AUXITO 3157 Switchback LED Turn Signal Bulbs Pack of 2 — Dual Color White/Amber, 16×3030 Chips, HD Glass Lens

AUXITO 3157 Switchback LED bulbs deliver bright white for parking/DRL and clear amber for turn signals in one plug-and-play unit.

These dual-color 3157 (also fits 3057/3457/4157) LED bulbs use 16 high-power 3030 chips and an HD glass lens to produce focused light while keeping power draw low. Designed with an intelligent constant-current driver and an aluminum circuit board for heat management, they aim to replace factory halogens with a modern, more visible lighting solution for vehicles that use a single bulb for parking and turn functions.

How do these bulbs switch between white and amber on my car?

The AUXITO 3157 switchback bulbs are engineered for dual-function sockets that alternate colors based on which circuit is energized. When the parking/DRL circuit is active, the bulbs emit bright white; when the turn signal circuit is activated, they flash amber for clear signaling. They use an internal driver to control each color bank so the change is instantaneous and consistent.

• White output for daytime running lights or parking lights
• Amber output for turn signals with distinct amber-only flash
• Internal switching controlled by vehicle wiring — no external modules needed for basic operation

Will these LEDs work with my vehicle’s electrical system without errors?

AUXITO bulbs accept a wide 9V–18V DC input and include an intelligent constant-current IC to stabilize power and reduce interference with radios and digital electronics. However, some vehicles with low-resistance circuits or sensitive flashers may register hyper-flash or non-blink conditions. AUXITO supplies 50W 6Ω resistors in the package to correct hyper-flash, and an upgraded flasher relay is an alternative fix when required.

• Wide voltage tolerance (9V–18V) for stable performance
• Built-in driver reduces electrical noise and interference
• Included resistors for hyper-flash prevention if needed

How bright and durable are these 3030-chip LEDs compared to halogens?

Each 3157 switchback bulb uses 16 high-power 3030 LED chips paired with an HD glass lens to concentrate light and improve perceived brightness over stock halogen filaments. The LEDs run cooler and draw less current while delivering crisp white for DRL and vivid amber for turn signals. An aluminum circuit board and integrated thermal pathway help manage heat for longer life.

• 16 high-power 3030 LEDs for strong lumen output
• HD glass lens for focused beam and improved visibility
• Aluminum board and IC driver for heat dissipation and longevity

How easy is installation and what sockets are supported?

Installation is generally plug-and-play thanks to a non-polarity design compatible with many standard sockets. These bulbs fit a range of common dual-function sockets, making them a straightforward upgrade for vehicles that combine parking light and turn signal duties into a single lamp. For vehicles that require load correction, the included resistors or optional relay swap provide a quick solution.

• Non-polarity, plug-and-play for faster installation
• Compatible with 3157, 3057, 3457, 4157 and similar sockets
• Package includes resistors to help prevent hyper-flash

Who is this for: Drivers who want a modern, dual-function replacement for combined parking/turn lights will benefit from these AUXITO 3157 switchback LEDs. They suit car owners who prioritize a brighter, clearer signal and reduced power draw while retaining a simple install process. If your vehicle uses a single bulb for both parking/DRL and turn signals—and you’re comfortable adding the supplied resistors or swapping a relay if needed—these bulbs are an efficient, visible upgrade.