The TecUpdater 66 SMD (4014 Chip) Dual-Color LED Turn Signal Bulb is a premium lighting upgrade for car owners who demand brightness, safety, and versatility in their vehicle’s lighting system. Designed with 66 ultra-bright 4014 SMD LEDs, this bulb not only delivers outstanding illumination but also adds modern functionality by converting non-DRL cars into Daytime Running Light (DRL) equipped vehicles.

Unlike ordinary LED indicator bulbs, this advanced switchback design allows the bulb to serve two roles in one—providing White DRL output during regular driving and instantly switching to Amber output when the turn signal is activated. Once the turn signal cycle ends, the white DRL reactivates automatically. This intelligent switching ensures crystal-clear signaling and a stylish appearance on the road.

Dual-Color Switchback Technology

• White DRL Mode (4.2W power): Functions as a bright, crisp white light during daytime driving, enhancing your car’s visibility to oncoming traffic and giving your vehicle a premium look.

• Amber Turn Signal Mode (25.2W power): Produces a highly visible amber flash that complies with automotive standards, ensuring your signals are seen clearly in all driving conditions.

• Automatic Switchback: The system disables the white DRL the moment the turn signal is engaged, eliminating any confusion for other drivers. Once the turn signal stops, the DRL resumes automatically.

This technology not only improves safety but also offers a sleek, high-end aesthetic similar to OEM DRL-equipped vehicles.

Connector Variants for Maximum Compatibility

To meet the needs of different vehicles, this dual-color LED bulb is available in two major connector types:

• PY21W / BAU15S / 1156 – Commonly used in European and Indian vehicles for front turn signals.

• T20 / 7440 / W21W – A widely used connector type for Japanese and American cars.

Both versions are plug-and-play, requiring no major modifications for turn signal replacement. The DRL function is activated with simple wire tapping, where the provided wire connects to an ignition or DRL power source. No cutting or complex rewiring is needed, making installation straightforward for professionals and DIY enthusiasts alike.

CANBUS Error-Free Operation

Many aftermarket LED bulbs cause hyper-flashing, dashboard error codes, or bulb-out warnings due to lower resistance compared to halogen bulbs. TecUpdater eliminates these issues with built-in CANBUS resistors, ensuring error-free performance on most cars and SUVs. This allows seamless integration without needing external decoders or load resistors.

Superior Brightness & Build Quality

• 66 High-Intensity 4014 SMD Chips deliver unmatched brightness, making your DRLs and turn signals stand out even in daylight.

• 360° Wide Beam Pattern ensures uniform light distribution with no dark spots or blind areas.

• Aluminum Body Construction enhances heat dissipation, keeping the LEDs cool for stable performance.

• Extended Lifespan of over 30,000 hours, ensuring durability for long-term use.

By combining high lumen output with efficiency, the TecUpdater dual-color LED bulb consumes less power than halogen alternatives while delivering significantly more light.

Technical Specifications

• LED Chip Type: 4014 SMD × 66

• Voltage Range: 12V DC

• Power Consumption: 4.2W (White DRL), 25.2W (Amber Turn Signal)

• Color Options: White (6000K) DRL, Amber (Yellow) Turn Signal

• Socket Compatibility: PY21W / BAU15S / 1156, T20 / 7440 / W21W

• Lighting Angle: 360° full coverage

• CANBUS Support: Yes, error-free on most vehicles

• Installation: Plug-and-play with additional wire tapping for DRL activation

• Material: Aluminum housing + high-efficiency PCB

• Lifespan: 30,000+ hours

Applications

• White DRL Mode: Converts cars without DRLs into DRL-equipped vehicles, enhancing safety and road presence.

• Amber Turn Signal Mode: Provides reliable, high-visibility flashing for front indicators.

• Custom Wiring Projects: Can be used in automotive modifications, off-road builds, or retrofits for enthusiasts looking to add modern lighting technology to older cars.

Why Choose TecUpdater Dual-Color LED Bulbs?

At TecUpdater, we specialize in providing automotive-grade lighting solutions engineered for performance, compatibility, and long-term reliability. Unlike generic LEDs, our bulbs are tested under real-world driving conditions to minimize failure rates and ensure consistent output.

With the 66 SMD Dual-Color LED Turn Signal Bulb, you’re not just replacing a halogen indicator—you’re adding DRL functionality, improving safety, upgrading style, and ensuring your vehicle stays error-free on modern CANBUS systems.