{"product_id":"lucas-lighting-m-3157w-3157-white-led-bulbs","title":"M-3157W Lucas Lighting 3157 High Output CANBUS White LED Bulbs – Pair","description":"\u003ch2\u003e\n\u003cmeta charset=\"UTF-8\"\u003eLucas Lighting 3157 High Output CANBUS White LED Bulbs – Pair\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eUpgrade your vehicle's factory 3157 lighting with the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eLucas Lighting M-3157W High Output CANBUS White LED Bulbs\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. Designed as a direct replacement for compatible 3157-style halogen bulbs, the M-3157W delivers brighter, instant-on LED performance while maintaining the dual-output operation of the original bulb.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe M-3157W uses a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ewhite LED output\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e and is designed for applications including \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ereverse lights, brake lights, and marker lights\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. Its dual-output design provides a lower-output running mode and a higher-output safety mode for functions such as braking.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eLucas Lighting's M-Series uses fewer but higher-power LED chipsets positioned as closely as possible to the original halogen bulb filaments. This approach is designed to optimize the LED light-source position within the factory housing for a more appropriate lighting pattern.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe M-Series also incorporates Lucas Lighting's newest CANBUS technology, which Lucas states provides compatibility with greater than 90% of vehicles without bulb-out errors or fast-blinking issues. The M-3157W is sold as a pair of two bulbs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003e3157 High-Output LED Bulbs\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Direct replacement design for compatible 3157 applications\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eWhite LED Output\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Designed for reverse, brake, and marker applications\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eDual-Output Design\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Lower output in running mode and higher output in safety-function mode\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eHigh-Power LED Chipsets\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Uses fewer, higher-power LED chipsets\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eOptimized LED Positioning\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Chipsets are positioned close to the original bulb filament location\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eAdvanced CANBUS Technology\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Lucas states greater than 90% vehicle compatibility without bulb-out errors or fast blinking issues\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eInstant-On LED Response\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Provides immediate illumination compared with traditional halogen bulbs\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eDirect Replacement\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Designed for compatible 3157-style sockets\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eM-Series Construction\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Lucas Lighting's high-output automotive LED bulb platform\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eSold as a Pair\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Includes two bulbs\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eWhite 3157 LED Bulb for Reverse, Brake \u0026amp; Marker Lights\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eM-3157W\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is the white version of Lucas Lighting's M-Series 3157 bulb.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eLucas specifically lists the white version for:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003eReverse lights\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBrake lights\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMarker lights\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis makes the M-3157W a versatile option when a vehicle uses a 3157-style dual-output bulb in one of these applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFor front turn-signal applications requiring a white running light that changes to amber when signaling, the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eM-3157SB Switchback\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is the appropriate M-Series version rather than the M-3157W.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eHigh-Output M-Series LED Technology\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe M-Series is designed around more than simply adding additional LED chips.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eLucas Lighting uses \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003efewer, higher-power LED chipsets\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e and positions them as closely as possible to the original halogen bulb filaments. This is intended to optimize the location of the LED light source within the factory housing and help maintain an effective lighting pattern.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe result is an LED replacement designed to provide the immediate response and high-output performance of an LED while working within the original bulb housing.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eDual-Output Performance\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe M-3157W retains the dual-output characteristics associated with the 3157 bulb style.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe bulb provides:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eLower-output running mode\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eHigher-output safety-function mode\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eDepending on the vehicle's factory application, the higher-output mode can be used for functions such as the brake light, while the lower-output mode operates as the running or marker light.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis makes the M-3157W particularly useful for vehicles that use a single 3157 bulb for both running\/marker and brake functions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eAdvanced CANBUS Compatibility\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe M-3157W incorporates Lucas Lighting's latest CANBUS technology.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eLucas states that its M-Series 3157 bulbs achieve compatibility with \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003egreater than 90% of vehicles without causing bulb-out errors or fast-blinking issues\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWhile the CANBUS system is designed to provide broad compatibility, vehicle electrical systems can vary. Some vehicles may still require additional components or troubleshooting depending on how the factory lighting circuit monitors bulb resistance and current draw.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003e3157 Replacement \u0026amp; Cross-Reference Compatibility\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe M-3157W is designed around the 3157 bulb style and can replace a broad range of related bulb numbers listed by Lucas Lighting.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eLucas lists compatibility with:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003e3047, 3047K, 3047LL, 3057, 3057A, 3057ALL, 3057K, 3057KLCP, 3057KX, 3057LL, 3057ST, 3057X, 3155, 3155LL, 3157, 3157A, 3157AK, 3157K, 3157KX, 3157LL, 3157NA, 3157NAK, 3157NALL, 3157ST, 3157X, 3357, 3357A, 3357ALL, 3357K, 3357LL, 3454NA, 3457, 3457A, 3457AK, 3457ALL, 3457K, 3457NA, 3457NAK, 3757A, 3757AK, 3757ALL, 4057, 4057K, 4057LL, 4114, 4114LL, 4114K, 4157, 4157K, 4157LL, 4157NA, 4157NAK, 5702A, 5702AK\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAlways verify the original bulb and application before ordering, as bulb numbers and lighting functions can vary by vehicle.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003e3157 vs. 3156\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eLucas Lighting notes that a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e3157 bulb can replace a 3156-style bulb\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, but a 3156 bulb cannot functionally replace a 3157 except when used for a reverse-light application.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis distinction is important because 3156 and 3157 bulbs can appear very similar while serving different electrical functions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eDirect Replacement Design\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe M-3157W is designed to install in compatible factory 3157-style bulb sockets.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eIt is a practical upgrade for customers who want to replace their factory halogen bulbs with LED technology without changing the vehicle's original socket or lighting housing.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBefore installation, verify that the original bulb is a compatible \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e3157-style dual-output bulb\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e and that white illumination is appropriate for the intended lighting position.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eTypical Applications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe M-3157W can be used in compatible applications such as:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003eReverse lights\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBackup lights\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBrake lights\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRear marker lights\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRunning lights\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOther compatible 3157 dual-output applications requiring white illumination\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFor front turn signals requiring a white running light and amber turn-signal function, use the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eM-3157SB switchback\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003einstead.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eQuick Specifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003eSpecification\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eDetails\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBrand\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eLucas Lighting\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSeries\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eM-Series\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSKU\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eM-3157W\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBulb Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3157 LED\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eColor\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eWhite\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOutput\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eDual Output\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eTechnology\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eLED\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eCANBUS\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eYes\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eApplications\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eReverse \/ Brake \/ Marker\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eInstallation\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eDirect Replacement\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eQuantity\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2 Bulbs\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBulb Style\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3157\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eCross-Reference\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3157 and compatible bulb styles\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eWhat's Included\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003e2 × Lucas Lighting M-3157W White LED Bulbs\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eImportant Fitment Information\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBefore ordering the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eM-3157W\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, verify that your vehicle uses a compatible \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e3157-style dual-output bulb\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e in the intended lighting position.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe M-3157W is the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ewhite\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e version of the M-Series 3157 and is intended for reverse, brake, and marker applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe M-3157 family also includes other color\/function options:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eM-3157W\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – White for reverse, brake and marker applications\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eM-3157SB\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Switchback for front marker\/turn-signal applications\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eM-3157R\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Red for brake, marker and turn-signal applications\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eVehicle fitment can vary by year, trim and lighting configuration. Always confirm the original bulb number and application before ordering.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eInstallation\u003c\/span\u003e\u003c\/h2\u003e\n\u003col data-spread=\"false\" start=\"1\"\u003e\n\u003cli\u003e\u003cspan\u003eTurn off the vehicle and lighting system.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRemove the factory 3157 bulb.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInstall the Lucas M-3157W into the factory socket.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMake sure the bulb is fully seated.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTest the lower-output running\/marker function.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTest the higher-output brake or safety function where applicable.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCheck the vehicle for any bulb warnings or abnormal flashing.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eReinstall any removed components after confirming proper operation.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eIf the bulb does not illuminate after installation, check the bulb orientation and socket connection before further troubleshooting.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eFAQ\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cspan\u003eWhat is the Lucas M-3157W?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe Lucas Lighting M-3157W is a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ewhite high-output 3157 LED bulb\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e with dual-output operation and CANBUS technology. It is sold as a pair.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eWhat color is the M-3157W?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe M-3157W produces \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ewhite LED light\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eWhat is the M-3157W used for?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eLucas Lighting lists the white M-3157 for \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ereverse, brake and marker applications\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eIs the M-3157W a dual-output bulb?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eYes. The 3157 M-Series uses a lower-output running mode and a higher-output safety-function mode, such as braking.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eIs the M-3157W CANBUS compatible?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eYes. Lucas Lighting states that its M-Series 3157 bulbs use CANBUS technology and achieve compatibility with greater than 90% of vehicles without bulb-out errors or fast blinking issues.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eWill the M-3157W work as a reverse light?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eYes, provided the vehicle uses a compatible 3157-style bulb in the reverse-light position. Lucas specifically lists the white M-3157 for reverse applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eCan I use the M-3157W as a brake light?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eYes, when the vehicle uses a compatible 3157 dual-output bulb for its brake-light application. Lucas lists the white M-3157 for brake applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eIs the M-3157W a switchback bulb?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eNo. The M-3157W is the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ewhite version\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. The M-3157SB is the switchback version designed for front marker\/turn-signal applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eWhat is the difference between M-3157W and M-3157SB?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eM-3157W\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e provides white illumination for reverse, brake and marker applications. The \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eM-3157SB\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is designed for front marker\/turn-signal applications and switches between white and amber.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eCan a 3157 replace a 3156?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eLucas states that a 3157 can replace a 3156, but a 3156 cannot functionally replace a 3157 except in a reverse-light application.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eHow many bulbs are included?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe M-3157W is sold as a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003epair of two bulbs\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e","brand":"Lucas Lighting","offers":[{"title":"Default Title","offer_id":67589249040552,"sku":"M-3157W","price":74.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0631\/9508\/7016\/files\/lucas-lighting-m-3157w-3157-white-high-output-led-bulbs.png?v=1790815666","url":"https:\/\/proaudiocenter.com\/products\/lucas-lighting-m-3157w-3157-white-led-bulbs","provider":"Pro Audio Center","version":"1.0","type":"link"}