Your existing G4, JC10 or JC20 bulb is 250-320 Lumens. This bulb is over 800 Lumens – about THREE TIMES AS BRIGHT than the bulb you are replacing!
This bulb is PERFECT for your overhead 12 or 24 Volt puck lights throughout your boat or RV!
Recommended for interior ceiling puck lights or anywhere you need a lot of light!
This is the bulb that SHOULD overhead puck lights – brighter, (no more brown fixtures and lenses) and with 90% less energy used!
Available in a BACK-PIN Version.
This bulb is a Cabin Bright Exclusive!
This G4- Bi-Pin Base bulb fits your G4 sockets and replaces all your JC10 or JC20 bulbs.
• Base: G4 / Bi-Pin Base
• LEDs: 15-5730s
• Volts: 10-30 AC/DC
• PERFECT for YOUR 24 VOLT BOAT or RV!
• Amps: 0.125
• Lumens: 800+
• Dimensions: 32mm in diameter
• Lifespan: 60,000 hours
• 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.
Choose your preferred color temperature from the “Choose an Option” drop-down menu above.
These 12 SMD bulbs were developed for the 24-volt RVs and boats. They work in 12-volt environments as well. They DO fit in the ceiling puck lights so prevalent in our boats and RVs. The 3200K-Warm White bulbs are used in the bedroom or anywhere you would like a soft light. The 4100K-Neutral White bulbs are best suited for kitchen or galley table, recliner, and over the couch. The 5500K-Day White is a high-contrast light best suited for task lighting. Over the captain’s chairs, engine rooms, or other places where you would turn on the light, do something and turn it off again. A lot of customers refer to the 5500K as the BRIGHTER bulb. This is not the case. All the bulbs are exactly the same amount of lumens. The WHITER bulbs SEEM brighter, but they are not. They just appear that way because they are whiter.
The 15-5730 LEDs produce 300% more light than your JC10 or JC20 halogen bulbs you are replacing but will draw less than 7% of the power. . .Making your house batteries last longer.
To REALLY make your coach batteries last the longest, look through the rest of our site and replace ALL your lights with the Cabin Bright LED Solution!
1141 / 1156 Single Contact Base
921 / T10 Base Incandescent Bulb. 2 amps, 255°F Degrees.
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. 
Alan Walker (verified owner) –
Excellent customer service, excellent product, and quick shipping! With so many different types of replacement bulbs available, Joe at Cabin Bright makes it easy to find what you need with detailed descriptions and pictures.
James C. (verified owner) –
Great product, great service.
Lewis Wallner (verified owner) –
Nice product, fast shipping