SEALIGHT® SLJ3 3157/3156/3057 LED Turn Signal Lights and DRL Bulbs 30W 3200LM Amber/White Switchback 2PCS

SEALIGHT SLJ3 Series Switchback LED Turn Signal & DRL Bulbs

Be Seen Clearly. Signal with Confidence.

Why LED Turn Signals & DRL Matter?

Conventional halogen bulbs often appear dim and slow to respond, making your vehicle harder to notice in traffic — especially in bad weather.

Switchback LED bulbs combine bright white daytime running lights with instant amber turn signals, ensuring your vehicle is seen early and your intentions are clearly communicated when it matters most.

LED vs Halogen: The Difference You Can See Instantly 

Why Choose Sealight SLJ3 Series Switchback LED Turn Signal & DRL Bulbs? 

Anti Hyper Flash
The Sealight J3 Pro Max series is equipped with the latest J3 intelligent driver and built-in resistor, which can solve the super flash problem of 99% of vehicles. No need to purchase extra load resistors and crack circuits. Our engineers spent two years developing flagship signal lights based on customer feedback.

Engineered Through Three Generations of Innovation

The Sealight J3 represents the pinnacle of three generations of innovation. From GEN.1 to GEN.3, each upgrade brings brighter illumination and more advanced SMD chip technology. The latest J3 features 36 cutting-edge SMD chips, delivering up to 1500% brightness, ensuring exceptional visibility and safety in any driving condition. This is not just a performance upgrade—it’s Sealight’s commitment to innovation, quality, and ultimate driving confidence.

Built for All Weather. Reliable in Any Condition.
The J3 Pro Max series products are made of 6063 aviation grade aluminum as a whole. The base adopts a hollow design and is equipped with a 15000 rpm turbine fan on the top, with an intelligent temperature control system. The multi-layer temperature treatment design keeps the light bulb at a reasonable temperature and extends its lifespan. Powered by intelligent J3 drivers and precision engineering, this latest generation is built to perform reliably in demanding conditions, mile after mile.

Installation Instruction
Compatible with 3156 3056 3356 3456 4156 3047 3157 3157A 3057 3155 3157NA 4157, T25.etc. Please verify your vehicle's bulb size before purchase.
If you have any questions about installation or fitment, feel free to reach out to our customer support team — we’re always happy to help.

Pay Once, Save for Years. Stop the Replacement Cycle.

Why keep replacing halogen bulbs? The math is simple. Standard halogens offer a short lifespan, leading to frequent replacements over time. Sealight SLJ3 LED bulbs are built to last significantly longer, helping reduce replacement costs year after year. Upgrade once and enjoy reliable lighting for the long run.

Confidence Backed by Real Drivers

FAQs

Q1. How do these switch between white and amber?

A1. The white chips run on the parking or DRL feed and the amber chips take the turn feed, then it returns to white once the signal stops.

Q2. Will they work on a truck with separate amber turn lamps?

A2. No. A switchback needs one holder carrying both parking and turn feeds; where the truck has its own amber turn lamp, this bulb gives only one function.

Q3. Will they cause hyper flash?

A3. Rarely, since the built-in resistor gives the flasher the 30W it expects. If the rate still runs fast or a bulb-out message shows, support ships a free decoder.

Q4. Does a 3156 holder work?

A4. It seats, because 3156, 3057 and T25 share the same wedge base, but a 3156 holder carries one live contact, so only one colour will light.

Q5. What happens if the two feeds are swapped?

A5. No damage follows, because the driver is non-polarity, but the colours swap: the amber would sit on the DRL feed. Swap the two contacts back rather than leaving it that way.