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Uni-Lite LED Clearance and Side Marker Light w/ Grommet - Submersible - 1 Diode - Round - Red Lens
(845 reviews)
Price: $14.81
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Uni-Lite LED Clearance and Side Marker Light w/ Grommet - Submersible - 1 Diode - Round - Red Lens
Part Number: MCL10RK1224B
In Stock
$14.81
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- All Info
- Reviews (845)
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- Videos (1)
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Optronics Trailer Lights - MCL10RK1224B
Highlights
- Reliable In Any Weather: Sonically sealed, waterproof housing keeps moisture out for lasting performance.
- Longer Lifespan, Less Power: LED design draws just 0.052 amps at 12.8V and lasts up to 50 times longer than bulbs.
- One Light, Two Functions: PC rating gives 180° coverage for both clearance and side marker use.
- Compact Fit Anywhere: 3/4" round body with 11/16" mounting hole fits tight spaces cleanly.
- Quick, Clean Install: Includes recessed black PVC grommet and 2-wire pigtail for simple connection.
- Road Legal: Meets DOT, FMVSS 108, and CMVSS standards for compliant trailer lighting.
Features to know about
Brighter, Longer-Lasting, and Efficient: LED Trailer Light
This 3/4" round Uni-Lite uses a single red LED that shines bright while drawing only 0.052 amps at 12.8V. It’s PC rated for a full 180 degrees of light coverage, meaning it works as both a clearance light and a side marker when mounted properly. The LED lasts up to 50 times longer than traditional bulbs and doesn’t have fragile filaments to burn out or break, so you get strong, reliable light with less power use and no bulb changes.
Worrying About Water Damage: Fully Submersible and Sealed
If your trailer sees rain or even full submersion, this light is built for it. The housing and red lens are sonically sealed into a single waterproof unit that keeps moisture out completely. Whether you’re backing into the water or driving through storms, the sealed design protects the diode and circuitry from corrosion so the light stays dependable over time.
Poor Visibility at Night: Wide 180-Degree Beam Pattern
Visibility makes all the difference for safety on the road. With its PC rating, this light casts a clear 180-degree beam that can be seen from the front and both sides. That wide coverage ensures other drivers spot your trailer early, improving awareness and reducing the chance of an accident in low-light conditions.
Tight Fit Installations: Compact and Easy Mounting
Sometimes space is limited. At just 3/4" in diameter and 15/16" long, this compact round light tucks in neatly without sticking out where something can catch it. It mounts recessed using the included black PVC grommet and only needs an 11/16" hole for installation. The simple 2-wire pigtail—one for power, one for ground—makes wiring quick and straightforward on any 12V or 24V DC system.
Built to Handle Tough Use: Durable Polycarbonate Housing
The housing and lens are made of tough polycarbonate that stands up well to impacts and vibration. That durability means fewer worries about cracking or breaking even with regular use on rough terrain or heavy-duty trailers. Once installed, it’s a low-maintenance light built to last for years of reliable service.
Specs
Dimensions
- Light dimensions: 3/4" diameter x 15/16" long
- Grommet diameter: 11/16"
Electrical
- Diodes: 1
- Power draw at 12.8V: 0.052 amps
Warranty
- Lifetime warranty: On LEDs
MCL10RK1224B Optronics Uni-Lite 12V/24V Mini LED Side Marker and Clearance Trailer Light with Grommet - Red Lens - Recessed Mount - PC Rated
Video of Uni-Lite LED Clearance and Side Marker Light w/ Grommet - Submersible - 1 Diode - Round - Red Lens
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Video Transcript for Detailed Breakdown of the Uni-Lite LED Clearance and Side Marker Light w/ Grommet
Jeff: Hello, everybody. This is Jeff @ etrailer.com. Today, we're going to take a look at this Uni-Lite round LED clearance and side marker light with the grommet and the red lens. Now, this is a nice small round LED trailer light that'll serve as a side marker and clearance light when it's properly mounted. It has a sonically sealed waterproof housing and lens unit, which makes it submersible. Does use an LED and it'll make a great replacement for the incandescent lights.
LEDs last about 50 times longer. They're more efficient because they'll provide brighter light with less power output. And of course no bulbs to replace, no brittle filaments to break.And these do have a limited lifetime warranty on the LEDs. It is a durable polycarbonate lens and housing. It's a red lens with one red LED.
Now this light is compatible with 12 volt and 24 volt DC systems. Now for demonstration of how bright the light is at the end of this video, I am going to hook it up to some 12 volt power to show you. It is a recessed mount, and it includes this black PVC grommet.Now, when you do install this, it will require 11/16 inch diameter hole for installation. If you notice it's a two wire pigtail and includes both the power lead and the ground wire. This light is DOT, Department of Transportation compliant.
It does meet the Federal Motor Vehicle safety standards 108 and the Canadian Motor Vehicle safety standard requirements for automotive lighting. This is PC rated.A few dimensions on this. The diameter on the light itself is going to be right at three quarters of an inch. Total length on it is about 15/16 of an inch. And as I mentioned, the grommet diameter is 11/16 of an inch.
Power draw at 12.8 volts, and this is 0.052 amps. So what we're going to do is go ahead and hook some power up. Our ground and black should be our power. And turn on our 12 volt power and you can see the light comes on. Go ahead and turn off our overhead light, and you can see that one single LED gives off a nice bright light and turn back on overhead light. Turn off our power. But that should do it for the review on this Uni-Lite round LED clearance and side marker light with the grommet and the red lens.
Ratings & Reviews
4.8
845 reviews
by:
Chris
10/02/2025
These are excellent lights. Very small and compact with a very bright output. I used these as marker lights on the rear of my pickup, and it made a huge difference in visibility. Being only 3/4", you can install these in a variety of locations and for a multitude of applications. I highly recommend these and will be purchasing more for additional lighting needs.
by:
David
09/24/2025
The lights are perfect as were the previous ones. I’m always doing projects and these are my go to lights for markers and clearance lights.
by:
Greg
09/20/2016
I bought a couple more of these two-diode LED clearance lights to add some more lighting to the rear of my kayak trailer. They work nice and are easy to install in 3/4" holes that I drilled through a piece of aluminum angle. The trailer has orange clearance lights on the front sides, red clearance lights on the back sides, the stop/turn/parking lights on the back, three red clearance lights on the back, and a white LED license plate light. It's really lit up and very visible at night from the rear and sides. Thanks to etrailer.com for great products and services!
My wife and I like to kayak, but we don't like to deal with putting our kayaks on roof racks on the top of a car. So I bought a used Load-Rite trailer that was designed to hold one Jet Ski, and added a frame made of slotted angle and 2x6 lumber to hold the kayaks, and a cargo box from Tractor Supply to hold kayak seats, life jackets, towels, sun-protection clothing, and some spare gear (ropes etc), and bought all new LED lighting from etrailer.com. The paddles are too long for the cargo box so they have to go in the car! The kayaks are tied down to the trailer with several ropes front and rear, so there is a lot of safety factor in the design....I don't worry about the kayaks coming off the trailer! The entire rig works great....when we return from a kayak trip we just back the trailer in the barn and it's ready to go for our next trip. I put a 5" diameter wheel on the trailer just behind the hitch so I can push it around on flat level surfaces. See the pictures.
My wife and I like to kayak, but we don't like to deal with putting our kayaks on roof racks on the top of a car. So I bought a used Load-Rite trailer that was designed to hold one Jet Ski, and added a frame made of slotted angle and 2x6 lumber to hold the kayaks, and a cargo box from Tractor Supply to hold kayak seats, life jackets, towels, sun-protection clothing, and some spare gear (ropes etc), and bought all new LED lighting from etrailer.com. The paddles are too long for the cargo box so they have to go in the car! The kayaks are tied down to the trailer with several ropes front and rear, so there is a lot of safety factor in the design....I don't worry about the kayaks coming off the trailer! The entire rig works great....when we return from a kayak trip we just back the trailer in the barn and it's ready to go for our next trip. I put a 5" diameter wheel on the trailer just behind the hitch so I can push it around on flat level surfaces. See the pictures.
by:
David H
08/31/2020
I have finally finished the install of the great products that I’ve purchased from Etrailer. Curt 24K 5th wheel hitch, the lube discs, the front receiver hitch tube, the Factory 7-way connector and 7 -way extension (I have 3 7-way plugs on my truck) and the countless number of LED lights. The service is amazing and the customer service I received was fabulous. I really like these folks as they were vary knowledgeable about what I was after and pointed me in the right direction to accomplish my end goal. Thanks to everyone at Etrailer. I couldn’t have done it all without you.
David H.
9/1/2021
Everything I’ve done to my truck with multiple products from Etrailer has just been perfect. All working and performing as expected. Couldn’t have ask for more reliable products than those I’ve installed.
by:
So Cal Beach Camper
06/19/2017
Great addition to the basic, rear brake lights of a camp trailer.
I added these LED RED to the brake/turn function, within the existing, small holes in the rear bumper--much more apparent when stopping/turning.
These sealed LED lights are very common on larger trucks and trailers now. Easy to install and very robust assembly...priced right!
I added these LED RED to the brake/turn function, within the existing, small holes in the rear bumper--much more apparent when stopping/turning.
These sealed LED lights are very common on larger trucks and trailers now. Easy to install and very robust assembly...priced right!
Jerry N.
6/19/2018
Always great, tested products from ETrailer. These LED lights did not disappoint...still shining brightly. Thanks!
by:
Joseph
09/26/2026
Bought two of the Uni-Lite MCL11AKB. They came in promptly, were the right size and worked.
by:
John C - Arizona
04/14/2015
These were designed as a clearance light application and at a great price. I bought them to use as turn signal lamps on my RZR. They are high quality and extremely bright when lit, so they work great for both applications. These guys have great parts at a great price and quick shipping. I would recommend them to anyone needing trailer/boat/lighting. Thanks guys.
Lowell C.
3/12/2016
John, Are these lights clearly visible during the day time? I bought some that look similar but are not bright enough to be seen. Im also using them for turn signals on my RZR.
John C.
3/15/2016
Lowell C. These lights are bright enough to be seen during daylight. I use them when I am with a group to signal our next direction or 4 way as intent to slow. Everyone behind me have been able to see them even in high dust situation.
John A.
4/21/2016
Still loving it. I installed them as turn signals on my 12 RZR. Every time I go out riding they are utilized and many have made comments on how well they look and can be seen.
by:
Jobby J.
01/02/2017
I actually purchased these lights to use as a side marker light on my Jeep Wranglers after installing after market fenders. Lights have worked fantastic up to this point
Jobby J.
1/14/2018
Thank you for following up. Your email caught me off guard as many companies dont follow up like this however, I truly do appreciate it and commend etrailer.com and of course you for the awesome customer service! As to the lights themselves, I can gladly say that they are continuing to perform exactly as I had expected they would.
by:
Joseph
12/29/2019
Great little running light puck! Easy to install and very bright at night and is even very visible in daylight. Only about an inch in diameter on the outside, you wouldn't think it was much larger from the amount of light they provide.
Joseph J.
12/29/2020
Awesome, bright lights. They really blend in well in daylight but stand out at night.
by:
Jose
05/28/2024
Lights are great will buy again Thank You
Jose C.
9/2/2025
Lights are working great had them 1 year on my flatbed trailer will buy more
by:
David
06/28/2026
Perfect fit. Fast shipping
by:
Mackay
10/01/2015
Very well built, sturdy and totally sealed against moisture. I installed these into the top of my Haulmark enclosed trailer to act as clearance lights. Installation was a breeze, I just drilled a 3/4" hole with a step bit, wired all five lights together and tied it into the running lights of the trailer's harness. I put the ground against the steel frame. I went a step further and put a bead of clear marine grade silicone around the light to ensure no moisture makes it inside the trailer despite these being a tight fit. As you can see from the pictures, installation is clean and they're very bright, both day and night! I put one on either end, 6" from the sides and the three middles ones are spaced 10" apart. Similar to the clearance lights on a truck, I didn't use a template, just winged it.
by:
Chris M.
10/27/2013
Shipping was slow, but I can't complain much considering it was free!
I chopped the fenders on my 2008 Jeep Wrangler, which involved removing the side marker lights. I installed a pair of these DOT approved lights to meet inspection requirements.
As for the lights, they are well-constructed and very bright. Installation was difficult; even after drilling and deburring a 11/16" hole, the grommet barely fit in. I had to put a small amount of grease on the light's lateral surfaces before the light would slide into the grommets.
Overall, I am very pleased with the product. Poison Spyder sells an inferior product at several times the price; I am glad I found these here!
I chopped the fenders on my 2008 Jeep Wrangler, which involved removing the side marker lights. I installed a pair of these DOT approved lights to meet inspection requirements.
As for the lights, they are well-constructed and very bright. Installation was difficult; even after drilling and deburring a 11/16" hole, the grommet barely fit in. I had to put a small amount of grease on the light's lateral surfaces before the light would slide into the grommets.
Overall, I am very pleased with the product. Poison Spyder sells an inferior product at several times the price; I am glad I found these here!
by:
Mike Fritsch
10/08/2019
I have purchased lights from etrailer several times and the service and quality have been great. I have purchased lights for my truck and also have used there submersible lights for my boat trailer.
lights have been in service for over a year and still bright as the first day I installed them.
lights have been in service for over a year and still bright as the first day I installed them.
by:
Doug
04/10/2019
I ordered these light to be used as accent light on a new lift table for my company. I needed low profile and fairly bright red light to be reflected off our off-white power coat. These little lights out preformed what we were hoping for. The only thing I don't like about them is the instructions say to drill a 11.16" hole. Assembly was WAY too tight at that dimension. So we stepped it up a fraction at a time and found that 17/64" (.73) and 3/4" (.75) were perfect. Even at 3/4" the grommet was snug and water tight. The light had to be squeezed into place but at 11/16" I felt like I was about to brake the light.
Overall I am super pleased with the lights. We added them to the Bill of Materials and we will be ordering them for these new carts.
Overall I am super pleased with the lights. We added them to the Bill of Materials and we will be ordering them for these new carts.
by:
Art G.
10/14/2016
Extremely happy with customer service and all products I have purchased from etrailer.
Art G.
10/14/2017
100 working!!
by:
Tyler
01/14/2015
Awesome little light! Very bright! Fits snug in a 3/4" hole. These worked perfectly for my running light project on the air dam. Ordered these on a Sunday, they were at my door on Thursday. Excellent customer service Etrailer! (Side note, the lights behind the grill are 4" round, not the 3/4")
by:
Eddie
05/14/2021
I installed these on my home built teardrop. Worked out very well. Total current draw is under 400 mA for all lights.
by:
Matthew
08/14/2019
Great customer/sales representative, Michelle! She was awesome! She crossed referenced another number, not exactly a high volume or priced item. But she treated me like I was spending a million bucks. Also, she sent me multiple emails so I could track my package, receipt, and a thank you! All that for about a $10 order. I’ll never buy from anyone else. Thanks etrailer and Michelle.
by:
Bader
08/30/2014
They are low profile in the day, and very functional in the night with their brightness. I did not expect them to be this good. I wired them as marker lights for my rear fenders.
by:
Walter
04/30/2026
These are really nice marker lights. Nice and bright.
by:
Walter
04/30/2026
These are really nice marker lights. Nice and bright.
by:
Douglas
07/24/2021
I’ve been dealing with etrailer since 2011 and buying these lights for just as long. This is my third vehicle that I have equipped with these lights so I know first hand they are meant to last , and I would not buy them any place else but etrailer because they stand buy their products and their customer service is second to none in an era where customer service barely exists anymore
by:
Joseph
12/29/2019
Great little running light puck! Very bright even in daylight.
Joseph J.
12/29/2020
Small but bright, still working great. Blend in well with the trailer in the daylight but stand out very bright at night
by:
Km
11/10/2015
Great lights very bright, really like the size and shape of these lights and the fact that they are clear lenses and they match my complete clear trailer light set up
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See what our Experts say about this Optronics Trailer Lights
- Looking for Replacement Red Lens Version of Optronics Clearance Light OPT63KBHey Scott, we have a similar light to what you mentioned but with a red lens with the part # MCL10RK1224B. Is this what you are looking for?
view full answer... - Availability of Small Marker Light for 24V Mobility ScooterWe have the Uni-Lite LED Clearance and Side Marker Light # MCL10RK1224B which includes the grommet, both the power and ground wire, and is also compatible with 12V and 24V systems.
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Info for this part was:
Installed by:
Jeff D
Updated by:
Wilson B
Updated by:
Matthew E
Edited by:
Daron K
Written by:
Brian T
At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Greg
10/17/2017
Those lights, and all the lighting and trailer wiring products that I bought from etrailer.com, are working great! I used to have constant problems with the lights on my trailer until I switched everything out to the LED lights from etrailer.com! Now they work every time we use the trailer knock on wood!.