1076 Dual Contact BaseThis LED bulb is designed to replace the incandescent bulb in your DUAL Contact OPPOSITE pin navigation, anchor, steaming, and mast light fixtures. Created from 30 high-brightness 5730 SMDs which generates more than 800 Lumens.
• Base: 1076 / BA15D
• LEDs: 30-5730s (High Brightness)
• Volts: 9-20
• Lumens: 800+
• Dimensions: 18mm Square, 23mm Long – NOT Including Base
• Color: 3200K-Warm White, 4100K-Neutral White, or 5500K-Day White
• DIMMABLE!
Colors are for comparison only. Colors will vary with different monitors and settings.
THIS DOES NOT REPRESENT BRIGHTNESS.
3200K – Perfect for Nav lights because the warm white light output of this bulb enhances the green and red color of the lenses.
4100K – This neutral white bulb is good for steaming lights, nav lights (if you have thick red and green lenses), and anchor lights.
5500K – This day white bulb is perfect for bright stark white light output for superior visibility for steaming lights and anchor lights
Typical Anchor Light Fixtures
The diagram below illustrates the way this bulb is designed. The sleeve with the opposite pins conducts either the + OR the – . The contact on the bottom provides the + or – power to the bulb allowing your fixture socket to be wired without regard to polarity.
This bulb has been certified by the U. S. Coast Guard for 3 nautical miles.
This vessel has the 30-5730 LED bulb in its navigation and searchlight.
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1141 / 5008 Single Contact Base
37mm Festoon
Bulb pictures are not to scale. 
BAY15D
Bulb pictures are not to scale.
Dual contact offset pin bulb fits in most Nav, Steaming, Anchor, and Masthead lights. 30-5730 LEDs provide 800+ Lumens - TWICE the Lumen output of the incandescent bulb you are replacing. 9-20 VDC will allow for large voltage fluctuations. At .125 amps or 1.5 watts, this bulb draws only 6% of the power of your existing incandescent bulb. Available in 3200K for Red/Green Nav Lights, 4100K for general use in most light fixtures, and 5500K for Anchor, Steaming, and Masthead lights. Red and Green bulbs available for faded nav light lenses. 
Roger Van Vechten (verified owner) –
I purchased these bulbs as trial replacements for 9watt incandescent bulbs in navigation lights. These are so bright, the green & red lenses look “washed out”. I backed off to the “bright” LED Bulbs. I was surprised to find the bulb was not polarity sensitive.
Diane W. (verified owner) –
The part was exactly what I needed. Great Customer Service, Joe called about something else I was looking for to see if I had found it elsewhere! I highly recommend working with Joe at CabinBright.