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BA15S Base 9 SMD (27 LED) Courtesy Light Bulb - Warm or Cool White


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This is a 12V DC bulb features 3 forward facing + 6 side firing cool white 5050 SMDs to create a powerful bulb with wide angle light distribution.  Each of our 5050 series SMD chips contains 3 LEDs for a total of 27 LEDs per bulb! This bulb features a BA15S base and is commonly used for “Courtesy” lighting purposes. These compact bulbs are often used for under dash lighting, under hood and truck lamps, license plate lighting, interior dome and door lamps and many others.

These bulbs are available in both Warm White and Cool White colors.  Select Warm White to preserve the factory appearance or Cool White to give your vehicles lighting a modern bright white appearance.  If you need more ihelp selecting the best bulb color, please visit our tech section for more information on Warm White vs Cool White.

If you need help determining the correct bulb for your application, please visit our Bulb Base Compatibility Table for common bulb interchanges. If you do not know the correct original part number for the bulbs in your vehicle, we recommend the following website to find the bulbs your vehicle uses.

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Product Reviews

  1. Undeer dash courtesylights/ License plate lights 5 Star Review

    Posted by on 2nd Dec 2021

    Much brighter than expected....excellent

  2. Great Illumination 5 Star Review

    Posted by on 30th Nov 2021

    Unable to find these bulbs anyplace else except here and they are just what I needed and work great.

  3. There in! Completes the interior. 5 Star Review

    Posted by on 4th Jul 2020

    These are the color temperature match to the larger ones I got to upgrade the other courtesy lights. These are perfect for a period look in your door-mounted courtesy/safety lights.

  4. Don't hesitate, great product 5 Star Review

    Posted by on 19th Jun 2020

    I replaced 4 of the 6 courtesy and map lights in my '68 Cougar XR-7 with these. sorry I didn't buy all 6 right off! These are boss. For the footwell (Mercury calls them "panel") lights, you'll have to bend back the tabs on the socket to get this bulb to seat, but that takes 75 seconds with a screwdriver if you're slow. The map lights go straight in. Clean up the map light bezels while you're at it. 1968 was never this bright!

  5. Courtesy LED bulbs 5 Star Review

    Posted by on 22nd May 2020

    These LEDs substitute for standard bulbs for the courtesy lights in the front foot wells of my car. MUCH brighter and whiter than the OEM bulbs.