{"product_id":"sealight-3157-switchback-led-bulbs-amber-white-dual-color-drl-turn-signal-anti-hyper-flash-2pc","title":"SEALIGHT 3157 Switchback LED Bulbs Amber\/White — Dual-Color DRL \u0026 Turn Signal, Anti-Hyper-Flash 2PC","description":"\u003cp\u003e\u003cstrong\u003eSEALIGHT 3157 Switchback LED Bulbs are dual-color amber\/white replacement lamps that act as parking\/DRL and turn signal lights, delivering crisp white for daytime running and clear amber for turn signaling with built-in anti-hyper-flash support.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese SEALIGHT 3157 switchback bulbs combine bright white and vivid amber LEDs in a single 2-piece set designed for vehicles that use a single bulb for both parking\/DRL and turn functions. Each lamp uses a dense array of modern 3030 LED chips behind a high-definition glass lens for stronger beam penetration and visible output. The bulbs are engineered for wide voltage tolerance, integrated driver control, and aluminum circuit boards to move heat away from the diodes for longer, stable operation.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these bulbs switch between parking\/DRL and turn signal modes?\u003c\/h3\u003e\n\u003cp\u003eThe bulbs automatically change color based on the vehicle circuit: white for parking or daytime running lights and amber when the turn signal is activated. They are built for dual-function sockets and detect the separate signals without manual switching.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDual-color design: white for DRL\/parking, amber for signaling.\u003c\/li\u003e\n  \u003cli\u003eCompatible with common 3157\/3057\/3457\/4157 sockets.\u003c\/li\u003e\n  \u003cli\u003ePlug-and-play wiring with no polarity to simplify installation.\u003c\/li\u003e\n  \u003cli\u003eIncludes resistors to help prevent hyper-flash on many vehicles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these bulbs cause hyper-flashing or error codes on my car?\u003c\/h3\u003e\n\u003cp\u003eThe bulbs feature an internal IC driver and are designed to minimize errors, but some vehicles with sensitive monitoring may still need added load. SEALIGHT includes 50W 6Ω resistors in the package for applications that require extra load to stop fast flash rates or to register correctly with the vehicle’s bulb-check system.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBuilt-in driver reduces false CAN-bus errors on many models.\u003c\/li\u003e\n  \u003cli\u003eResistors included to correct hyper-flash or non-blinking issues.\u003c\/li\u003e\n  \u003cli\u003eWorks best in dual-function lamp housings that combine DRL and turn signals.\u003c\/li\u003e\n  \u003cli\u003eMay require relay or different wiring on rare or European CAN-controlled systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance and durability features do these LEDs offer?\u003c\/h3\u003e\n\u003cp\u003eEach lamp packs 34 high-power 3030 LED chips for strong luminous output while keeping energy use low. The assembly uses an HD glass lens and an aluminum-backed PCB for improved heat dissipation and consistent light quality over time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e34 high-power 3030 LED chips per bulb for intense brightness.\u003c\/li\u003e\n  \u003cli\u003eHD glass lens for focused beam and better penetration.\u003c\/li\u003e\n  \u003cli\u003eAluminum circuit board for faster heat transfer and reliability.\u003c\/li\u003e\n  \u003cli\u003eWide 9–18V operating range with constant current driver inside.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and what sockets fit these bulbs?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward: these are plug-and-play for standard US sockets and do not require polarity-sensitive wiring. They fit a broad range of related sockets, making them a flexible upgrade for many vehicles that use a combined DRL\/turn bulb.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits sockets: 3157, 3157A, 3057, 3155, 3157NA, 3357, 3457, 3457A, 4057, 4114, 4157, and similar.\u003c\/li\u003e\n  \u003cli\u003eNo polarity design simplifies replacement and reduces installation errors.\u003c\/li\u003e\n  \u003cli\u003e2-piece set includes resistors for compatibility where needed.\u003c\/li\u003e\n  \u003cli\u003eSimple swap with factory bulbs in compatible dual-function housings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: drivers who want a single-bulb upgrade that provides crisp white for daytime visibility and bright amber for turn signaling, without changing housings or adding separate lamps. These bulbs are ideal for owners of vehicles that use a combined parking\/DRL and turn-signal socket and for installers seeking a plug-and-play LED option with included resistors for better compatibility. If your vehicle has separate bulbs for DRL and turn signals, or a highly specialized CAN-bus system, double-check fit and compatibility before purchase.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do these bulbs fit my 3157 socket?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — they are designed for 3157\/3057\/3457\/4157-style sockets and many related variants; check your vehicle uses a single dual-function bulb for DRL and turn signal.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will I need resistors to stop hyper-flash?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Possibly — SEALIGHT includes 50W 6Ω resistors for vehicles that need added load to prevent hyper-flash or to ensure proper blink rate.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"SEALIGHT","offers":[{"title":"Default Title","offer_id":55167725338967,"sku":"B0FHPRM44C","price":46.25,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/sealight-3157-front-view.jpg?v=1790392019","url":"https:\/\/britishgarage.co.uk\/products\/sealight-3157-switchback-led-bulbs-amber-white-dual-color-drl-turn-signal-anti-hyper-flash-2pc","provider":"British Garage","version":"1.0","type":"link"}