{"product_id":"ibrightstar-switchback-led-bulbs-3157-4157-pack-projector-lens-white-drl-and-amber-turn-signals","title":"iBrightstar Switchback LED Bulbs 3157\/4157 Pack — Projector Lens, White DRL and Amber Turn Signals","description":"\u003cstrong\u003eiBrightstar Switchback LED bulbs deliver bright xenon-white daytime running lights and clear amber turn signals in one plug-and-play replacement.\u003c\/strong\u003e\n\nThese dual-color projector LEDs replace common 3157-family sockets to upgrade parking lights, daytime running lights (DRL), and turn signals with a compact aluminum housing, integrated lens and high-efficiency SMD chips. Each bulb combines 72 SMD 3014 diodes for white lighting and 4 SMD 3030 diodes for amber, producing a sharp, modern beam while keeping power draw low and heat managed by the full aluminum body and constant-current driver.\n\n\u003ch3\u003eHow do these bulbs switch between white for DRL and amber for turn signals?\u003c\/h3\u003e\n\u003cp\u003eiBrightstar switchback bulbs use separate LED arrays inside a single cartridge: the white array runs when the parking\/DRL circuit is active, and the amber array lights for the turn signal circuit. The projector lens shapes each color into a focused beam so the lighting appears distinct and easy to read.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWhite: 72 SMD 3014 chips for bright, even parking\/DRL illumination.\u003c\/li\u003e\n  \u003cli\u003eAmber: 4 SMD 3030 chips produce vivid turn-signal flashes.\u003c\/li\u003e\n  \u003cli\u003eProjector lens concentrates output for better visibility and appearance.\u003c\/li\u003e\n  \u003cli\u003eBuilt-in constant-current IC for stable brightness and longer life.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these LEDs fit my vehicle and how do I install them?\u003c\/h3\u003e\n\u003cp\u003eThe bulbs are designed to replace many 3157-family sockets (3157, 4157, 3155, 3457 and related variants). Installation is plug-and-play in most applications: remove the old bulb, insert the iBrightstar unit and test each function. Before ordering, verify your socket type and compare physical dimensions to avoid fitment issues.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with 3157 3157A 3057 3155 3357 3457 4057 4114 4157 and similar sockets.\u003c\/li\u003e\n  \u003cli\u003eWorking voltage 9–24V (suitable for most 12V and 24V systems).\u003c\/li\u003e\n  \u003cli\u003eSimple twist-and-lock or bayonet replacement—no special tools required in most cars.\u003c\/li\u003e\n  \u003cli\u003eCheck clearance for lens housing and nearby components before final mounting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDo I need extra parts like resistors or relays to prevent hyper-flashing?\u003c\/h3\u003e\n\u003cp\u003eBecause these LEDs use much less power than standard incandescent bulbs, some vehicles will register a lower load and the flasher may hyper-flash or show a warning. In those cases adding a 50W 6-ohm load resistor per circuit or installing an LED-compatible flasher relay will restore correct flash rate and avoid dashboard warnings.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLower wattage may trigger hyper-flash on some vehicles.\u003c\/li\u003e\n  \u003cli\u003eRecommended solution: 50W 6-ohm load resistor or LED flasher relay per turn-signal circuit.\u003c\/li\u003e\n  \u003cli\u003eIf your vehicle shows a warning, consult an installer or vehicle manual before modifying electronics.\u003c\/li\u003e\n  \u003cli\u003eContact iBrightstar support for fitment or troubleshooting help.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance and longevity can I expect from these switchback LEDs?\u003c\/h3\u003e\n\u003cp\u003eEach bulb uses high-output SMD chips and an aluminum body for efficient heat dissipation, translating into strong light output and extended service life. Rated life is up to 30,000 hours under normal use; power consumption is low (about 3.5W white, 4W amber), which helps your vehicle electrical system and reduces draw compared with halogen alternatives.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOutput roughly 300% brighter than many stock halogen bulbs.\u003c\/li\u003e\n  \u003cli\u003eService life up to 30,000 hours with constant-current regulation.\u003c\/li\u003e\n  \u003cli\u003eLow power consumption: 3.5W for white, 4W for amber per bulb.\u003c\/li\u003e\n  \u003cli\u003eDurable aluminum housing improves heat management and longevity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\nWho is this for?\n\u003cp\u003eThis kit is aimed at drivers who want a modern, dual-color lighting upgrade for parking lights, DRLs and turn signals without major wiring changes. It’s a good match for car and truck owners who have compatible 3157-family sockets and want clearer, brighter signaling plus a cleaner aesthetic. If your vehicle is sensitive to LED loads, plan to add load resistors or an LED flasher relay for dependable operation. For questions about fitment or additional accessories, iBrightstar customer support is available to assist.\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: Will these bulbs fit my 3157 socket?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They fit many 3157-family sockets (3157, 4157, 3155, 3457 and similar). Verify your socket and physical measurements before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need resistors to stop hyper-flashing?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Some vehicles require a 50W 6-ohm load resistor or LED flasher relay to prevent hyper-flash or dashboard warnings.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"iBrightstar","offers":[{"title":"Default Title","offer_id":55164074426711,"sku":"B07JVHV7QB","price":32.86,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/ibrightstar-front-packaging-switchback-led-bulbs.jpg?v=1790349755","url":"https:\/\/britishgarage.co.uk\/products\/ibrightstar-switchback-led-bulbs-3157-4157-pack-projector-lens-white-drl-and-amber-turn-signals","provider":"British Garage","version":"1.0","type":"link"}