3157 3057 3357 4157 Turn Signal White Yellow Amber

These Vouke 3157 switchback LED bulbs replace dual-filament front signal/parking lamps with bright white daytime running light and vivid amber turn signals in a standard 3157 socket (pair of 2).

Upgrade the front turn-signal and parking/DRL lamp assembly with a pair of high-output switchback LEDs that combine 22 high-power 5730 SMD chips per bulb — eleven white and eleven amber — to deliver clear white illumination for parking/DRL and a strong golden amber flash for signaling. The set is plug-and-play for standard 3157 bases (not CK type) and offers faster response and long life compared with incandescent bulbs. Before ordering, confirm your vehicle uses a dual-function 2-filament 3157-style socket rather than a CK-type or single-function lamp.

How do these bulbs improve daytime running lights and parking lights?

The Vouke 3157 switchback bulbs switch to pure white for parking or daytime running light duties, producing a brighter and cleaner appearance than factory halogens. They provide consistent white output for visibility while keeping energy use low and lifespan long.

• 11 white 5730 SMDs per bulb for crisp, xenon-like white light
• Lower energy draw than incandescent equivalents
• Long rated lifespan (50,000+ hours) for fewer replacements
• Plug-and-play installation for compatible 3157 sockets

What should I expect from the amber turn-signal performance?

When the turn signal is activated, the bulbs switch to the amber chips and flash in a clear on/off pattern to make signaling more noticeable. Because the amber SMDs are high-power 5730 chips, the flash appears brighter and more golden than typical dim amber LEDs.

• 11 amber 5730 SMDs per bulb for high-visibility signaling
• Distinct yellow-off-yellow flash pattern for clearer indication
• Faster on/off response than incandescent bulbs
• Vibration-resistant design suitable for road use

Will these LEDs fit my vehicle and are they easy to install?

These bulbs are built to fit standard 3157-style sockets and cross-reference many equivalent numbers (e.g., 3057, 3357, 4157). Installation is typically plug-and-play, but you must confirm your original lamp is dual-function (parking/DRL and turn signal in one bulb) and not a CK-type base.

• Standard 3157 base — compatible with many cross-reference numbers
• Simple plug-and-play replacement for dual-function sockets
• Not compatible with CK-type sockets — verify before purchase
• May require additional components if your vehicle hyper-flashes

Do I need resistors or a relay to prevent hyper-flashing?

Some vehicles detect the lower current draw of LEDs and trigger a rapid flash rate (hyper-flashing). If that occurs after installation, adding load resistors or swapping in an LED-compatible flasher relay will restore normal flash cadence.

• LEDs draw less current than incandescent bulbs, which can trip some relays
• Add 50W 6-Ohm load resistors per side to correct hyper-flashing
• Alternatively, replace the flasher relay with an LED-compatible unit
• Consult a technician if unsure about installation or vehicle wiring

Who this is for: These Vouke 3157 switchback LED bulbs are aimed at drivers who want a straightforward, visible upgrade for vehicles that use dual-function 3157-style sockets — particularly owners seeking brighter white parking/DRL light and far more noticeable amber turn signals without complex wiring. Avoid purchase if your vehicle uses a CK-type base or single-function lamps; in those cases the bulbs may not operate correctly.