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Miro-Flex Thinline LED Trailer Clearance or Side Marker Light - Submersible - 4 Diodes - Amber LEDs

Miro-Flex Thinline LED Trailer Clearance or Side Marker Light - Submersible - 4 Diodes - Amber LEDs

Item # MCL63CAB
Our Price: $8.94
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Trailer Lights
Shipping Weight: 0.09 lbs
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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 - hardware 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 - Submersible - 4 Diodes - Amber LEDs part number MCL63CAB can be ordered online at or call 1-800-940-8924 for expert service.
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Optronics Trailer Lights - MCL63CAB

  • Clearance Lights
  • Rectangle
  • LED Light
  • Amber
  • 4L x 1W Inch
  • Surface Mount
  • Rear Clearance
  • Side Marker
  • Submersible Lights
  • Optronics

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 - hardware not included. Accepts 1- or 2-prong plug. P2 rated.


  • Rectangular LED trailer light functions as a clearance light or a side marker when properly mounted
  • Miro-flex faceted reflector provides increased light output with contemporary appearance
  • Thinline Series has a low profile so that light can fit in tight spaces
  • 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
  • Clear lens over amber LEDs
  • Compatible with 12V DC electrical systems
  • Surface mounts to trailer with bracket (A65B - sold separately)
  • Accepts industry standard 1-prong or 2-prong plug (A65P or A68P - sold separately)
  • DOT compliant
  • P2 rated


  • Dimensions: 4-1/16" long x 1-1/4" wide x 1-1/8" thick
  • Distance between mounting holes (center on center): 3"
  • Diodes: 4
  • Power draw at 12.8V: 0.051 amps
  • Lifetime warranty on LEDs

Optronics MCL63 Series Miro-Flex Thinline Amber LED Clearance Marker 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.

MCL63CAB Optronics 12V Miro-Flex Thinline LED Clearance or Side Marker Trailer Light - Submersible - 4 Diodes - Amber LEDs - Clear Lens - P2 Rated

Alternate part number: MCL-63CAB

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Miro-Flex Thinline LED Trailer Clearance or Side Marker Light - Submersible - 4 Diodes - Amber LEDs - MCL63CAB

Average Customer Rating:  4.8 out of 5 stars   (303 Customer Reviews)

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 - hardware not included. Accepts 1- or 2-prong plug. P2 rated.


Here is a picture of these in use on the front of my truck, its an unorthodox mounting place and its supposed to be used on a trailer but I really love these things and I have installed them onto another guys truck as well


Have been great in the weather, dont forget the mounting brackets #A65B


Finished ProductThe 6 Amber LED's with clear lenses
are now on my pickup. The 20 amber and red clears will outfit my trailer. I
have attached a pic of the rear of my homesteader ez rider (which mainly
hauls my atv)


Very pleased with the thin Miro- flex side markers. I put them on my 2001 dodge dually and man are they bright. I only wish they offered them in 2 1/2 too. But over all they are well worth buying if your looking for good looking lights on or off.


Very helpful in finding the correct components I needed.


I can say enough about item,it was easy to install and it made my enclosed car trailer look outstanding. I would highly recommend these replacement lights to anyone who would like to upgrade the look of their trailer.


Good folks to work with and very knowledgeable of their products. Great experience


Killer lights, Killer price.


Work great!


the lights are very nice (bright) but the bracket housing that they fit in (plastic based) are really not a very good quality. The snaps on each end that holds the light are not all molded the same and I had one defective one that would not allow the light to snap in therefore the first bump i hit the light itself flew out going down the road and was lost. can't afford to keep replacing lights that simply fall out.


bright, night and day difference between original trailer lights and the LED's!!


Love these lights ! When I leave thr racetrack on Saturday nights everyone stops and stares at my trailer . Better get you some !


Easy to find and order. Shipped quickly and will definitely be back.


I replaced all oem lights on my boat trailer with LED's, easy to install and still burning bright today.


Nice upgrade from the non LED lights on my horse trailer. Love it!


Fast shipping !!




My son just started to do metal fabrication. First project is a utility trailer. I'm letting him do the project with very little help on my part. Althought I want him to get the the best product for the bests price and not get ripped off. We found that with your company.The customer service was excellent.


exact product I ordered, matches the rest on the trailer & it got here very quickly


All items look perfect. Just as described. In fact some are the same as on trailer now.


Easy to install (with those bases you have to buy). The click right in. Pretty bright too.



I have to press them back into the bases a bit every now and again but they are still bright and look great. Very pleased.


Works as advertised. Puts out a lot of light!


While etrailer's products have been good so far (I have ordered several items lately), what really pleases is their quick and pleasant service. Always easy to deal with, and that makes a difference.


good looking light and very bright

Kenny U.


All still fantastic


Great Lights with no maintenance

Bruce H.


Great Product - No Issues

Show More Reviews

See what our Experts say about this Optronics Trailer Lights

  • Small Rectangle Trailer Light that Can do Stop/Turn/Tail
    The closest light we offer in the dimensions you seek that can do stop/tail/turn is the part # ST31RB which is 4-1/2 inches by 2-1/2 inches. It grounds through the mounting hardware, that is why it only has 2 wires.
    view full answer...
  • Trailer Amber Clearance Light with a Clear Lens
    Replacement lenses are not available for the MC71 series of trailer lights. The remaining option is to replace the whole light. For something that has a clear lens with amber lights you will need to use an LED light such as: # MCL63CAB # MCL13CA2B # MCL65CAB # AL91CAB
    view full answer...
  • Availability of a Clear LED Trailer Clearance Side Market Light
    The closest match we have to the mini rectangular LED trailer clearance trailer side marker light # MCL95AB is the Optronics sealed, LED mini utility light # UCL13C2PG. It's 2-1/2 inches long and 1-1/16 inches wide. Other potential options to consider: # MCL13CA2B # MCL63CAB # MCL65CAB # AL91CAB I included an informative article and several video reviews too.
    view full answer...
  • Recommended Trailer LED Taillights for a 1961 Airstream Camper
    The fact that your trailer uses single wire assemblies for the running lights indicates that the assemblies are intended to ground through the mounting hardware. Which is interesting since the trailer is aluminum. For red surface mounted LED clearance lights the part # MCL63CRB that you referenced would work well, for the amber version part # MCL63CAB. For an install plug you would want part # A68P and then for a bracket part # A65B. Or for an entire kit that comes with everything you...
    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...
  • Chrome, Two-Wire Mounting Bracket for the Optronics Clearance Light MCL63CAB
    Sounds like you are wanting to use the part # A67CB with the clearance light part # MCL63CAB. There's no reason you couldn't, this bracket is designed for trailers that ground through the mounting hardware though. If that wouldn't work on your trailer you would just need to run a wire from the mounting screw that runs through the ground strap and the light would work just fine.
    view full answer...
  • Chrome Mounting Bracket Recommendation for a Miro-Flex, Thin Line, LED Light MCL63CAB
    Yes, the # A67CB mounting bracket that you referenced will fit and work well with the # MCL63CAB that you referenced. This is a chrome bracket that grounds through the mounting hardware. The single wire that runs to it is the power wire.
    view full answer...
  • Best RV or Trailer LED Amber Porch Light
    There isn't an amber version of light # ILL70CCSBAWN but we have lights that are similar such as # MCL63CAB. Considering what you are using the light for I actually recommend RV Porch/Utility Light # 328-007-30SAPE. This is an amber LED light designed as a porch light and it features an on/off switch on the light itself. I have linked a video review of this light for you.
    view full answer...
  • How is Sealed, Miro-Flex, Thin Line, LED Trailer Marker/Clearance/ID Light, # 12855, Wired
    Sealed, Miro-Flex, Thin Line, LED Trailer Marker/Clearance/ID Light, # 12855, requires a bracket to mount the light. The light itself can plug into the bracket and ground through the mounting hardware. One possible bracket is the Chrome Bracket and Single Wire Plug for Thin Line Trailer Clearance and Side Marker Lights, # A67CB. If you are unable to ground the light through mounting hardware, you can use Two Wire Plug for Thin Line Series Trailer Clearance and Side Marker Lights, # A68P....
    view full answer...
  • Mounting Base and Wiring Harness for Optronics Clearance Light # MCL63CAB
    There are different bases you can use for clearance light # MCL63CAB. You can use base # A65B that you have referenced. For that particular base you would use wiring harness # A68P. We also have base # A65PB or # A66PB. With these you would use wiring harness # A65P with the single wire because the light will ground through the mounting studs of these bases.
    view full answer...

Do you have a question about this Trailer Light?

Info for this part was:

Employee Tyler C
Written by:
Tyler C
Employee Patrick B
Video Edited:
Patrick B
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Adele M
Updated by:
Adele M
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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