bing tracking image
  1. Trailer Lights
  2. Optronics
  3. Clearance Lights
  4. Round
  5. LED Light
  6. Amber
LED Trailer Clearance or Side Marker Light w/ Reflex Reflector - Submersible - 8 Diodes - Amber Lens
Optronics

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

Part Number: MCL59AB
In Stock
$14.15
Retail:$31.10
You Save: 55%
Trailer Lights
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.
By submitting this form, you understand and agree to our Terms of Sale, Website Terms of Use and Privacy Policy.

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

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 etrailer.com or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (4491)
  • Q & A (0)
  • Photos

Optronics Trailer Lights - MCL59AB

Highlights

  • Reliable In Any Weather: Sonically sealed housing keeps water out for lasting performance.
  • Fewer Replacements Needed: LEDs last 50 times longer and draw just 0.047 amps at 12.8V.
  • All-in-One Visibility: Works as a clearance or side marker light with built-in reflex reflector.
  • Easy Power Connection: Accepts standard 2-prong plug for quick wiring.
  • Simple Mounting Options: Fits open or closed back recessed grommets for a clean setup.
  • Road Legal: DOT compliant and P2 rated for proper trailer lighting coverage.

Features to know about

Upgrading from Bulbs to LEDs: Bright, Efficient, and Long-Lasting

Old bulbs burn out fast and draw more power. This 2-1/2" round LED trailer light runs eight diodes that last up to 50 times longer than incandescent lights. At 12.8V it only draws 0.047 amps, so you get a bright, clean amber glow without stressing your electrical system. No filaments means no broken bulbs and no replacements—just steady light every time you hook up.

Worrying About Water Intrusion: Fully Submersible and Sealed

If your trailer ever sees rain or the boat ramp, this light is ready. The housing and amber lens are sonically sealed into one waterproof unit that’s submersible, keeping water out of the circuitry and protecting the LEDs for the long haul. It’s a solid choice for anyone who needs lighting that holds up in wet or muddy conditions.

Needing a Reflector Without Extra Parts: Built-In Reflex Design

Instead of adding a separate reflector, this light already includes one inside the lens. The built-in reflex reflector keeps your trailer visible even when the light isn’t on, giving you the safety benefit of reflective coverage without extra hardware. It’s simple, clean, and efficient—just mount one piece and you’re done.

Limited Mounting Options: Fits Standard Grommets and Plugs

This LED light gives you flexibility for how you mount it. It fits flush or recessed using open- or closed-back grommets like the A55GB, A56GB, or A57GB (sold separately) and connects through a standard 2-prong plug such as the A46PB or A86PB (sold separately). The 2-1/2" diameter body and 1-1/16" thickness make it an easy fit into standard round cutouts for a clean install.

Meeting Lighting Standards: DOT-Compliant P2 Rated Coverage

The P2 rating means this light throws a 45-degree beam to each side of center for a total of 90 degrees of coverage—perfect for use as either a clearance or side marker light when properly placed. It meets DOT requirements and delivers reliable, consistent visibility so other drivers can clearly see your trailer at night or in low-light conditions.

Specs

Dimensions

  • Overall diameter: 2-1/2"
  • Thickness: 1-1/16"

Dimensional diagram of Optronics MCL59AB round amber LED trailer clearance or side marker light showing 2-1/2 inch diameter and thickness measurements for mounting reference

Electrical

  • Power draw at 12.8V: 0.047 amps
  • Voltage: 12V DC

Lighting

  • Diodes: 8
  • Lens color: Amber
  • LED color: White
  • Rating: P2 rated
  • Compliance: DOT compliant

Warranty

  • LEDs: Lifetime warranty

Manufacturer Cross Reference

  • Truck Lite #: 10208Y

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





Customer Satisfaction Score:

Ratings & Reviews

4.8

4489 reviews
5 Stars
(3855)
4 Stars
(446)
3 Stars
(83)
2 Stars
(36)
1 Star
(69)
Review sort icon
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.

by:

Daniel profile picture

Daniel

4/8/2024

Its been a year since purchasing and installing the trailer lights - they are still shining bright!!!



by:

Great light, fits good and extremely br ight.



by:

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



by:

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



by:

Very bright, good reflector, and visibl e.



by:

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



by:

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



by:

ALL LED LIGHTS ORDERED EXCEEDED MY EXPECTATIONS...THANK YOU



by:

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



by:

Lights work great and are very bright. Shipping was very fast.



by:

LED's fit right in place of old incandescent lights



by:

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



by:

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 !!



by:

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



by:

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



by:

Usually you are completely on top of your game. This time my company is slightly disappointed in the timeframe of events. We stock checked all parts prior to ordering but then found out after the order was placed some were not in stock. Nobody reached out to let us know the parts were out of stock or asked if we would like to have the rest of the order shipped while waiting for the remaining out of stock items. Once we called we were able to get things moving however the shipment still was not expedited and took an additional extra five days.



by:

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!



by:

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.



by:

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



by:

wow awesome fast shipping



by:

Awesome



by:

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.



by:

good product, good fit, fair price



by:

Product works as advertised.

Daniel profile picture

Daniel

10/4/2025

The side markers are working just fine excellent running lights and they flash with the blinkers too.



by:

The lights seem bright but i cant install one correctly because the mounting grommet doesnt fit


25
25

See what our Experts say about this Optronics Trailer Lights

  • 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 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
  • 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...
  • 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
  • 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...
  • 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...
  • 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...
  • 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...
  • 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...
  • 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...

Do you have a question about this Trailer Light?


Info for this part was:

Employee Adele M
Updated by:
Adele M
Employee Wilson B
Updated by:
Wilson B
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:
David F

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.