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Flat LED bulbs with 18 diodes upgrade or replace 1141, 1003, and 1156 bulbs to provide warm white light for overhead and top-mount applications on RVs, boats, and vehicles. Compatible with dimmable fixtures. Built-in surge protection. BA15s base.
Features:
Specs:
Light Bulb Cross-Reference
This 1141/1156 light bulb has a BA15S base which is the same base that is on the following light bulb types:
Color temperature refers to the color of the light emitted by a bulb or lamp. This light is ranked on a scale of 1,000 to 10,000 Kelvins (K), which gives you an idea of what color the light will be. These ratings are generally grouped into warm white and cool white classifications. This bulb is rated at 3,500 K, providing a warm white light.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Jeff: Hello, everybody. This is Jeff at etrailer.com. Today, we're going to take a look at these warm white directional 1003, 1141, and 1156 LED bulbs with the single contact Bayonet base. And it is for a quantity of two bulbs. Now, these are LED flat bulbs, which will upgrade or replace the 1003, the 1141, and the 1156 light bulbs to provide nice warm white lighting. These are great for top-mount or overhead applications.
You can see they are a directional design. They'll provide 180 degrees focus lighting. It is a 12-volt bulbs, so that's many applications in your RV or trailer, your boat, or your vehicle, the LEDs.They make great replacements for incandescent bulbs because they're rated for up to 50,000 hours. They are more efficient because they'll provide brighter light with less power output. And of course no bulbs to replace or brittle filaments to break.
Now, at the end of this video, I am going to hook this up to some 12 volt power to show you how bright it is.Now, these bulbs are compatible with dimmable fixtures for nice, simple adjustment of your light brightness. They do offer a built-in surge protection to safeguard your internal electronics. And it is a single contact bayonet base, which installs into a compatible 15-millimeter socket, that they pushed in a twist motion. And it is a non-polarized design. Meaning you could install this either way.
If you put it in this way and twist it, or if you put it in that way and twist it, either way you put it in, it will light up.This is for a quantity of two flat bulbs measurement on the bulbs themselves. The width of it is one and seven eights inches wide. The overall height to the very top here is two inches tall. Light output is 180 lumens. The bulb type is 1003, 1141, 1156.
And the base type is the BA 15S. Light type in this is warm white, color temperature is 3,500 Calvin.They do use 18 LEDs per bulb. Voltage is 1.5 Watts And it is designed to replace up to a 20 watt halogen bulb. Power draw at 12 volts is 0.125 amps.So what we're going to do now is get our power and we'll go ahead and hold that onto the bottom there. And we'll get our ground and you can see when we touch the ground, it gives you a nice warm white light. Go ahead and turn off the overhead lights and then we'll turn it on. And there you can see the 180 degree focus lighting, 18 LEDs and warm white color. Turn back on overhead lights, disconnect our power. But that should do it for the review on these warm white directional 1003, 1141, 1156 LED bulbs with the single contact Bayonet base and a quantity of two bulbs.
Ratings & Reviews

Margaret
2/27/2026
It’s still working just fine with no problems very durable and reliable.

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Gwendolyn Y.
2/28/2025
Hey neighbor! From your pics it looks like you have a pretty cool looking camper! I like the blue color a lot.