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LED Trailer Clearance or Side Marker Light - Submersible - 3 Diodes - Round - Amber Lens - 12V/24V

LED Trailer Clearance or Side Marker Light - Submersible - 3 Diodes - Round - Amber Lens - 12V/24V

Item # MCL55A1224B
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Optronics Trailer Lights - MCL55A1224B
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2" Diameter round. Waterproof, LED trailer light serves as either a side marker light or clearance light. Durable polycarbonate housing and lens. Recessed mount with grommet (not included). Accepts standard 2-prong plug. P2 rated. Lowest Prices for the best trailer lights from Optronics. LED Trailer Clearance or Side Marker Light - Submersible - 3 Diodes - Round - Amber Lens - 12V/24V part number MCL55A1224B can be ordered online at or call 1-800-496-5010 for expert service.
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  • Reviews (16)
  • Q & A (0)
  • Videos (2)
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Optronics Trailer Lights - MCL55A1224B

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

2" Diameter round. Waterproof, LED trailer light serves as either a side marker light or clearance light. Durable polycarbonate housing and lens. Recessed mount with grommet (not included). Accepts standard 2-prong plug. P2 rated.


  • LED trailer light functions as a clearance or side marker light when properly mounted
  • 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
  • Durable polycarbonate housing and lens
  • Amber lens over white LEDs
  • Compatible with 12V DC and 24V DC systems
  • Recessed mount with grommet (A54GB - sold separately)
  • Accepts industry standard, 2-prong plug (A46PB or A86PB - sold separately)
  • DOT compliant
  • P2 rated


  • Dimensions: 2" diameter x 1" deep
  • Diodes: 3
  • Power draw at 12.8V: 0.06 amps
  • Lifetime warranty on LEDs

Optronics MCL55 Series LED Marker Clearance Light Dimensions

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 Lights

Diagram of light spread for P2 rated light

A P2-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.

MCL55A1224B Optronics 12V/24V LED Trailer Clearance or Side Marker Light - Submersible - 3 Diodes - Round - Amber Lens - P2 Rated

California residents: click here

Video of LED Trailer Clearance or Side Marker Light - Submersible - 3 Diodes - Round - Amber Lens - 12V/24V

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

Video Transcript for Optronics LED Trailer Clearance and Side Marker Light Review

Speaker 1: Today we'll be having a look at and showing you how to install the Optronics LED trailer or clearance side marker light with four diodes. It's amber in color. Part number, MCL55A1224B.Here's what our light looks like installed and in operation at night. You'll notice that our light assembly has four LED diodes inside of it. What's great about LED lights, compared to incandescent lights, is that LEDs last up to 50 times longer and we don't have to worry about any brittle filaments inside becoming damaged as our trailer travels over rough roads.This is a sealed, waterproof design. It is an entire unit and it does not come apart, so you don't have to worry about any moisture getting inside of it causing poor light output or a short.

It is DOT compliant, and meets FMVSS 108 requirements from any 360 degree angle.Because the light is LED it also draws less power than an incandescent light, and is brighter. The amber lens on our LED assembly could either serve us for a side marker light or a clearance light. This light only draws 0.6 amps at 12.8 volts. Making it a great solution for trailers that are being towed by vehicles that don't have much power output for their lighting circuits.Now when compared to other clearance lights, such as the Optronics two inch round MCL55AB light, which we have on our website, that one only has three LEDs, whereas this one has four. Meaning this one will put out more light output, and be brighter for you during the day, and night time.Now we'll give you a few dimensions of our light.

The overall width at it's widest point is two inches. The overall depth from the end of our prong to the end of the amber colored lens, you're looking at one inch. On the back side of our light, you'll notice we have the industry standard two prong connector.Now that we've gone over some features of our light, we'll show you how to get it installed. In our case we'll be using it as a side marker light on the front left corner of our trailer.Now this light is designed to work with our standard two prong connector, which we have here. And is designed to work with a two inch rubber grommet, which we have installed.

This grommet is part number A54GB, if you need to get one.We'll take our light and we'll plug it into our connector. Doesn't matter which way it goes, just line the prongs up, and push until it clicks into place. Then we can take the light, and we'll push it into our grommet.Now we'll test our light out by using a trailer tester. We'll have it on our taillight function, because our clearance lights are powered by our taillight function from our vehicle. As you can see it's working just like it's supposed to with our four LED diodes clearly visible.That completes our look at, and showing you how to install the Optronics LED trailer clearance or side marker light that's amber in color, with four LED diodes, part number MCL55A1224B..

Customer Reviews

LED Trailer Clearance or Side Marker Light - Submersible - 3 Diodes - Round - Amber Lens - 12V/24V - MCL55A1224B

Average Customer Rating:  4.6 out of 5 stars   (16 Customer Reviews)

2" Diameter round. Waterproof, LED trailer light serves as either a side marker light or clearance light. Durable polycarbonate housing and lens. Recessed mount with grommet (not included). Accepts standard 2-prong plug. P2 rated.


{online] gives grommets and it’s cheap er.

The grommets are sold separately as mentioned on the product description page. They are part # A54GB
2" Round Grommet - Flush Mount - Open Back
-- Etrailer Expert Jenny N - 04/27/2022


Great products, great service, fast shipping. Pleasure to deal with. I would absolutely recommend them. Thanks again!


Replaced all the incandescent bulbs on my trailer with LEDs. These fixtures fit the hole that the old ones came out of and the existing two prong connectors fit as designed to the new fixtures. Was a simple process to pop out the old lights and install the new ones.
Happy with the performance and look of the new LED fixtures, also the lower load on the electrical system of the tow vehicle.


I have a 42' Hay trailer, these marker lights are on the end of it. Important for people to see. One got hit by a tree branch and was knocked out of the rubber grommet.
I ordered it and a couple spares they were in my mailbox within 3 days.
Thanks George and crew !!!!!


Great product, great fit for our applic ation.


Was the only website that had what I was looking for and easy to find with a great price! Received it in a timely manner! Will continue to shop here!


nice and bright..had a hard time getting them inserted with the ridge that is around the outside of the housing.


Very satisfied!! Great lites and easy to install.


Exactly what I ordered and delivered fast. Would definitely recommend.


Perfect fit, work well.


Awesome! Easy to install! Super fast shipping. Exactly what I ordered.


So far so good






See what our Experts say about this Optronics Trailer Lights

  • Are There 24 Volt Red and Amber Trailer Clearance Lights
    There are round clearance lights (marker lights) that are 24 volt compatible, but the closest in diameter we have to what you are looking for is 2 inch diameter lights: - LED Trailer Clearance or Side Marker Light - Red Lens # MCL55R1224B - LED Trailer Clearance or Side Marker Light - Amber Lens # MCL55A1224B - 2" Round Grommet - Flush Mount # A54GB - Right Angle 2-Wire Pigtail # A46PB Those are flush-mounted lights but there are also 24 volt surface-mounted lights: - Optronics Thinline...
    view full answer...
  • Replacement LED Light Recommendations For Trailer
    For a grommet mount red 2 inch clearance light I recommend part # MCL55R1224B. This light uses a 2-wire pigtail, part # A46PB for installation. If you need amber, you would order part # MCL55A1224B. Installed without a grommet, these lights measure 2 inches diameter x 1 inch deep. You can use the 2 inch grommet part # A54GB for this light for a flush mount. It would require a 2-5/16 inch mounting hole. The tail lights I recommend are the Optronics GLOLight LED Stop/Turn/Tail Light, part...
    view full answer...
  • Tail Lights and Clearance Lights that Can be Used on Both a 12 Volt System and 24 Volt System
    For a tail light that can run off of 12 volt or 24 volt systems you can use Transit tail light # STL90R24B. For clearance lights you can use # MCL55A1224B for an amber light that works with 12 and 24 volt systems or # MCL55R1224B for a red light. For these lights use pigtail # A46PB and grommet # A54GB. Or for surface mount clearance/marker lights that are 12-24 volt compatible you can use # MCL66A24B for amber and # MCL66R24B for red.
    view full answer...
  • Amber LED Clearance Lights or Side Marker Lights Color and Installation
    The LED Trailer Clearance/Side Marker Light - 4 Diode, 12.8 Volts - Round - Amber # MCL55A1224B will have an orange/yellow color. They do have a darker amber lens than some other options on the market. I've attached a video to assist. They will ship from our warehouse in St. Louis area (Wentzville). I've attached a review and an installation video to assist. These lights will use grommet # A54GB and wiring pigtail # A46PB or # A86PB.
    view full answer...
  • 2 and 4 Inch Diameter Trailer Lights, Grommets, and Harnesses
    I will be happy to help and give you some options. For 2 inch diameter red lights we have several options: # MC53RB (use grommet # A54GB and harness # A46PB) # MCL50RB (use grommet # A54GB and harness # A46PB) # MCL55RB (use grommet # A54GB and harness # A46PB) # MCL55R1224B (use grommet # A54GB and harness # A46PB) All in one option # MCL-50CRK # MCL155RB (use grommet # A54GB and harness # A46PB) For 2 inch diameter amber lights we also have several options: # MC53AB (use grommet #...
    view full answer...

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Info for this part was:

Employee Joshua S
Video Edited:
Joshua S
Employee Laura H
Written by:
Laura H
Employee Cole B
Installed by:
Cole B
Employee Brent H
Installed by:
Brent H
Employee Wilson B
Updated by:
Wilson B
Employee Brian T
Updated by:
Brian T

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