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 5-SMD T10 194 LED (360°)
Multi-directional T10 LED using 5-SMD architecture for uniform marker, dome, and interior illumination.
Available colors: white, amber, blue, red, green.
- 18-SMD-5050 CANbus Error-Free T10 194/168/2825 LED
High-density 360° T10 LED with built-in load resistors to prevent bulb-out warnings in CANbus-monitored circuits.
Output: 6000 K white optimized for plate and exterior lighting.
Primary Automotive Applications of T10 / 194 LED Bulbs
1. License Plate Light (Most Common 194 Use)
Rear plate illumination requiring white output per DOT/ECE regulations. LED upgrades provide clearer plate visibility and modern white tone.
2. Side Marker & Position Lights
Amber/red constant-on exterior lights improving vehicle visibility. LED produces sharper color and longer lifespan than halogen.
3. Parking / Running Lights
Low-intensity front or rear marker lighting. 360° LEDs fill reflector housings evenly for uniform glow.
4. Interior Dome & Map Lights
Cabin illumination zones using T10 sockets. LED increases brightness and reduces heat in plastic lenses.
5. Dashboard & Instrument Cluster
Backlighting for gauges and switches. Lower-lumen LEDs maintain readability without glare.
6. Glove Box / Footwell / Accent Lighting
Small utility or styling lights where compact wedge LEDs fit tight housings.
194 vs 168 vs 158 — Output & Interchangeability
- 168: ~5 W halogen — brightest T10
- 194: ~3.8 W — standard
- 158: ~3 W — dimmer
All share the same T10 wedge base and are interchangeable physically; LED replacements typically cover all three.
