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This compact red LED light delivers bright, even illumination while using very little power—just 0.082 amps at 12.8 volts. The single diode puts out a clean, crisp light that stands out clearly at night or in low visibility. With no filaments to break and no bulbs to replace, it lasts up to 50 times longer than incandescent lights. Once it’s in place, you can count on steady performance for years to come.
Built for harsh conditions, this light is sonically sealed so the lens and housing form one solid waterproof unit. That means moisture can’t sneak in and ruin the diode or wiring, even if the trailer gets submerged. Whether it’s heavy rain, a washdown, or a launch ramp, the light stays dry inside and keeps working like new.
Visibility is safety, and this PC-rated light spreads its beam a full 180 degrees—90 degrees to each side of centerline. When properly installed, it works as both a clearance and side marker light, making your trailer clearly visible from multiple angles. It meets DOT requirements too, so you know it’s road ready.
Installation is simple and secure. You only need a 3/4" hole for the recessed mount, and the included gasket helps seal it tight. The locking ring keeps the light firmly seated and helps deter theft by holding it snugly in place. A 2-wire pigtail with 0.18" male bullets makes wiring straightforward—one for power and one for ground—saving time during setup.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today, we're going to be taking a look at the Optronics LED clearance and side marker light with a locking ring. This small, round trailer light's going to function as both a clearance light and side marker light when properly mounted. This does feature a sonically sealed design, so the housing is waterproof and the lens unit's waterproof, so it is submersible. LEDs are going to make great replacements for incandescent lights. They last longer, they burn brighter, they're much more efficient. This is a red lens.
Now, the housing and the lens is going to be made from a polycarbonate construction. It's very strong and durable. When mounting this, it is designed to be a recess mount. It does come with the included rubber gasket that goes in between the light and the mounting surface. Now the installation does require a 3/4 inch diameter hole at the desired location. That's the diameter here at the base of the light, and it's going to come with the included locking ring.
This is going to deter theft of the light. This ring secures the light inside the mounting hole in the trailer. It's got the built-in tabs on it that are going to grip around the threaded portion on the base of the light, so it just goes over that point there. Push it in, it grabs on, and it really does hold tight for a nice, strong fit. Again, that's really going to help deter theft.
It's also going to add to the security of the light at the mounting location. This is a 2-wire design. You can see that it has a wire casing that goes around the wires, keeping them together. It's also going to keep them safe and protected. Then on the end of the wires, we're going to have the .180 male bullets. We're going to have the white wire for ground, black wire for power.
This is Department of Transportation compliant. It's a PC-rated light. Taking a look at some of the dimensions real quick. The actual light, here at the front, is going to give us a diameter of about 1 inch, and then again, this rear portion right here is going to give us a diameter of 3/4 of an inch. The depth, that's going to measure about 7/8 of an inch. The power draw at 12.8 volts is 0.082 amps. It's going to contain one diode or one LED, and Optronics is going to cover that LED with a lifetime warranty. We're going to go ahead and hook it up to our external power source, that way you can see what it looks like with power running to it. We'll also be able to turn off our overhead light, so you can see it in a low light setting. Here, you can see the light sends out a nice, strong, consistent signal. Again, it's going to contain one LED or one diode. Really strong signal output for as small of a light as it is. Again, the LEDs are great. They're going to be much brighter when compared to incandescent lights. They're going to last longer, so you don't have to worry about brittle filaments, you don't have to worry about replacing bulbs. Overall, they're just going to be more efficient. That's going to do it for today's look at the Optronics LED clearance and side marker light with the included locking ring.
Ratings & Reviews
Mike L.
3/31/2026
That's great to hear, Jim! I'm glad to hear your marker lights are working well for you. Where's your favorite boating spot? I really like Table Rock Lake in Missouri near Branson...
Raymond
5/24/2026
At first the light was brighter than the other lites on the trailer. It has settled down so as to match the brightness of the other lights.
Victoria H.
3/26/2025
Wow, that's great to hear that these have held up so well for you Pat! Keep shining bright :)
Pat
3/27/2026
Its been a couple years of Michigan weather and winters with the most hated road salt. The LED lights are still working without any issues. I still recommend buying these lights you wont go wrong.
Heather A.
3/27/2026
Jay
11/1/2025
Still lighting brightly. Mounted on boat trailer that routinely goes in seawater. No problems so far.
Stephen D.
10/29/2020
After one year the light still works without any issues. I love having a nice bright turn signal on the side of my RV.
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Gary
12/22/2024
Product is working great! No problems!