashboard & Instrument Cluster

T10 / 194 bulbs are also used for backlighting gauges, instrument clusters, switches, and controls. Lower-lumen LED options can improve visibility while helping prevent excessive glare.

Glove Box / Footwell / Accent Lighting

The compact wedge design makes T10 / 194 LEDs suitable for glove boxes, footwells, courtesy lights, and other accent-lighting locations where installation space is limited.

194 vs. 168 vs. 158 Bulbs

  • 168: Approximately 4–6 watts and typically the brightest halogen option.
  • 194: Approximately 3.8 watts and commonly used across exterior and interior applications.
  • 158: Approximately 3 watts with a dimmer standard output.

All three use the same T10 wedge base and are often physically interchangeable. However, brightness, heat output, and vehicle requirements can differ, so confirm the original bulb number before ordering.

Why Choose Underground Lighting T10 194 LED Bulb Upgrades?

  • 2–5× Brighter Marker & Plate Illumination

    Underground Lighting T10 LED bulbs provide a clear, immediate output for license plate, marker, and interior applications, with selected models producing noticeably more light than standard halogen bulbs.

  • 360-Degree Light Distribution

    Selected Underground Lighting bulbs use side-emitting SMD LEDs to distribute light around the housing, supporting more even illumination in plate, marker, dome, and map-light applications.

  • 90 % Lower Power Consumption

    0.5–2 W LED draw reduces electrical load in always-on circuits such as parking and marker lights.
    This not only saves energy but also extends the life of your vehicle’s battery, making these bulbs a cost-effective and eco-friendly choice.

  • CANbus Error-Free Compatibility Options

    Selected Underground Lighting T10 bulbs include CANbus-compatible circuitry designed to help reduce flickering and dashboard bulb warnings in vehicles with monitored lighting systems.

  • Flicker-Free Performance & Cooler Operation Protects Lenses

    Low thermal output prevents lens yellowing or housing deformation common with halogen T10 bulbs and Underground Lighting’s bulbs are equipped with advanced SMD CSP chips that eliminate flickering, ensuring a stable and consistent light output.

  • Easy Plug & Play Installation

    Underground Lighting 194, 168 and 158 LED bulbs use a standard T10 wedge base, allowing straightforward installation in compatible vehicle sockets without permanent wiring modifications.

How to Choose the Right T10, 194, 168, or 158 LED Bulb

Confirm the original bulb size first, then choose the replacement based on the lighting position, brightness, color, housing space, and vehicle electrical system.

  • Check fitment: Verify T10, 194, 168, or 158 using the original bulb, owner’s manual, or Vehicle Search Tool.
  • Choose the right brightness: Lower output suits dashboards, while brighter bulbs work better for compatible license plate, dome, map, or marker lights.
  • Match the color: Use the color required for the lighting position and lens.
  • Consider light distribution: 360-degree LEDs suit reflector housings, while forward-facing designs work better for direct-light applications.
  • Check CANBus needs: Some vehicles may require resistor-equipped bulbs to reduce flicker or warning messages.
  • Confirm housing clearance: Make sure the LED fits behind the lens or cover.
  • Check polarity: If the bulb does not light, rotate it 180° and reinstall it where the socket design allows.

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

Use our Vehicle Search Tool & find out if your vehicle is compatible with our LED & HID interior & exterior car lights!

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194/168/158/T10 LED bulbs FAQs

Compatibility depends on the factory bulb number, socket type, and lighting position. T10, 194, 168, and 158 bulbs use the same general wedge-style socket in many vehicles, but the correct replacement should still match the original bulb specification and application. Check the owner’s manual, inspect the existing bulb number, or use a vehicle-specific Bulb Finder before ordering.

They can in some vehicles. LED bulbs draw less current than incandescent bulbs, and certain vehicle electrical systems may respond with flickering, bulb-out warnings, or other errors. A CANbus-compatible T10 LED with integrated resistance can help reduce these issues, although compatibility varies by vehicle.

T10, 194, and 168 LED bulbs typically cost around $10 to $30 per pair, depending on brightness, LED chip design, color, CANbus compatibility, built-in load resistance, construction quality, and quantity. Basic replacement bulbs are generally less expensive, while higher-output or CANbus-ready models usually cost more.

Yes, most T10 LED bulbs use a plug-and-play wedge base and can be installed without additional wiring. Remove the original bulb and insert the LED firmly into the compatible socket. If a polarity-sensitive LED does not illuminate, remove it, rotate it 180 degrees, and reinstall it.

Quality T10 LED bulbs can last significantly longer than traditional incandescent bulbs, but actual service life depends on heat management, electrical conditions, vibration, component quality, and usage. Well-designed automotive LEDs commonly offer many thousands of hours of service when operated within their intended application.

They commonly share the same T10 wedge-style base and can physically fit many of the same sockets, but their original incandescent wattage and brightness specifications differ. A replacement LED should be selected according to the vehicle application rather than assuming every 194, 168, and 158 bulb is functionally identical.

T10, 194, and 168 LED bulbs typically cost around $10 to $30 per pair, depending on brightness, LED chip design, color, CANbus compatibility, built-in load resistance, construction quality, and quantity. Basic replacement bulbs are generally less expensive, while higher-output or CANbus-ready models usually cost more.

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