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Miro-Flex Thinline LED Trailer Clearance or Side Marker Light - Sumbersible - 4 Diodes - Amber Lens
Optronics

Miro-Flex Thinline LED Trailer Clearance or Side Marker Light - Sumbersible - 4 Diodes - Amber Lens

Part Number: MCL63AB
In Stock
$10.12
Trailer Lights
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4-1/16" x 1-1/4". Waterproof, LED trailer light serves as either a side marker light or clearance light. Miro-flex reflector increases light output. Surface mount with bracket (not included). Accepts 1- or 2-prong plug. P2 rated. Great Prices for the best trailer lights from Optronics. Miro-Flex Thinline LED Trailer Clearance or Side Marker Light - Sumbersible - 4 Diodes - Amber Lens part number MCL63AB can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (422)
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Optronics Trailer Lights - MCL63AB

Highlights

  • Reliable In Any Weather: Sonically sealed, waterproof housing keeps water out even when submerged.
  • Compact Fit Anywhere: Thinline 4-1/16" x 1-1/4" profile fits tight mounting spots.
  • Fewer Replacements Needed: 4 LEDs last 50 times longer and draw just 0.051 amps at 12.8V.
  • Brighter, Modern Look: Miro-Flex reflector boosts light output and provides a clean amber glow.
  • Easy Plug Connection: Works with 1- or 2-prong plugs and standard 3" mounting centers.
  • Road Legal: DOT compliant and P2 rated for proper clearance or side marker use.

Features to know about

Brighter and More Efficient Lighting: 4-Diode LED Output

Upgrading to LEDs means you’re getting better visibility without extra power draw. This Miro-Flex Thinline light uses four white LEDs behind an amber lens to produce a bright, even glow while using only 0.051 amps at 12.8V. It’s P2 rated for a focused 90-degree beam, perfect for use as either a clearance or side marker light when properly mounted. You’ll notice a cleaner look and more reliable performance compared to older incandescent setups—no filaments, no burned-out bulbs, just dependable light that lasts.

Avoiding Water Damage: Fully Sealed and Submersible Design

If your trailer ever sees wet roads or boat ramps, this light is ready for it. The polycarbonate housing and lens are sonically sealed into one unit, keeping out moisture and protecting the diodes and circuit board from corrosion. It’s completely waterproof and submersible, so you don’t have to worry about water intrusion cutting your trip short or leaving you with a dark spot on your trailer.

Tight Spaces Made Simple: Low-Profile Thinline Housing

Space can be tight on fenders or frame rails, and this Thinline Series light was built for those spots. Measuring just 4-1/16" long x 1-1/4" tall x 1-1/8" thick, it gives you plenty of mounting flexibility without sticking out or snagging on anything. The 3" center-on-center mounting holes match industry standards, and it surface mounts easily with a bracket like the A65B (sold separately).

Quick Wiring Connections: Standard 1- or 2-Prong Plug Compatibility

No need to chase down specialty parts or rewire your setup. This light accepts industry-standard 1-prong or 2-prong plugs, making it easy to connect with existing wiring harnesses. Once mounted, you’ll have a clean, secure fit that looks like it came that way from the factory.

Built to Last: Durable Construction and Lifetime LED Warranty

The durable polycarbonate housing holds up against vibration and rough use, while the LEDs are rated to last up to 50 times longer than incandescent bulbs. With fewer maintenance needs and no bulbs to replace, you can focus on the road ahead knowing your clearance or side marker light will keep shining year after year.

Specs

Dimensions

  • Overall dimensions: 4-1/16" long x 1-1/4" tall x 1-1/8" thick
  • Distance between mounting holes (center on center): 3"

Technical diagram showing dimensions of Optronics MCL63AB Miro-Flex Amber LED Trailer Clearance and Side Marker Light, including 4-1/16 inch length, 1-1/4 inch height, and 3 inch mounting hole spacing.

Electrical

  • Power draw at 12.8V: 0.051 amps
  • System compatibility: 12V DC

Lighting

  • Diodes: 4
  • Lens color: Amber
  • LED color: White
  • Rating: P2 rated
  • Compliance: DOT compliant

Construction

  • Housing and lens material: Polycarbonate
  • Waterproof: Yes
  • Mount type: Surface mount (bracket not included)
  • Plug type: Accepts 1- or 2-prong plug

Warranty

  • Lifetime warranty: On LEDs

MCL63AB Optronics Miro-Flex Thinline LED Clearance or Side Marker Trailer Light - Sumbersible - 4 Diodes - Rectangle - Amber Lens - P2 Rated

Alternate part number: MCL-63AB





Customer Satisfaction Score:

Ratings & Reviews

4.7

422 reviews
Review sort icon
4-1/16" x 1-1/4". Waterproof, LED trailer light serves as either a side marker light or clearance light. Miro-flex reflector increases light output. Surface mount with bracket (not included). Accepts 1- or 2-prong plug. P2 rated.

by:

Replaced Sealed incandescent lights with LEDs. Couldn’t be happier. Lights are much brighter and have lasted or year so far having been dipped in salt water frequently.



by:

I have not assembled the trailer yet, but the quality of the parts
is good, delivery was quick and the price was great due to the
free shipping. So far my favorite place to buy trailer parts.



by:

THIS is my choice for enclosed trailer clearance lamps . Nice ass’y when used with corresponding mounting base . Same for the RED .



by:

Not what I expected. Lights were not complete. No mounting bases or wire leads. Just two plugs in that plug into nothing. With no instructions, Useless for a new trailer build .



by:

My new lights and harness were easy to attain understand and install. It came with everything I needed to rewire and install new lights in out and around my entire trailer.



by:

Nice lights- they plugged right into the existing light sockets and are much brighter. They seem to be holding up well against wet and snowy weather.

Ann A. profile picture

Ann A.

5/8/2021

A year later and the lights are still nice and bright.



by:

These are exactly what I needed. Installed them the day I received them in the mail.



by:

Perfect replacement for my 2004 OEM lights. I converted the in closed trailer to LED. It’s been around a year and everything is just fine. Remember, quality first price second. [base plate A65PB, LED yellow AL91AB, LED red AL91RB]



by:

I replaced all of the lights on my trailer with LED lights. I wanted to be very visible at night for safety reasons, etrailer helped me out with this. I put a dab of die-electric grease on the contacts as I did this. My trailer is extremely visible at night, now.



by:

Super fast shipping and looks like a quality product!



by:

Snap into the base nicely. Great light.



by:

Great products looks good on Trailor.

Michael profile picture

Michael

5/12/2021

Just fine



by:

Replace for OEM marker light that.



by:

Awesome product at an excellent price I would definitely recommend these for anyone who has a trailer



by:

Not Happy, I want the socket its supposed to be plugged into. I bought this thinking it was a kit.



by:

Lights were exactly what I needed to lower the total draw from the 15 running lights on my trailer that kept blowing out the fuse on my Honda Pilot. And they are brighter than the old style. Easy to install - just pops right in. Thanks



by:

Quality product that fit my needs nicely. Easy install and no problems. Used them for side markers on my motorcycle.



by:

Super service once again, perfect replacement
Thank you



by:

Took great and were a perfect fit. Replaced all the marker lights on my 1998 Alaskan with the amber and red. Don’t forget to get the mounting bracket.



by:

The perfect replacement. Thanks



by:

Excellent service. Even purchasing from Canada I will be back



by:

Absolutely fabulous. Changed out old jack on cargo trailer in a matter of minutes. This jack is of excellent quality and construction, and clearly puts the original jack to shame.



by:

Bright and work great. FYI they didn’t have a ground wire, grounded by chassis. I had to add ground wiring with eyelets for the front cap lights



by:

Works great. Easy direct replacement for old light.



by:

These LED clearance lights are a great upgrade to my 20+ year old trailer. Even when they aren't lit, they shine! My new 2025 Jeep Grand Cherokee has a trailer brake controller that will tell you if a trailer light goes out. It's more sophisticated than my last 7 Jeeps and the amperage is limited to 3.5 amps. With 20 clearance lights plus tail lights and license plate light, the amperage far exceeded the allowed capacity. Swapping everything out for LED's not only solved the problem, but really gave my trailer a new shine!

Victoria H. profile picture

Victoria H.

4/4/2025

Sounds like this was quite the illuminating solution and upgrade to your trailer Rod! The trailer light detection feature on your new 2025 Grande Cherokee is super sleek! I haven't heard of that on any other OEM set up yet. Keep shining bright :)


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    There could be a few things that might be cause your malfunctioning rear sider marker light. You will have to examine a few thighs to determine that issue. Most light today a sealed units that will have to be replaced in full instead of replacing a bulb. First, you will need to remove the light assembly from the side of the trailer and inspect the wire connections. Some of the light will have a removable plug that connects to the back of the light housing. if you have this, then make sure...
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    The Miro-Flex Thinline LED Trailer Clearance or Side Marker Light # MCL63AB that you referenced will work great as a replacement for the clearance light on your trailer frame currently. For a mounting bracket that includes the wiring you'd want the part # A65PB and you'd be set.
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  • Will Black Bracket and Single Wire Plug for Thin Line Series Lights Fit MCL63AB and MCL63RB
    Hey Bernie! Yes, the Black Bracket and Single Wire Plug for Thin Line Series Trailer Clearance and Side Marker Lights # A65PB fits both the # MCL63AB and # MCL63RB. This bracket is required for surface mounting. If you need anything else feel free to reply below.
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  • Chrome Base Recommendation for the Optronics Clearance Light # MCL63AB
    Yes, the Chrome Bracket and Single Wire Plug # A67CB that you referenced is the correct base for the # MCL63AB and # MCL63RB that you plan on getting. The reason this bracket uses a single wire is because the light will ground through the mounting hardware. If you needed to run a second ground wire to the assembly you would only need to run the stripped ground wire around the mounting screw that attaches to the side of the base with the ground strap. See picture I attached to see which...
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  • Will the Optrinics A68PB Bracket Work With the MCL63AB Lights?
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Info for this part was:

Employee Tyler C
Written by:
Tyler C
Employee Patrick B
Video Edited:
Patrick B
Employee Jacob T
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Jacob T
Employee Dustin K
Video Edited:
Dustin K
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Laura H
Updated by:
Laura H
Employee Brian T
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Brian T
Employee Cole B
Installed by:
Cole B
Employee Aidan B
Installed by:
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Employee Kyle M
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