The design is similar to traditional halogen lamps, with a 360-degree luminous wick. It offers sufficient power without false labeling. Multiple voltage ranges are available.
It utilizes a constant-current IC power supply with a linear constant-current design and complies with CE and RHOS certifications.
T15 W16w Led Bulb Applications:
Suitable for small vehicles, trucks, buses, and other automobiles.
Used in car reading lights, dome lights, trunk lights, license plate lights, and marine indicator lights.
Lighting Unit: The cylindrical lamp base at the front houses multiple high-quality square LED chips, emitting cool white light.
This multi-chip design ensures high brightness and uniform illumination.
Heat Dissipation Design: The silver-gray metal sleeve in the center is crucial. The heat generated by the LED during operation acts as a heat sink,
effectively dissipating the heat and significantly extending the life of the LED chip. This is the hallmark design of a high-quality LED bulb.
Lamp Base/Connector: The flat brass pin at the rear is the core feature of the T15/921 W16w LED Bulbs. It features two distinct metal contacts and a solder point.
This dual-contact design enables different functions (see below for details).
Electrical Characteristics:
Operating Voltage: Like the T10 bulb you mentioned earlier, the T15/921 W16w LED Bulb is available in two specifications: 12V (for cars, SUVs, etc.)
and 24V (for trucks, buses, etc.). Please select the appropriate voltage based on your vehicle's voltage.
Power and Brightness: Although designed to replace traditional 21W halogen bulbs,
LED versions typically consume only 2W-3W of power while providing brightness far exceeding that of the original halogen bulb.
Function and Application:
The most common use of the T15 LED Bulb is as a high-mounted brake light (third brake light).
It is also commonly used as a reverse light, its bright white light effectively illuminating the area behind the vehicle.
It is also sometimes used in the rear fog lights of certain models.
How T15 LED Bulb works: Its dual-contact design allows it to connect to two independent circuits. For example,
a high-mounted stop light might have one circuit connected to the brake signal and another to the width indicator signal,
thus achieving dual brightness (low brightness for the width indicator and extremely high brightness when braking).
Main Advantages of T15 W16w Led Bulb:
Ultra-High Brightness & Instant Response: As a brake or reverse light, its instantaneous illumination provides a quicker warning to vehicles behind you, enhancing safety.
Extremely Long Lifespan: LEDs are rugged and resistant to burnout, with a lifespan of tens of thousands of hours, far exceeding that of halogen bulbs.
Energy Efficiency: Significantly reduces the load on the vehicle's electrical system.
Excellent Heat Dissipation: The metal heat sink shown in the image ensures stable and long-lasting performance.
The product in the image is a high-quality T15/921 W16w Bulb, primarily used for high-mounted stop lights and reverse lights.
If you need to purchase or replace: Verify that your vehicle's original bulb model is "921" or "T15" (usually printed on the base of the original halogen bulb).
Also, check whether your vehicle has a 12V or 24V electrical system.
Installation Notes: Installation is very simple. Typically, you simply unplug the old bulb and plug in the new one. However,
due to the dual-point contact, there's no direction to insert the T15 LED Bulb.
Why Choose Zhishan Lighting?
Integrated R&D, Manufacturing & Sales – Full in-house control ensures stable quality and continuous product innovation.
Specialized in Automotive & Low-Voltage LED Solutions – Proven expertise across vehicle, marine, and specialty lighting applications.
Strict Quality Control System – Every product undergoes performance and aging tests to guarantee reliability and consistency.
OEM & Customization Capability – Flexible design, voltage, brightness, packaging, and branding solutions to meet diverse market needs.
Global Supply Experience – Supporting distributors, wholesalers, and project clients worldwide with stable production capacity.
Partner with Zhishan Lighting for Reliable LED Solutions
From high-quality products to customized OEM service — contact us today for pricing, samples, and bulk orders.
Application:
Suitable for small vehicles, trucks, buses, and other vehicles. Used for car reading lights, dome lights, trunk lights, license plate lights, and marine indicator lights.
