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LED Trailer Clearance or Side Marker Light w/ Reflex Reflector - Submersible - 8 Diodes - Amber Lens

LED Trailer Clearance or Side Marker Light w/ Reflex Reflector - Submersible - 8 Diodes - Amber Lens

Item # MCL59AB
Our Price: $14.07
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LED Trailer Clearance or Side Marker Light w/ Reflex Reflector - Submersible - 8 Diodes - Amber Lens Amber MCL59AB
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2-1/2" Diameter round. Waterproof, LED trailer light serves as either a side marker or clearance light when properly mounted. Built-in reflex reflector. Multiple mounting options. Accepts standard 2-prong plug. P2 rated. Great Prices for the best trailer lights from Optronics. LED Trailer Clearance or Side Marker Light w/ Reflex Reflector - Submersible - 8 Diodes - Amber Lens part number MCL59AB can be ordered online at or call 1-800-496-5010 for expert service.
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  • Reviews (51)
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Optronics Trailer Lights - MCL59AB

  • Clearance Lights
  • Round
  • LED Light
  • Amber
  • 2-1/2 Inch Diameter
  • Recessed Mount
  • Rear Clearance
  • Side Marker
  • Submersible Lights
  • Optronics

2-1/2" Diameter round. Waterproof, LED trailer light serves as either a side marker or clearance light when properly mounted. Built-in reflex reflector. Multiple mounting options. Accepts standard 2-prong plug. P2 rated.


  • Round LED trailer light functions as a clearance light or a side marker when properly mounted
  • Built-in reflex reflector removes the need for a separate reflector
  • 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 electrical systems
  • Multiple mounting options
    • Flush mount to trailer with open back grommet (A54GB - sold separately)
    • Recessed mount to trailer with open or closed back grommet (A56GB or A57GB - sold separately)
  • Accepts industry standard 2-prong plug (A46PB or A86PB - sold separately)
  • DOT compliant
  • P2 rated


  • Dimensions: 2-1/2" diameter x 1-1/16" thick
  • Diodes: 8
  • Power draw at 12.8V: 0.047 amps
  • Lifetime warranty on LEDs

Manufacturer Cross Reference
Light will work as an exact replacement for:
Truck Lite # 10208Y

Optronics MCL59 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.

MCL59AB Optronics LED Trailer Clearance or Side Marker Light w/ Reflex Reflector - Submersible - 8 Diodes - Round - Amber Lens - P2 Rated

Alternate part number: MCL-59AB

California residents: click here

Customer Satisfaction Score:

Customer Reviews

LED Trailer Clearance or Side Marker Light w/ Reflex Reflector - Submersible - 8 Diodes - Amber Lens - MCL59AB

Average Customer Rating:  4.8 out of 5 stars   (51 Customer Reviews)

2-1/2" Diameter round. Waterproof, LED trailer light serves as either a side marker or clearance light when properly mounted. Built-in reflex reflector. Multiple mounting options. Accepts standard 2-prong plug. P2 rated.


Works great! Easy install


They worked great


I purchased 5 of these lights to replace marker lights on my RV. They may yet work out ok, but I did not know to order the whip (wire) which is required due to the custom electrical connection on the back of the light. The light & whip should be sold as a set.


Great replacement light. Direct plug in and fit perfect. Much brighter and easier to see in mirror at night. Will eventually replace the other lights with these as well!




nice looking product to dress up my 10 year old equipment trailer, these helped make it look more modern and the led lights rarely don't work.


Quick and easy install. Good value.


Spare for the RV. Wish etrailer carried the trim rings for these. Very fast shipping.


Very happy with the lights, bright and match what we had on the truck. Will be buying from etrailer again.


excellent product. great upgrade and replacement to what i had. i will continue to buy parts from this company!!


Perfect fit.


Products are excalty what we ordered to match what was on trailer. I placed order at 8:00pm on Wed night and two hours later order was ready to ship and I had my order Friday for weekend project. AWESOME!!!!! Can't believe they got order out that fast and correct !!


Excellent light. Far superior to original incandescent type. Service was excellent and delivery was quick. Took about 5 days for delivery to Ontario, Canada.


Light is very brite and the reflectors are a nice touch.


LED's fit right in place of old incandescent lights




Very bright, good reflector, and visibl e.


Just received my lights in the mail yesterday. Not had a chance to install yet. Order complete and appears to have survived shipping.


Direct replacement for the old constant burning out light bulb ones.


what I ordered, not easy to find this light, wire and holder


Good products that were exactly as described on website.


Lights work great in and out of water 70 times in the last year - no issues - just the way I like it!
Richard M.


So far so good


Great light, fits good and extremely br ight.


Show More Reviews

See what our Experts say about this Optronics Trailer Lights

  • Are The Optronics LED Clearance Light # MCL0040ABB Waterproof
    No, The Optronics LED Clearance or Side Marker Trailer Light w/ Reflector # MCL0040ABB are non-submersible. The LED Trailer Clearance or Side Marker Light w/ Reflex Reflector # MCL59AB are submersible. This light has 8 diodes compared to one so they're brighter, and have a less power output. The light has a durable polycarbonate housing and lens. I attached a review video link below.
    view full answer...
  • 2-1/2" Round Trailer Lights that are Recessed Mounted and Rubber Grommet for 2-3/4" Hole
    Yes, the Rubber Grommet for 2-1/2" Round Trailer Lights - Recessed Mount, # A57GB requires a 2-3/4" diameter cutout for installation and allows you to use a recessed mounted 2-1/2" diameter sealed light such as the LED Trailer Clearance or Side Marker Light, # MCL59AB or # MCL59RB.
    view full answer...
  • Can 2-1/2 inch Diameter Trailer Clearance Lights Fit Custer Lite-It Wireless LED Agricultural Light
    Yes, the Custer Lite-It Wireless LED Agricultural Tow Lights # LIW-AGKIT-SG that you referenced does use 2-1/2 inch standard lights like the # MCL59AB.
    view full answer...
  • LED 2-1/2 inch Diameter Clearance Lights for Snowmobile Trailer that Install in Grommet
    The red Optronics LED clearance light part # MCL59RB is 2-1/2 inches in diameter and designed to fit in grommets. For amber then you'd want the part # MCL59AB and you'd be set. These are very reliable and have reflectors built into them as well. If you needed grommets you'd want the part # A55GB and for right angle pig tail harnesses part # A46PB.
    view full answer...
  • Looking for Trailer Clearance Light to Fit 2-5/8 Inch Rough Opening
    I'd recommend the # MCL59RB for red or # MCL59AB for amber. The lamps are sealed and are waterproof, perfect for a snowmobile trailer. Each LED lamp is 2-1/2 inches in diameter. With the lamp, you'd use the # A57GB grommet, which requires a 2-25/32 inch hole, which is about .156 of an inch larger than the 2-5/8 inch hole you referenced. If your 2-5/8 inch measurement is right on the mark, it would take just a few moments with a Dremel or a round file to slightly enlarge the existing holes...
    view full answer...
  • Are the Optronics Uni-Lite Mini LED Clearance Lights DOT Rated as a Reflector
    The Uni-Lite Mini LED Side Marker and Clearance Lights, like part # MCL11AKB and # MCL11RKB, are not rated as reflectors. We do have a couple of options that you might consider. Check out the 2-1/2 inch Round LED Trailer Clearance, Side Marker Light with Reflector, # MCL59AB and # MCL59RB. I added links to the parts needed to complete the installation of these lights for you.
    view full answer...
  • Replacement Lens Availability for Reflect-O-Lite SAE-P-P1-68
    Unfortunately we do not have any replacement lenses for your Reflect-O-Lite lights. There may be some out there somewhere but the only solution we have for you would be to replace all of your lights. If you end up wanting to do this I can help you with replacement lights but it may be worth seeing if somewhere else has replacement lenses.
    view full answer...
    Image 1 for
  • Replacement Clearance Light with a Reflective Lens for a Horse Trailer
    The Optronics light, MCL71AB, does not have a reflector in the lens. I made a short video that shows the light with the lens off. It would be a fairly water resistant light. A better option may be # MC35AB. It is about the same size and it has a reflector in the lens. It is not as low profile as the flush mount light you referenced. If you are not opposed to switching to round we have # MCL59AB or # MC57AB which has a reflector in the lens and can be flush mounted using harness # A46PB...
    view full answer...
  • Replacement LED Marker Lights for Floe Pro 100 14 Foot Snowmobile Trailer
    From all the photos I saw online, it looks like Floe used grommet mounted 2-1/2 inch marker lights and standard 6-1/2 by 2-1/2 inch oblong taillights. If that's the case, for the amber 2-1/2 inch I would recommend # MCL59AB and # MCL59RB for the red marker light. The lamps use a standard # A55GB grommet to mount. The grommet is a fit for a 3 inch diameter rough opening. The lamps are designed to be used with a 2 pin pigtail like part # A49PB. I wasn't able to find a photo showing the...
    view full answer...
  • Replacement Amber Clearance Light for Dutchman Kodiak
    The lenses on clearance lights are not generally removable as they are often "sonically sealed" such as the Optronics Trailer Clearance or Side Marker Light # MC57AB; this means they are submersible. Instead of buying a light and taking the lens off I strongly recommend an LED Trailer Clearance or Side Marker Light w/ Reflex Reflector # MCL59AB for your Dutchman trailer because an LED is a far better, much longer lasting option. You only need to make sure your existing lights have the...
    view full answer...
    Image 1 for
  • Replacement Taillights, Wiring and 7-Way Connector for Car Hauler
    To fit the round 4-1/2 inch holes on your trailer for the rear brake lights you could use the # STL42RB as this will fit in that hole. For a pigtail harness you would also need # A45PB. For the side clearance lights you would need to enlarge the holes to 3 inch in diameter, use the # A55GB as a grommet and then use # MCL59AB for the lights and # A46PB as a wiring harness. For a replacement 7-way with 8 feet of wire for running new wire everywhere you would want the part # H20046. You...
    view full answer...
    Image 1 for
  • Trailer Wiring and Lighting Replacement for Trailer with 4.5 inch Red and 2.5 inch Amber Light
    For a 4-1/2 inch diameter trailer taillight that can do stop/tail/turn functions we have the part # STL43RB which would work well. For a rubber grommet then we'd need the part # A45GB. Then for a pigtail harness you'd need the part # A47PB. For the 2-1/2 inch amber lights you'd want the part # MCL59AB and for a grommet for this you'd need part # A55GB. For a pigtail for this you'd want part # A46PB. Then for 4-way wiring sold by the foot you'd want the part # 16-4B-1.
    view full answer...
    Image 1 for

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Info for this part was:

Employee Adele M
Updated by:
Adele M
Employee Brian T
Updated by:
Brian T
Employee Dustin K
Video Edited:
Dustin K
Employee Cole B
Installed by:
Cole B
Employee David F
Installed by:
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