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Optronics LED Trailer Clearance or Side Marker Light - Submersible - 3 Diodes - Round - Amber Lens

Optronics LED Trailer Clearance or Side Marker Light - Submersible - 3 Diodes - Round - Amber Lens

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MCL55AB - Round Optronics Clearance Lights
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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 (sold separately). Accepts standard 2-prong plug. P2 rated. Great Prices for the best trailer lights from Optronics. Optronics LED Trailer Clearance or Side Marker Light - Submersible - 3 Diodes - Round - Amber Lens part number MCL55AB can be ordered online at or call 1-800-496-5010 for expert service.
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  • Reviews (69)
  • Q & A (0)
  • Videos (2)
  • Photos
  • Why etrailer?

Optronics Trailer Lights

  • 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 (sold separately). Accepts standard 2-prong plug. P2 rated.


  • LED trailer light functions as a clearance light 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 systems
  • Recessed mount with grommet (A54GB sold separately)
  • Accepts industry standard 2-prong plug
  • P2 rated


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

Manufacturer Cross Reference
Light will work as an exact replacement for:
Uni Bond # LED2000-4A
Truck Lite # 30250Y
Grote # 47113
Peterson # M164A
Maxxima # M30250Y
Custer # CPL2-A

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.

MCL55AB Optronics 12V LED Clearance or Side Marker Trailer Light - Submersible - 3 Diodes - Round - Amber Lens - P2 Rated

Alternate part number: MCL-55AB

Item # MCL55AB

California residents: click here

Video of Optronics LED Trailer Clearance or Side Marker Light - Submersible - 3 Diodes - Round - Amber Lens

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

Video Transcript for Optronics Trailer Lights - Clearance Lights - MCL55AB Review

Today we are going to be taking a look at Part Number MCL55AB. This is the Optronics Round LED Amber Trailer Clearance or Side Marker Light. It is going to feature a nice sealed, waterproof design. It is going to have the amber lens. The lens and the base are going to be made from a poly-carbonate material so they are going to be very strong and durable. This unit is going to contain three LED's so it is going to have the multi diode design which when hooked up to power, is really going to optimize our light output. LED's are going to be great replacements for incandescent lights.

They are going to last longer. They are going to burn a lot brighter and they are going to be much more efficient. You also don't have to worry about replacing the bulbs and you don't have to worry about brittle filaments. See here on the back side, it has got a two prong connection. This is designed to accept your industry standard two prong plug, making it very simple to upgrade from an incandescent light design or incandescent light system. In order to get this mounted, it does require a mounting grommet or a mounting bracket as well as the plug, for a complete installation.

Those items are sold separately. They can be found and picked up here on our website. If we take a look at the overall dimensions, it is going to give us a diameter of about 2 inches. The overall depth including the plug at the back is going to measure about 1 inch deep. If we just take a measurement of the depth of the lens, we are looking at about 3/4 of inch. This light is going to draw 0.06 amps at 12.8 volts and Optronics is going to put a lifetime warranty on the LED's.

We are 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 are simply just going to make our connection here at the back, push the plug all the way in until it gets seeded well up against the base. It is going to create a nice, tight seal. This is what the light looks like with power running to it and with our lights turned off. The multi diode design is really going to optimize our light output so it is going to send a pretty consistent, strong LED signal.

Again, this is an amber light and it is designed to be used as a clearance or side marker light for your trailer. That is going to do it for our review of Part Number MCL55AB. This is the Optronics Round LED Amber Trailer Clearance or Side Marker Light. .

Customer Satisfaction Score:

Customer Reviews

Optronics LED Trailer Clearance or Side Marker Light - Submersible - 3 Diodes - Round - Amber Lens - MCL55AB

Average Customer Rating:  4.9 out of 5 stars   (69 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 (sold separately). Accepts standard 2-prong plug. P2 rated.


Nice, bright and easy to install. A much needed upgrade from the incandescent bulbs. Makes my boat trailer look great!


Great product and price and high speed delivery. Now if I only knew where the three tires and wheel were that I ordered from etrailer on the 21st were. And although showing in-stock on the order update document, they haven't shipped yet. Must be in the Bermuda Triangle.....


Excellent products. These lights work perfectly, are rugged and seem to last. The license plate lights are super bright so law enforcement have no problem reading the plate which avoids unnecessary stops. The lights are directs replacements as well so no modifications needed. Great products. I recommend etrailer to many of my friends and colleagues.


Great selection of products on their website. I bought these lights as replacements when my lenses cracked out. Fast shipping and great communication.


Great product, easy to install as a replacement of the original marker lights.

Working great. Much brighter than the old ones.
Bill M - 10/13/2018


Great product. Not only do these replacement marker lights give my auto trailer an updated, or modern look they also greatly enhance its visability to others on the road. This is a huge safety improvement. They were also a snap to install, approximately 2 minutes each including clean up of the wiring connectors. I love them.


a little more involved install then I was anticipating, the 2 wire pig tail doesn't fit in the space behind the grommet, so I had to use a hole saw and cut out a piece of the fiber glass roof, looks good


Have not yet had time to install the LED lighting items I recently purchased to refurbish my car trailer.
I will say however that the customer service I experienced from etrailer was bar none the best I've ever encountered.
Items received were correct and expertly packaged as well.
Thank you for the great experience!


Easy installation, connections cam PRE die-electric greased which was a nice bonus!

I did buy new grommets with these as well.

Bright and should last a lifetime!


The trailer lights from etrailer shipped fast and arrived comfortably packaged. They were a perfect replacement for my CAM Superline equipment trailers.


I replaced my old incandescent trailer lights with these LED lights. everything fit and they are a lot brighter.


I have been very happy with all the purchases I have made at etrailer parts arrive on time and our what I expect i’d like to thank you and your staff for the service I provide


Was just the exact part I needed and fit and works well. Easy ordering and has a lot of parts to choose from. When needed will definitely order from etrailer again.


Product worked as advertised and delivered on time. Lights super bright compared to old ones. Thanks!


Dab of dielectric grease on connection would be nice.


Great products and always outstanding service from the etrailer group.


Shipped quickly. Product arrived in good condition, and follow up by etrailer is helpful. Products not installed yet but on the to do list now.


Ordered multiple LED trailer lights. As usual, etrailer had what I needed and shipped on time.


Product fit perfectly. The LED lights are brighter than the original making the trailer more visible


Perfect fit. Good quality.


The lights I ordered and the accessories came and where exactly what was needed.The poeple I talked to when I ordered where very helpful and courteous. I will be very comfortable dealing with them again.


Products were as ordered and as needed. Self rewire project went very well and has functioned flawlessly.


Bought LED lights as replacements, installed all of them and checked the light, very nice.


Easy install and great output.

All are still working great.
Chris - 03/28/2021


Really bright good for backing up at ni ght

Show More Reviews

See what our Experts say about this Optronics Trailer Lights

  • What Size Hole is Needed to Install the LED Trailer Clearance/Side Marker Light
    In order to install the LED Trailer Clearance/Side Marker Light part # MCL55AB you will need the Flush Mount 2" Round Grommet part # A54GB and the Right Angle 2-Wire Pigtail for Optronics Trailer Lights part # A46PB. Once you have acquired these items the rubber grommet will require a 2-5/16" diameter mounting hole to install. I have attached an installation video of the rubber grommet for you as well.
    view full answer...
  • Availability of Round Amber Trailer Lights with Weathertight Construction
    I do have some options for you, however there is not a round amber light available that is designed to work with the 2-Wire Pigtail Weathertight Plug # A42PMB that you referenced. This particular harness is made for certain Optronics red backup lights. Optronics does have a nice selection of round amber trailer lights available that feature a waterproof, submersible design that connect using the 2-Wire Pigtail # A46PB such as the LED # MCL55AB. This pigtail still offers an easy plug-in...
    view full answer...
  • Flush Mount Grommet and Wiring Pigtail for 2 Inch Clearance and Side Marker Lights
    The Sealed, 2" Round Trailer Clearance and Side Marker Light, Flush Mount - Amber # MC53AB or the LED # MCL55AB will use the 2" Round Grommet - Flush Mount - Open Back # A54GB for installation. You will also require the wiring pigtail # A46PB which will give you 6 inches lead.
    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 Zack K
Video Edited:
Zack K
Employee Tyler C
Written by:
Tyler C
Employee Adele M
Updated by:
Adele M
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
Wilson B
Employee Brian T
Updated by:
Brian T
Employee Cole B
Installed by:
Cole B

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