{"product_id":"sealight-921-912-t15-led-reverse-light-bulbs-6500k-white-canbus-error-free-2-pack","title":"SEALIGHT 921\/912 T15 LED Reverse Light Bulbs 6500K White, Canbus Error-Free, 2-Pack","description":"\u003cstrong\u003eSEALIGHT’s 2026 921\/912 T15 LED bulbs are plug-and-play, 6500K reverse lights that deliver dramatically brighter, CAN-BUS compatible illumination for backup and auxiliary lighting.\u003c\/strong\u003e\n\n\u003cp\u003eThese SEALIGHT 921 (also fits 912, 922, 906, 904, 916 W16W) LED bulbs upgrade factory halogen reverse lights with 24 high-output 2835 SMD chips arranged for a 360° beam and a cool white 6500K color temperature. Built-in CAN-BUS electronics and a constant-current IC reduce error codes, flicker and radio interference while aviation-grade aluminum construction manages heat for long life. The bulbs are non-polarity and designed for simple plug-and-play replacement in most vehicles.\u003c\/p\u003e\n\n\u003ch3\u003eHow much brighter are these bulbs compared with stock halogen reverse lights?\u003c\/h3\u003e\n\u003cp\u003eThese LEDs produce a substantially higher lumen output than typical halogen 921 bulbs — SEALIGHT rates them at roughly 700% brighter. The combination of 24 SMD chips and a lens that evenly spreads light yields better visibility when reversing and makes tails of your vehicle easier to see in poor conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e24 x 2835 SMD chips for high luminous density\u003c\/li\u003e\n  \u003cli\u003e360° emission pattern for wide coverage\u003c\/li\u003e\n  \u003cli\u003eLens-enhanced beam for improved light utilization\u003c\/li\u003e\n  \u003cli\u003e6500K cool white color for crisp contrast\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these bulbs trigger dashboard errors or flicker on modern vehicles?\u003c\/h3\u003e\n\u003cp\u003eSEALIGHT included CAN-BUS electronics in these bulbs to prevent most bulb-failure warnings, hyper-flashing and radio interference on compatible systems. While designed to work with the majority of vehicle computers, some older or specialized ECUs may still require resistors or adapters for absolute compatibility.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOn-board CAN-BUS circuitry reduces error messages\u003c\/li\u003e\n  \u003cli\u003eDesigned to minimize over-flash and flicker\u003c\/li\u003e\n  \u003cli\u003eCompatible with roughly 99% of vehicle wiring systems\u003c\/li\u003e\n  \u003cli\u003eOptional resistors may be needed for a few models\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow durable are these LEDs and what keeps them cool?\u003c\/h3\u003e\n\u003cp\u003eDurability comes from an aviation-grade aluminum body and immersion-gold plated contacts that resist oxidation and conduct heat efficiently. A constant-current IC stabilizes performance and reduces thermal stress, which helps the bulbs reach up to an estimated 60,000-hour life span under normal use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAviation-grade aluminum housing for heat dissipation\u003c\/li\u003e\n  \u003cli\u003eImmersion gold plugs for corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eBuilt-in constant-current IC for steady output\u003c\/li\u003e\n  \u003cli\u003eEstimated service life up to 60,000 hours\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and which sockets does this replace?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward: these LEDs are non-polarity and made in a 1:1 footprint to match halogen 921\/912 bulbs, so you typically only need to pull the old bulb and install the new one. They directly replace 921, 912, 922, 906, 904, 916 and W16W\/T15 sockets used for reverse, backup and auxiliary lights.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNon-polarity design eliminates wiring polarity concerns\u003c\/li\u003e\n  \u003cli\u003ePlug-and-play fit for common T15 socket types\u003c\/li\u003e\n  \u003cli\u003eWorks for reverse lights, backup lights, and 3rd brake applications\u003c\/li\u003e\n  \u003cli\u003eNo tools or wiring modifications usually required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Drivers who want a straightforward, long-lasting upgrade to their vehicle’s reverse or backup lighting will appreciate SEALIGHT’s 921\/912 T15 LEDs. They suit owners replacing dim or aging halogens, anyone needing a whiter, more visible reverse beam for safety and convenience, and DIYers who prefer a simple plug-and-play swap with CAN-BUS compatibility for modern cars.\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: Are these bulbs polarity sensitive?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. SEALIGHT 921\/912 T15 LEDs are non-polarity, so they install either direction in compatible sockets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will they cause a bulb error on my dashboard?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Most vehicles won’t show errors thanks to on-board CAN-BUS circuitry, though a few models may need resistors for full compatibility.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"SEALIGHT","offers":[{"title":"Default Title","offer_id":55162538230103,"sku":"B0GGB1HKCP","price":29.51,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/sealight-front-packaging-921-led-bulbs.jpg?v=1790337210","url":"https:\/\/britishgarage.co.uk\/products\/sealight-921-912-t15-led-reverse-light-bulbs-6500k-white-canbus-error-free-2-pack","provider":"British Garage","version":"1.0","type":"link"}