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Thinline LED Trailer Clearance or Side Marker Light - Submersible - 3 Diodes - Clear Lens
Optronics

Thinline LED Trailer Clearance or Side Marker Light - Submersible - 3 Diodes - Clear Lens

Part Number: MCL65CRB
In Stock
$9.62
Retail:$19.20
You Save: 50%
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3-15/16" x 1-1/4" Rectangle. Waterproof, LED trailer light serves as either a clearance or side marker light. Durable polycarbonate housing and lens. Surface mount to trailer. Accepts standard 1-prong or 2-prong plugs. P2 rated. Red LEDs. Great Prices for the best trailer lights from Optronics. Thinline LED Trailer Clearance or Side Marker Light - Submersible - 3 Diodes - Clear Lens part number MCL65CRB can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Optronics Trailer Lights - MCL65CRB

Highlights

  • Reliable In Any Weather: Sonically sealed housing keeps water out for long-lasting use.
  • Fits Tight Spaces: Thinline 3-15/16" x 1-1/4" design mounts easily where clearance is limited.
  • Fewer Replacements Needed: LEDs last 50 times longer and use less power than bulbs.
  • Bright, Efficient Output: 3 red diodes draw only 0.048 amps at 12.8V for strong visibility.
  • Simple Plug Connection: Works with standard 1- or 2-prong trailer light plugs.
  • Road Legal: DOT compliant and P2 rated for proper clearance or side marker function.

Features to know about

Brighter and More Efficient Lighting: 3-Diode LED Design

This Thinline LED light uses three red diodes to deliver bright and even illumination while drawing only 0.048 amps at 12.8V. Compared to older incandescent lights, the LEDs last up to 50 times longer, put out a cleaner light, and use less power. That means less strain on your trailer’s electrical system and no more replacing burnt-out bulbs or dealing with fragile filaments.

Tight Mounting Spaces Made Easy: Low-Profile Thinline Design

When space is limited, this light’s slim profile fits where bulkier housings can’t. Measuring just 3-15/16" long, 1-1/4" tall, and 7/8" thick, it mounts neatly on tight surfaces without sticking out. It accepts standard 1-prong or 2-prong plugs and surface mounts with a compatible bracket (A65B – sold separately), making it straightforward to add or replace lights in confined areas.

Water Exposure Solved: Fully Sealed and Submersible Construction

Worried about moisture or water intrusion? The polycarbonate housing and clear lens are sonically sealed into one waterproof unit, keeping internal components safe from corrosion or shorts. Even when submerged, the light stays protected—perfect for trailers that see rain, spray, or ramp launches.

Reliable Functionality and Compliance: P2-Rated for Defined Beam Coverage

Each P2-rated light produces a 45-degree beam to either side of its centerline for a total of 90 degrees of coverage. That pattern makes it ideal as either a clearance or side marker light when properly mounted. It’s also DOT compliant for dependable visibility that meets safety standards.

Built to Last: Durable Housing with Lifetime LED Warranty

The tough polycarbonate construction resists cracking and wear from vibration or impact. Since the LEDs are solid-state, there are no filaments to fail—and they’re backed by a lifetime warranty. Once installed, you can count on this light to keep shining trip after trip without maintenance headaches.

Specs

Dimensions

  • Length: 3-15/16"
  • Height: 1-1/4"
  • Thickness: 7/8"

Technical diagram of Optronics MCL65 Series Thinline LED Trailer Clearance and Side Marker Light showing rectangular shape and labeled dimensions 3-15/16 inches by 1-1/4 inches.

Electrical

  • Power draw at 12.8V: 0.048 amps
  • System compatibility: 12V DC

Lighting

  • Diodes: 3
  • Lens: Clear lens over red LEDs
  • Rating: P2 rated

Construction

  • Housing and lens material: Polycarbonate
  • Mount type: Surface mount
  • Waterproof: Yes, sonically sealed and submersible

Connection

  • Plug compatibility: Accepts standard 1-prong or 2-prong plugs

Compliance and Warranty

  • DOT compliance: Yes
  • Warranty: Lifetime warranty on LEDs

MCL65CRB Optronics Thinline LED Trailer Clearance or Side Marker Light - Submersible - 3 Diodes - Rectangle - Clear Lens with Red LEDs - P2 Rated





Customer Satisfaction Score:

Ratings & Reviews

4.8

2627 reviews
5 Stars
(2356)
4 Stars
(188)
3 Stars
(38)
2 Stars
(18)
1 Star
(27)
Review sort icon
3-15/16" x 1-1/4" Rectangle. Waterproof, LED trailer light serves as either a clearance or side marker light. Durable polycarbonate housing and lens. Surface mount to trailer. Accepts standard 1-prong or 2-prong plugs. P2 rated. Red LEDs.

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fast and easy



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Excellent product and service!



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Exactly what I ordered and expected.



by:

Great web site, Great service!



by:

Great lights. Just as expected



by:

worked great



by:

Average light output



by:

So far so good.



by:

Brighter than regular non-LEDs. Reviews on this and similar products are misleading. Order them, you won't be let down!



by:

One year and still works great



by:

It fit perfectly and has worked flawles sly.



by:

Whenever we order from these guys the order is delivered quick and we've never had a problem with anything missing. Great fulfillment and good pricing on top quality products and they get it here quick.
Thanks,
Dave



by:

These lights are AWESOME and bright. Been running them for a Year no problems.



by:

GREAT PRODUCT AT A GREAT PRICE!



by:

This light was exact match for Featherlite Trailer original equipment.
replaced the broken light looks and works like new



by:

Great products,GREAT service and fast shipping!! 5 star rating !! Thank you etrailer!!



by:

Works great and fit perfect on 2008 and 2006 Feather-Lite trailer

Phil S. profile picture

Phil S.

1/2/2018

Still working great. No issues



by:

Great price, worked as advertised.



by:

etrailer always have my parts, great service and advice. Items arrive very timely, and have never had a back order.

Great company to do business with.

Robert W. profile picture

Robert W.

1/19/2018

To answer your question, the lights are still working well on the enclosed car trailer. Getting it ready for inspection and we will then be ready for another car show season.



by:

Used to replace standard incandescent bulb housing for identification lights on my trailer. Easy to swap the new ones in, and they have great light output.


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See what our Experts say about this Optronics Trailer Lights

  • Replacement License Plate Light For Light # LP2PC.88
    The Peterson Clearance and Side Marker Trailer Light # M152R will be the closest option we have for you. The 2 inch lens has male terminals on the back which accept a 2-wire female plug. If you need the Amber Light you will need the # M152A. If you have any further questions please feel free to reach back out to me anytime and I would be more than happy to further assist you.
    view full answer...
    Image 1 for
  • Replacement LED License Plate Light For Incandescent Light On a Yakima Rack and Roll Trailer
    The Thinline LED Light # MCL65CRB will allow you to replace the Incandescent Light # M154C which comes with the License Plate Kit # 8880166 for the Yakima Rack and Roll trailer. The light housing is sealed to keep water out so it must be replaced as a unit.
    view full answer...
  • Red and Amber Trailer Clearance Lights with Clear Lenses
    You are correct, clear lenses are not made for lights # MC32AB or # MC32RB. The bulbs for both of these lights produce white light so if clear lenses were on them the light would just be white. Unless you found colored bulbs that would fit. We do have red and amber marker/clearance lights with clear lenses though. For example we have # MCL63CAB which is an amber LED light with a clear lens. Other amber options include # MCL13CA2B, # MCL51CAK, # MCL65CAB, # AL91CAB, # MCL17CAB, # 00212336P,...
    view full answer...
  • Recommended Trailer Clearance Light With Clear Lens
    We do offer a clearance and side marker lights that may work for you. I have attached a helpful article that explains trailer lighting and what is required. One clearance light with a clear lens I recommend is part # DG52530VP. This is a surface mount light that has a clear lens with white diodes and a thin black base. This is a 2-wire light and measures 2-5/8 inches L x 1-1/4 inches W x 3/4 inch H. Another clearance light we offer with a clear lens that has 2-LED amber diodes is part...
    view full answer...
  • Are Thinline LED Trailer Clearance Lights Polarity Sensitive
    LED lights like the Thinline LED clearance light part # MCL65CRB are polarity sensitive but the good news is that you won't damage them if you wire them up backwards. They just won't work.
    view full answer...
  • Availability of Trailer Taillights # MCL-65CARB and # MCL-65CRB
    We do have that taillight part # MCL65CARB and the # MCL65CRB you are looking for. Our part numbers just don't have the dash in them.
    view full answer...
  • Looking for a White LED Trailer Utility Light
    Happy to help Jim, The Optronics ThinLine Clearance or Side Marker Light # MCL65CRB does have a clear lens but it lights up in red. If you're looking for a clear lens with white LEDs, the closest option is the Optronics ThinLine LED Utility Light # UCL65CB. This light has the same ThinLine design but uses white LEDs behind a clear lens. If you also need the mounting hardware, the Black Bracket and Single Wire Plug # A65PB is the correct bracket and wiring pigtail for the Thin Line series...
    view full answer...
  • Comparison Between Optronics LED Clearance Light # MCL65RB and # MCL65CRB
    We have found that the # MCL65RB is a bit brighter. The white LEDs seem to penetrate the red lens better than the red LEDs through the clear lens of the # MCL65CRB. You can see this pretty clearly in the product demonstration videos I have linked to. There is a black # A65PB or chrome finish # A67CB mounting bracket available. The mounting bracket features a power wire, and would provide a ground connection via its connection to the trailer frame. If the lamp is not being directly mounted...
    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 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 Cole B
Installed by:
Cole B

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