This lamp features an aluminum heat sink and a design similar to traditional halogen lamps, with a 360-degree luminous wick. It also has a glass shade and is IP66 waterproof.
It offers sufficient power without false claims. It's available in multiple voltage ranges.
It utilizes a constant-current IC power supply with a wide-voltage drive design and is CE and RHOS certified.
3157 Bi-color LED Bulb. This is a standard model very common in automotive lighting, known for its dual-color functionality, often used to integrate brake and turn signal functions.
Key Features and Details
● Model: 3157. This is an industry-standard number that ensures compatibility with corresponding automotive lamp sockets.
● Type: Bi-color LED. This means that two different colored LED chips are integrated into a single bulb, enabling dual functions.
Appearance and Structure:
● Lamp Head: Cylindrical design with a dense array of LED chips.
● LED Chip: Clearly visible dual colors.
- White/Yellowish Chip: Typically the brighter main light source, used for brake or side marker functions.
- Orange Chip: Used for turn signal functions.
● Base/Connector: Made of silver-gray metal, typical of automotive bulb connectors. One of the bulbs shows its flat metal connector and two slender metal pins, which are the standard pin design for the 3157 model.
● Operating Voltage: "12VDC" is clearly printed on the base, indicating that it operates at 12 volts DC, making it fully compatible with the circuit systems of most cars, SUVs, and other vehicles.
Main Functions and Applications:
● This dual-color bulb is typically used in rear combination lights.
- Low-brightness mode (possibly emitted by the white chip): Serves as a width indicator light (nighttime running light).
- High-brightness mode (possibly emitted by the full-on white chip): Serves as a brake light.
- Flashing mode (emitted by the orange chip): Serves as a turn signal light.
● Common Application Location: Rear taillight assembly (especially US-spec vehicles).
Advantages:
● Functional Integration: One bulb replaces the functions of two traditional single-color bulbs, saving space and wiring.
● LED Advantages: Compared to traditional halogen bulbs, they offer lower energy consumption, longer lifespan, and faster response (no delay in lighting and shutting off).
● Aesthetics: LEDs offer a more uniform and modern lighting effect.
The 12V 3157 bi-color LED bulb is an ideal upgrade or replacement for your car's rear taillights (brake/turn/width indicator). Its bi-color LED chip design and standard connector ensure seamless functionality and easy installation.
Application:
Used for tail lights, brake lights, reverse lights, turn signals, side marker lights, tail lights, brake lights, backup lights and interior bulbs on cars, trucks, SUVs, vans, motorcycles, scooters and recreational vehicles on trailers. Recreational vehicles, boats, mariners and more.
