1. Trailer Lights
  2. Optronics
  3. Clearance Lights
  4. Round
  5. LED Light
  6. Amber
Uni-Lite LED Clearance or Side Marker Light w Grommet - Submersible - 1 Diode - Round - Amber Lens

Uni-Lite LED Clearance or Side Marker Light w Grommet - Submersible - 1 Diode - Round - Amber Lens

Item # MCL12AKB
lowest price pledge
Our Price: $6.94
Trailer Lights
Orders above $99 qualify for Free Shipping
Shipping Weight: 0.02 lbs
In Stock
Optronics Clearance Lights - MCL12AKB
zoom in icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Customer Photos

3/4" Round. Waterproof mini trailer light serves as either a side marker light or a clearance light. Amber polycarbonate lens. Recessed mount with included black PVC grommet. 2-Wire pigtail. P2 rated. Lowest Prices for the best trailer lights from Optronics. Uni-Lite LED Clearance or Side Marker Light w Grommet - Submersible - 1 Diode - Round - Amber Lens part number MCL12AKB can be ordered online at etrailer.com or call 800-298-8924 for expert service.
  • All Info
  • Reviews (505)
  • Q & A (5)
  • Videos (2)
  • Photos
  • Why etrailer?

Optronics Trailer Lights - MCL12AKB

  • Clearance Lights
  • Round
  • LED Light
  • Amber
  • Recessed Mount
  • 1 Inch Diameter
  • Optronics
  • Submersible Lights
  • Rear Clearance
  • Side Marker

3/4" Round. Waterproof mini trailer light serves as either a side marker light or a clearance light. Amber polycarbonate lens. Recessed mount with included black PVC grommet. 2-Wire pigtail. P2 rated.


  • Small, round trailer light serves as either a side marker light or a clearance light
  • Sonically sealed, waterproof housing and lens unit is submersible
  • LEDs make great replacements for incandescent lights
    • Last 50 times longer
    • More efficient - provide brighter light with less power output
    • No bulbs to replace - no brittle filaments
  • Polycarbonate lens and housing
  • Amber lens with amber LEDs
  • Recessed mount with included black PVC grommet
    • Installation requires an 11/16" hole at desired location
  • 2-Wire pigtail - includes power lead and ground wire
  • DOT compliant
    • Meets FMVSS 108 and CMVSS requirements for automotive lighting
  • P2 rated


  • Light dimensions: 3/4" diameter x 13/16" deep
  • Grommet diameter: 11/16"
  • Diodes: 1
  • Power draw at 12.8 volts: 0.047 amps
  • Lifetime warranty on LEDs

Dimension of light

Sonically Sealed, Waterproof Trailer Light

The waterproof construction of this light makes it ideal for use on trailers that may be submerged, like a boat trailer. The housing and lens are sonically sealed together to create a single unit, which means that water will not get into the light and damage the diodes or circuit board.

P2-Rated or P3-Rated Lights

Diagram of light spread for P2 rated light

A P2-rated or P3-rated light produces a 45-degree angle of light to either side of its centerline for a total of 90 degrees of coverage. This beam pattern can be seen straight on, but it cannot be seen clearly from the side. So this type of light can be used as either a side marker light or a clearance light, but it cannot function as both. If you need both functions, then you must install 2 separate lights on your trailer - one as a front or rear clearance light and one as a side marker light.

MCL12AKB Optronics Uni-Lite Mini LED Side Marker/Clearance Trailer Taillight with Grommet - P2 Rated - Amber

Alternate part number: MCL-12AKB

California residents: click here

Video of Uni-Lite LED Clearance or Side Marker Light w Grommet - Submersible - 1 Diode - Round - Amber Lens

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Optronics Mini LED Side Marker Light Installation

Today on our trailer we're going to be installing the Optronics Sealed Uni-Lite Mini LED Side Marker Clearance Light with grommet, part number MCL12AKB. We'll also be using some Deka Heat Shrink Butt Connectors in the red color, part number DW05743-5. Here's what our new Optronics side marker light looks like. It has two wires that come off of it. This will be hooked in with the running light circuit. The white wire will be hooked in with the ground circuit or grounded directly to the trailer frame.

You will need to drill a hole. In our case we already have a hole that's in this trailer so that's where we're going to be installing our light. If you don't have an existing hole in the trailer you will need to drill one the size that this light and the grommet fit in nice and tight so that it doesn't fall back out or move around. To install it we'll go ahead and pull our wires through the hole. You'll notice real close right up on top here it says top, so we need to orient the light so that this is on the top side. Can then go ahead and push it into our hole here.

Then we're ready to come up underneath the trailer where we'll be making our wiring connection. This trailer already has a running light circuit wire as well as a ground wire run up in this area so we're just going to be tying directly in with those. Go ahead and strip a little bit of wire back. Here's the heat shrink butt connectors that we're going to be using to make our connections. Go ahead and add them here to the wiring. In this case we'll be taking the brown wire and connecting it to the black wire.

That is the running light circuit. We'll be connecting the white wire to the white wire, as that is the ground. Once we have our connectors crimped down we can go ahead and take our heat gun and seal them off. If you don't have a heat gun a cigarette lighter will work. Just be careful that you keep it moving so that it doesn't burn the wires.

Next we'll go ahead and add a little bit of electrical tape just to give our connections a little more protection. We can then use a zip tie to secure off any excess or loose wiring. Now we'll go ahead and turn our running light circuit on. As you can see here, here's what our new Optronics side market light looks like. With that, that will conclude the installation of the Optronics Sealed Uni-Lite Mini LED Side Marker and Clearance Light with grommet, part number MCL12AKB, on our trailer. .

Customer Reviews

Uni-Lite LED Clearance or Side Marker Light w Grommet - Submersible - 1 Diode - Round - Amber Lens - MCL12AKB

Average Customer Rating:  4.9 out of 5 stars   (505 Customer Reviews)

3/4" Round. Waterproof mini trailer light serves as either a side marker light or a clearance light. Amber polycarbonate lens. Recessed mount with included black PVC grommet. 2-Wire pigtail. P2 rated.


Good light. Still working. Will get again if needed. 778454


Works good bright fit goid 734260


they are great! no troubles whatsoever .I have then on my boat trailer (20) on a 16 footer, even 2 clear ones for back up lights. I beat on them never even unplug them when i put it under the water to launch or land the boat ,,,,,,,, Also on my flat bed still adding ones on it lol. 672070


Awsum lights great price . 656215


Great lite, very bright easy to install A+++++ 642875

Awesome, have used these on three different trailers now. simple to place just push and snap. great product very bright, and the boot insulates from vibration no more burned or broken filaments.
Emmet L - 05/17/2020



The product was easy to install and worked as advertised. 616710


Still working great after a year! Would buy again 594620


Exactly what I needed to rewire my vintage trailer. 579241


These 3/4 inch mini LED's were simple and fast to install and are the same commercial grade ones installed on a new trailer I purchased. New horse trailer did not have enough lights on the side and now it looks like a big rig going down the highway at night. The LED's draw very small amp's and you can light up your trailer cheaply, but on a high end product. Order was quickly delivered and this is my second order with etrailer to give you an idea of the professional service you will get. Great lights, great service. 574624


Delivered as promised, quality excellent 529281


worked perfectly as a replacement for our 2014 Sabre front cap running light. 516154


Easy to add anywhere 498029


Continue to work well, easy to install. Have been on a small trailer traveling on rough road for over 1 year. 492651


Great replacement for some old marker l ights. 476066


Worked great! 473410


great item 396673


Have used etrailer now on a number of occasions and have always been satisfied with the service I received. Have not had any problems and the quality of the products and the time delivered have been excellent. 385347


Just what i was looking for 371979


like it 356142

Doing good love them
ron - 03/20/2018



E trailer always has what I need and receive the parts and n a timely matter. 345705


These lights are great. Installed them on a boat trailer that is frequently towed behind my camper trailer. I mounted them on the fenders to face forward, and I can see them in my mirrors when I have the running lights on and also when I use turn signals (two on each side -- four total). Seeing these little LED lights in my mirrors gives me great confidence and peace of mind knowing the second trailer is still there. 293268


GOOD COST. 228704


Everything was great second time I've used etrailer all of your service was good 217957


Tested but have not yet installed the LED clearance lights. I'm impressed with performance and simple design. Looking forward to getting these installed. 211252


Of course product was fantastic as always! I just want to say that your handling/processing of my entire order was also fantastic, as well as packaging, shipping and very fast delivery. Will always be a loyal customer with this type of exceptional service. Thanks to all at the "etrailer" facility! 157628

Show More Reviews

Ask the Experts about this Optronics Trailer Lights

  • Why etrailer.com?

    At etrailer.com we guarantee:
  • Highest quality trailer lights for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate trailer light information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Expert Research:
Michael H
Updated by:
Adele M
Updated by:
Amy B
Updated by:
Sarah W
Updated by:
Brian T
Updated by:
Hannah L
Video Edited:
Dustin K
Installed by:
Cole B

At etrailer.com 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.