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

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

These 3157/3057/4157-compatible switchback LEDs are engineered to replace dual-function parking and turn-signal bulbs without rewiring. Each bulb uses 16 high-power 3030 LED chips and an HD glass lens to concentrate light while keeping power draw low. Built-in constant-current electronics and an aluminum circuit board manage heat and electrical stability across a wide 9–18V input range, making them suitable for most cars, trucks, and SUVs that accept 3157-style sockets.

How do these AUXITO bulbs switch between white and amber?

The bulbs are designed for dual-function housings that use one filament for parking/DRL and the other for turn signals. When the parking light circuit is powered, the LEDs emit bright white; when the turn signal circuit activates, they switch to amber and flash. AUXITO’s switchback pattern intentionally flashes amber-off-amber to maximize visibility and avoid the confusing amber-white alternating flash some other products produce.

• Dual-color operation: white for DRL/parking, amber for turn signal
• Distinct amber-off-amber flash pattern for clearer signaling
• Compatible with standard 3157-family sockets

Will installation require extra parts or technical changes?

Installation is plug-and-play for most vehicles thanks to a non-polarity design and standard 3157-fitment. However, because many modern cars monitor bulb load, you may encounter hyper-flash or a no-blink condition. AUXITO includes 50W 6-ohm load resistors in the package to correct hyper-flash, and in some cases an upgraded flasher relay may be recommended.

• Non-polarity plug-and-play for 3157, 3057, 3457, 4157 sockets
• Included load resistors to prevent hyper-flash where needed
• May require relay upgrade for certain vehicle monitors

How bright and reliable are the 3030 LED chipsets used by AUXITO?

Each bulb contains sixteen 3030 high-power LEDs that provide a balance of brightness and energy efficiency. The HD glass lens focuses output for improved penetration and a cleaner light pattern, while the aluminum circuit board and intelligent constant-current IC help control heat and keep the LEDs operating stably across voltage variations. These design choices improve longevity and reduce the chance of interference with radios or vehicle electronics.

• 16 high-power 3030 LED chips per bulb for robust light output
• HD glass lens for focused beam and improved visibility
• Aluminum circuit board + IC driver for heat dissipation and electrical stability

Which vehicles and sockets are these AUXITO switchback LEDs compatible with?

The bulbs are made to fit a broad range of 3157-style sockets, covering many passenger cars and light trucks that use a single bulb for parking and turn functions. Check your vehicle’s owner manual or existing bulb code to confirm fitment; the package lists common compatible socket numbers. Because the bulbs perform two functions from the same unit, they’re intended only for housings wired for dual-function bulbs.

• Fits: 3157, 3157A, 3057, 3155, 3157NA, 3357, 3457, 3457A, 4057, 4114, 4157
• Best for dual-function parking + turn signal housings
• Verify bulb code before purchase to ensure compatibility

Who is this for: Drivers who want a clean, modern look and clearer signaling from their parking lights and turn signals without complex wiring. These AUXITO 3157 switchback LEDs suit DIY installers who need plug-and-play replacement with included resistors, fleet owners seeking durable, low-power lighting, and owners of vehicles that use the 3157 family of sockets who want dependable white DRL/parking light performance and attention-grabbing amber turn signals.