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

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

Part Number: MCL85AB
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$11.44
Retail:$12.78
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3-3/16" x 1-1/16" Rectangle. Waterproof LED trailer light functions as a clearance or side marker light. Durable polycarbonate lens and housing. Surface mount to trailer. 1-Wire design. Great Prices for the best trailer lights from Optronics. Mini LED Clearance or Side Marker Trailer Light - Submersible - 3 Diodes - Amber Lens part number MCL85AB can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Optronics Trailer Lights - MCL85AB

Highlights

  • Reliable In Any Weather: Sonically sealed waterproof housing keeps water out for long life.
  • Fewer Replacements Needed: LEDs last 50 times longer than bulbs and use less power.
  • Easy Mounting: Surface-mount design with 2-3/4" hole spacing installs fast.
  • One Light, Two Uses: Works as clearance or side marker light when properly mounted.
  • Compact and Durable: 3-3/16" x 1-1/16" polycarbonate body resists impact and wear.
  • Low Power Draw: Only 0.066 amps at 12.8V means less strain on your trailer wiring.

Features to know about

Bright, Efficient, and Long-Lasting: 3-Diode LED Light

Older incandescent lights burn out fast and draw more power than they should. This 3-3/16" x 1-1/16" rectangular LED light fixes that with three white diodes behind an amber lens that shine bright while using only 0.066 amps at 12.8V. The LEDs last up to 50 times longer than filament bulbs and don’t need replacements. That means less downtime and more reliable lighting every time you hook up.

Water Damage Worries Gone: Sonically Sealed and Submersible

If your trailer ever sees water, this sealed unit keeps the electronics protected. The housing and lens are sonically sealed into a single piece, making it completely waterproof and submersible. Even when launching or hauling through wet conditions, moisture stays out so the LEDs and circuit board keep working like new.

Simple Setup for Tight Spots: Surface-Mount with 1-Wire Design

Getting lights installed shouldn’t be complicated. This light surface mounts easily with 2-3/4" center-to-center holes and grounds through the mounting hardware, so there’s just one wire to connect for power. It’s compact too—only about an inch thick—so it fits neatly even where space is tight.

Built Tough for Rough Use: Durable Polycarbonate Construction

Whether it’s on the road or off, vibration and debris can take their toll on cheap lights. The durable polycarbonate lens and housing on this unit handle bumps and shocks without cracking or fading. Once it’s mounted securely, it’s ready for rough conditions where lesser lights would fail.

Better Visibility Where You Need It: P2-Rated Coverage

A P2 rating gives this light a 90-degree total beam spread—45 degrees to each side of centerline. That focused brightness works perfectly when used as either a clearance light or a side marker light, helping others see your trailer clearly at night or in low visibility without glare or wasted light output.

Specs

Dimensions

  • Overall dimensions: 3-3/16" long x 1-1/16" tall x 1-1/16" thick
  • Distance between mounting holes (center on center): 2-3/4"

Dimensional diagram of Optronics MCL85AB mini amber LED clearance and side marker trailer light showing measurements for length, height, and mounting hole spacing.


Electrical

  • Power draw at 12.8V: 0.066 amps
  • Diodes: 3
  • Compatible system voltage: 12V DC
  • Grounding method: Single wire design grounds through mounting hardware

Construction

  • Lens and housing: Durable polycarbonate
  • Waterproof rating: Sonically sealed, submersible unit
  • Lens color: Amber
  • LED color: White
  • Mount type: Surface mount
  • Hardware: Not included

Performance and Ratings

  • Light functions: Clearance or side marker light (when properly mounted)
  • Rating: P2 rated
  • LED lifespan: Lifetime warranty on LEDs

MCL85AB Optronics Mini LED Trailer Clearance or Side Marker Light - Submersible - 3 Diodes - Amber Lens - Ear Mount - P2 Rated

Alternate part number: MCL-85AB





Customer Satisfaction Score:

Ratings & Reviews

4.8

662 reviews
Review sort icon
3-3/16" x 1-1/16" Rectangle. Waterproof LED trailer light functions as a clearance or side marker light. Durable polycarbonate lens and housing. Surface mount to trailer. 1-Wire design.

by:

HAD WHAT WE NEEDED AND FAST SERVICE, GREAT DOING BUSINESS WITH YOU.



by:

Great replacement light for my boat tra iler



by:

Great service and fast shipping.



by:

Excellent shipping and customer service



by:

etrailer is a great company to order from. They follow up and are friendly and fast.



by:

Product is as described, I like the low wattage usage but I don't like that in order to get the same lumens as incandescent the lens has to be more transparent.

Ba F. profile picture

Ba F.

3/13/2015

Working like the day I put it on. Even with salt water launches.



by:

This is my second order and have had excellent, attentive service. I haven't used the products yet, so no problems to deal with at this point.



by:

The light is an exact replacement for the previous light. It arrived quickly and in good condition. The brightness is a little better because the previous light got foggy from the sun.



by:

Very satisfied with the trailer, items purchased, and service received; everything just as promised. Will definitely purchase products again from them.



by:

10x better than the Walmart type lights that look similar. These have 3 super bright LEDs you can see in noon daylight. The single LED ones aren't bright enough to see ever.

These are a quality light. Many, many dunks in fresh and salt water. Hold up well.

Didn't hold up to driving into my garage wall, but that's more the walls fault.



by:

So far soo good. Been running good after a years use !! Would buy exact replacement again. A++



by:

I was looking for amber & red led lamp ay. Could you help with the part number for the red lamp ay.



by:

Great replacement for the old styly mini marker lights, fits and functions like original with good brightness and best of all no lenses to fall off!



by:

Exact match for my ranger trailer

Doug profile picture

Doug

4/21/2023

Works just like the factory one I replaced.



by:

I have not installed these yet, tested them on bench. great lighting, but housing is all plastic will rate more at a later date, a 4 for now . fast delivery on all my etrailer parts.



by:

I've ordered a number of these side marker lights for my boat trailer over the years and they last a few years but tend to burn out due to salt water immersion.



by:

Fast shipment, installed in minutes, works like a dream.
I will definitely shop at eTrailer again, and recommend them.

Ref: Amber side marker lights for my trailer.



by:

NEEDED NEW SIDE MARKERS FOR THE BOAT TRAILER AND THESE WORKED OUT GREAT. NO PROBLEM MOUNTING AND HOOKING INTO THE HARNESS. THEY HAVE WENT IN THE LAKES MANY TIMES AND NO PROBLEM.



by:

Product was as described and shipping was fast!



by:

Ordered 4 of these for replacement on my 2015 Ranger Trail RT188 boat trailer. The original lights were riveted on, and you have to drill a couple of small pilot holes for these, but they work perfectly, are sealed and waterproof. Much brighter than the original lights.



by:

I love L.E.D. lights, these look great, and put off plenty of light. I would definitely buy them again in the future.

Heather A. profile picture
Etrailer Expert

Heather A.

4/7/2025

Aren't LED lights great!? They use so much less power but still look great. Thanks for your feedback!



by:

After years of keeping boat trailers legal and tow vehicles towing, the automatic selection when parts are needed is etrailer. This time, I found my clearance lights weren't working. I actually checked other sites, but very often they didn't explicitly state whether their lights were submersible or didn't provide specific mounting measurements. Went to etrailer and after pages and pages of products, I found the specific light size that came on my trailer--no extra holes in the main beam and simple installation with some pop rivets. Just another success story to add to the three tow hitches, three wiring harnesses, multiple tail lights and guide-ones.

Joe B. profile picture

Joe B.

8/26/2021

Still working flawlessly. In the interim, the controller on one of my vehicle light harnesses died. A small amount of money, another video session, and another e trailer harness and I was up and running. The controller that died was over 5 years old and still had the turn and stop functions operable.



by:

Excellent quality



by:

Perfect ... This clearance light was for a vintage Holsclaw motorcycle trailer ... can’t get any better than this ...
Replaced the old style with new style ...



by:

This side marker light is a replacement to an existing one. It is an exact replacement. The new light is spot on to the one I installed about 4 years ago. Good quality. It see’s salt water continuously.


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See what our Experts say about this Optronics Trailer Lights

  • Replacement Trailer Clearance LED Lights with 2 3/4 Mounting Hole Spacing
    Yes, I have an LED replacement with a 2 3/4" mounting hole spacing. I recommend the Mini LED Clearance or Side Marker Trailer Light - Submersible - 3 Diodes - Amber Lens item # MCL85AB. This is a 3-3/16" x 1-1/16" rectangle that is waterproof. The LED trailer light functions as a clearance or side marker light.
    view full answer...
  • Trailer Marker Light With 2-3/4 Inch Mounting Holes
    We do, as there is a single trailer clearance light that has the 2-3/4" on center mounting holes. The part number you need is the following: - Mini LED Clearance or Side Marker Trailer Light # MCL85AB This is an amber lens, which is the only color available.
    view full answer...
  • Replacement for Mini LED Clearance or Side Marker Trailer Lights MCL85AB and MCL85RB
    The Mini LED Clearance or Side Marker Trailer Lights like part # MCL85AB for amber are being discontinued by the manufacturer so instead of trying to find the red version and running into this issue again down the road, I recommend replacing them with a similar, updated design. The Optronics LED Mini Clearance or Side Marker Trailer Light part # MCL13R2B for red and Optronics LED Mini Clearance or Side Marker Trailer Light part # MCL13A2B for amber are what I recommend using for replacement....
    view full answer...
  • Replacement Amber Trailer Clearance Light that is 3-1/4 by 1-1/16 Inches
    Based on the measurements of the light that you have it sounds like Peterson light # 422400 will fit as a replacement. The light grounds through its mounting hardware so if the old light used 2 wires this light can still be used. You can attach a ring terminal to the ground wire on the trailer and put it between the trailer frame and the light mounting bracket.
    view full answer...
    Image 1 for
  • Do You Offer The Optronics MCL85AB With a Red Lens?
    I have a couple suggestions as the red version of the Mini LED Clearance or Side Marker Trailer Light # MCL85AB is no longer available. We have the Peterson Mini-Lite Clearance # 422600 and Optronics Mini Trailer Clearance # MC11RB lights which both share the same 2-3/4" mounting holes. These lights are all similar in design and use a single wire connection with the ground running through the mounting hardware.
    view full answer...
  • Is There Red Version of Optronics Trailer Clearance Light MCL85AB
    The red version of the # MCL85AB was the part MCL85RB which we no longer can get. The most similar replacement at this time would be the part # MCL13R2B.
    view full answer...
  • Options for Replacement Red, LED, Sealed Trailer Clearance Light
    We have couple of different light options for you, but the Optronics Sealed, Mini Rectangular LED Trailer Clearance, Side Marker Light, Ear Mount, 3 Diode - Amber # MCL85AB is not available in red. One red clearance light option we carry is the Optronics Sealed, Mini LED Side Marker, Clearance or Identification Light, 1 Wire, 2 Diode - Red # MCL131R2B. This light measures 2-1/2 inches long x 1-1/16 inches wide x 11/16 inches deep. It mounts at 2 inches, grounds through the mounting hardware,...
    view full answer...
  • Is Ground Issue to Cause For Low Light of MCL85AB
    Yep, you're 100% on the money with the issue being a less than idea ground for the Mini LED Clearance or Side Marker Trailer Light # MCL85AB. That is almost certainly the reason why it isn't as bright, and that's not terribly uncommon on these lights that ground through their mounting hardware instead of having a ground wire. I'd remove and reinstall after cleaning the ground area where it installs.
    view full answer...
  • Do You Have a Marker Light w/ a 2-1/2" Mounting Hole Spacing?
    I wasn't able to find any of our lights that use a 2-1/2" mounting hole spacing the closest two I could find to that are listed below: 3" Spacing - Optronics Double Bullseye LED Trailer Clearance or Side Marker Light - 10 Diodes - Red Lens item # MCL45RB 2-3/4" Spacing - Mini LED Clearance or Side Marker Trailer Light - Submersible - 3 Diodes - Amber Lens item # MCL85AB
    view full answer...
  • Mini LED Clearance Light With Clear Lens & One Wire
    We do have a light that is similar to the Mini LED Clearance or Side Marker Trailer Light - Amber Lens # MCL85AB but with a clear lens: - Mini LED Trailer Clearance or Side Marker Light - Clear Lens # MCL99AC1B This is a submersible, single-wire light just like you were referencing.
    view full answer...
  • Are Optronics Amber Marker Lights MCL86AB Submersible?
    The Sealed, Steel Armored LED Trailer Clearance and Side Marker Light # MCL86AB cannot be submersed; it is weather-tight. What you would want is something that is waterproof such as Sealed, Mini Rectangular LED Trailer Clearance # MCL85AB.
    view full answer...
  • Would the Mini Rectangular LED Trailer Clearance Light MCL85AB Work in Offroad Applications
    LEDs are very durable. While the # MCL85AB doesn't have a shock rating listed for it I can tell you that as long as you install it securely it should work just fine in whatever off-road application you are planning. If the ride was rough enough to somehow damage this light you would have much bigger problems I am sure.
    view full answer...
  • Recommended LED Clearance Light That Can Be Submersed
    The Optronics Clearance and Side Marker Light, part # MCL86AB is sealed and considered weathertight, but is not submersible. Its design is to protect it from the elements like rain and snow and dirt. I recommend a clearance light like part # MCL85AB. These lights have a sealed lens and housing and can be submersed. This light has an amber lens and 3 LEDs. This light has one wire for power and is grounded with the mounting hardware.
    view full answer...

Do you have a question about this Trailer Light?


Info for this part was:

Employee Patrick B
Video Edited:
Patrick B
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
Wilson B
Employee Brian T
Updated by:
Brian T
Employee Noah M
Updated by:
Noah M

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