The Dual-Contact LED Bulb – BA15D (12V/24V) is a compact marine LED replacement bulb designed for compatible boat light fittings with a double-contact bayonet holder. It features 13 cool-white LEDs positioned around the sides and top of the bulb to provide a 360° lighting pattern. This design is useful where light needs to spread around the fitting rather than project in only one direction.

This BA15D LED bulb is specified for 12V/24V applications and is suitable for boats, yachts, fishing vessels, workboats, tenders, and other marine electrical systems using the matching bulb base. Its double-contact base has two bottom electrical contacts and same-level side locking lugs, allowing it to install with a push-and-twist bayonet fitting in a compatible holder. BA15d bases are double-contact 15 mm bayonet bases with in-line locking lugs; they should not be confused with offset-pin BAY15d holders.

The 13-LED layout includes LEDs facing outward around the body and LEDs facing upward from the top surface. This helps the bulb distribute cool-white light through the surrounding lens or fixture housing. It can be used as a replacement marine light bulb in compatible cabin lights, dome lights, courtesy lights, utility lights, and selected enclosed boat lighting fixtures. For an anchor light bulb or boat navigation light bulb application, always confirm that the fixture manufacturer permits LED replacements and that the completed fitting meets the required light colour, intensity and visibility requirements.

This BA15D bulb is intended for fittings that use a matching double-contact bayonet socket and the correct voltage. Before installation, compare the existing bulb base, contact arrangement, side-pin position, and available space inside the light housing. The supplied information confirms the LED count, cool-white output style, 360° lighting arrangement and double-contact base, but does not state lumen output, wattage, dimensions, IP rating, polarity, dimming function, material specification or navigation-light certification. Buyers should therefore verify these details with the supplier or test the bulb in the correct fitting before final installation.

As a marine light bulb replacement, this product is useful for keeping compatible onboard lighting fixtures operational while retaining the familiar BA15D bayonet mounting style. The compact LED construction shown in the product image makes it suitable for fixtures where a conventional bulb is replaced by a multi-LED alternative, provided the housing has sufficient internal clearance. It should be installed in a clean, dry socket with the vessel power switched off. Check that the bulb locks securely into place and that the lens, wiring, and lamp holder remain in good condition.

Key Features:

• Dual-contact BA15D bayonet base.
• Specified for 12V/24V marine electrical applications.
• 13 cool-white LEDs.
• 360° lighting arrangement.
• LEDs are positioned around the sides and top of the bulb.
• Push-and-twist bayonet mounting style for compatible holders.
• Suitable as a BA15D LED replacement bulb where base, voltage and fixture clearance match.
• Compact design for compatible marine lighting housings.
• Suitable for enclosed cabin, dome, courtesy, and utility light fixtures.
• No lumen, wattage, IP rating, dimensions, or navigation-light compliance rating is stated in the supplied product information.

Applications / Suitable For:

• Compatible marine cabin light fittings.
• Boat dome lights and interior utility lights.
• Courtesy lights, locker lights, and enclosed onboard fixtures.
• Marine light bulbs require a double-contact BA15D-style base.
• Replacement use in compatible 12V or 24V boat lighting circuits.
• Replace the anchor light bulb only when the fixture, voltage, lens, and required visibility specifications are confirmed.
• Boat navigation light bulb replacement is only permitted when approved by the light fitting manufacturer and applicable vessel requirements.
• Yacht, fishing boat, workboat, tender, and leisure craft lighting systems using the matching socket.

FAQs:

Q: Is this a BA15D or BAY15D LED bulb?
A: The supplied product image shows a double-contact bayonet base with same-level side locking lugs, consistent with BA15D. Check your existing holder before ordering because BAY15D uses offset locking lugs.

Q: Can this bulb be used as an anchor light bulb?
A: It may be used only where the anchor-light fitting has the correct BA15D socket, correct voltage and adequate clearance. Confirm that the complete fixture meets the required visibility and compliance requirements.

Q: Does this BA15D LED bulb work on both 12V and 24V boats?
A: The product is listed for 12V/24V use. Confirm the correct voltage version or supplier specification before installation.

Q: Is this suitable for a boat navigation light bulb replacement?
A: It can be considered for compatible fittings, but the bulb alone does not confirm navigation-light compliance. Check the lamp housing, lens colour, light output requirements and vessel regulations before use.