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Optronics LED Trailer Clearance or Side Marker Light - Submersible - 6 Diodes - Red Lens - 24V

Optronics LED Trailer Clearance or Side Marker Light - Submersible - 6 Diodes - Red Lens - 24V

Item # MCL66R24B
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Optronics Rectangle Trailer Lights - MCL66R24B
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4" x 1" Rectangle. Waterproof, LED trailer light serves as either a side marker light or a clearance when properly mounted. Durable polycarbonate lens and housing. Surface mount on trailer - hardware not included. 2-Wire design. P2 rated. Lowest Prices for the best trailer lights from Optronics. Optronics LED Trailer Clearance or Side Marker Light - Submersible - 6 Diodes - Red Lens - 24V part number MCL66R24B can be ordered online at etrailer.com or call 800-298-1624 for expert service.
  • All Info
  • Reviews (1898)
  • Q & A (8)
  • Photos
  • Why etrailer?

Optronics Trailer Lights - MCL66R24B

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

4" x 1" Rectangle. Waterproof, LED trailer light serves as either a side marker light or a clearance when properly mounted. Durable polycarbonate lens and housing. Surface mount on trailer - hardware not included. 2-Wire design. P2 rated.


Features:

  • Rectangular LED trailer light functions as a clearance light or a side marker when properly mounted
  • 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
  • Red lens over white LEDs
  • Compatible with 24V DC electrical systems
    • Will also work with 12V DC system but with reduced light output
  • Surface mounts to trailer - hardware not included
  • 2-Wire design includes power lead and ground wire
  • DOT compliant
  • P2 rated


Specs:

  • Dimensions: 4" long x 1" wide x 1-3/16" thick
  • Distance between mounting holes (center on center): 3"
  • Diodes: 6
  • Power draw at 12.8V: 0.057 amps
  • Lifetime warranty on LEDs


Optronics MCL66 Series 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.



MCL66R24B Optronics 24V LED Trailer Clearance or Side Marker Light - Submersible - 6 Diodes - Red Lens

Alternate part number: MCL-66R24B




California residents: click here



Customer Reviews

Optronics LED Trailer Clearance or Side Marker Light - Submersible - 6 Diodes - Red Lens - 24V - MCL66R24B

Average Customer Rating:  4.9 out of 5 stars   (1898 Customer Reviews)

4" x 1" Rectangle. Waterproof, LED trailer light serves as either a side marker light or a clearance when properly mounted. Durable polycarbonate lens and housing. Surface mount on trailer - hardware not included. 2-Wire design. P2 rated.

- MCL66R24B
by:

Have been dealing with etrailer for a while. Always seem to have what I need to take care of my customers. Great staff that is always very helpful. Products they carry are top of the line quality and good pricing.



- MCL66R24B
by:

Great Product. Great people to work with. Great customer service.



- MCL66R24B
by:

Good quality and quick delivery.



- MCL66R24B
by:

I like the looks of the product was a ease to hook up and work great for what it is being used for. The light is being used in a MC9 tour bus that iam redoing I used it for the restroom light to let someone no the restroom is being used, the current light was in bad shape. The bus is 24 volts system and I rate it to be excelient and the fast delivery of the product to me and price Thanks Etrailer for your product



- MCL66R24B
by:

We were looking for lights that we could use on a trailer so it could be towed by a truck with either a 12 or 24 volt electrical system. These lights answer that need. They appear to be well made and are very bright.



- MCL66R24B
by:

Great product holds up is all weather conditions and very bright will buy again in future thank you



- MCL66R24B
by:

Looks great on my tractor.



- MCL66R24B
by:

Product as described and fast shipping! Excellent supplier!



- STL59RB
by:

Review from a similar Thinline in Trailer Lights


Great light, very bright. Only thing is wires aren't labeled to the function they control. Only complaint is length, I wish the light was 3-4 inches shorter.


Comments
The wiring functions for each wire on this light are: White wire for ground, Black wire for tail light, and Red wire for turn signal.
-- Etrailer Expert Victoria B - 02/14/2020

Comments
Excellent, not one issue
Ben C - 02/14/2021


- STL59RB
by:

Review from a similar Thinline in Trailer Lights


I was looking for lights to add to a receiver hitch cargo carrier for nighttime visibility. These were perfect for size and function. The housings were sturdy, the wiring was sealed and they worked on the first try, as tail lights, turn signal and brake lights. Would definitely recommend these!


Comments
Still working perfectly 1 year later!!
Jay C - 09/02/2020


- STL59RB
by:

Review from a similar Thinline in Trailer Lights


The day pic's were from 6:30 p.m. 06/07/19. Notice you can't see the stock taillights from 10 ft. away. Hence my purchase of these LED lights for the angle iron uprights. The night pic's are 2 ft. from my garage door at 9:30 p.m., 06 07/19, and this is what drivers behind me will see. These LED's are slim, well made, water proof, and attach like a breeze. I LOVE THESE LIGHTS!!!!!! As I told Carol, the pigtail wires should be 11/2 to 2ft. instead of 8". My only downside to these lights. I Have 3 trailers and from now on etrailer.com is my go to site!! Thanks a million, great product.


Comments
Fantastic! Same as above.
Ronald R - 06/08/2020


- STL59RB
by:

Review from a similar Thinline in Trailer Lights


These tail lights work great on my custom built wheelchair trailer. They are bright, easy to mount and function as needed. They've been on the trailer for a year with regular use and no problems to date.



- STL59RB
by:

Review from a similar Thinline in Trailer Lights


The lights were awesome. We added them to the back of a 16' flatbed trailer just under the back lip. The lights were in addition to the regular taillights. The idea was if someone was to close to see the side lights , they could see these from the back. They were also easy to install, we just tapped into the regular taillights. We are thinking about adding these to our dump trailer as well.


Comments
Still great 1 year later. Awesome buy.
Louis O - 01/03/2021


- MC65AB
by:

Review from a similar Thinline in Trailer Lights


I bought these incandescent for my leeisurelite trailer so i could stop hyperflashing. My trailer worked o k on 2014 limited but not 2017 cvo limited. When u have a cvo the bcm is totally different. Badlands and custom dynamic don't have a load equilizer for cvo. I put these lights on the front of my trailer and didn't have a problem. I couldn't put a Universal 5.6 Ohm Turn Signal Load Equalizer for Harley-Davidson® because they heat up. I couldn't put it inside the trailer (heat)or the outside because not waterproof. The incandescent lights work. Cheap and the easiest fix. I also had a isolator harness.


Comments
O K no problems
Jim K - 02/27/2021


- STL59RCB
by:

Review from a similar Thinline in Trailer Lights


I wish I would have discovered etailer.com and specifically this light 2 months ago! I am redoing a snowmobile trailer and wanted to update the lights. I have less than 2” to work with. After ordering multiple style of lights I finally discovered thin light gold! This saved my project and works great! Now all I need is snow!


Comments
It has been over a year since my purchase from etrailer.com and the lights still work great! I have put these lights to the test and they have held up wonderfully! Couldn’t be more happy! I will definitely be a return customer for future projects!
Luke - 11/28/2019



- STL64RB
by:

Review from a similar Thinline in Trailer Lights


Product was as I was hoping for. Fast delivery and product was just as I expected. Install was an easy install and gives the rear of the trailer the added lighting that I wanted for other vehicles to be able to see my intentions when changing lanes and stopping. Am very satisfied with the purchase and if I need more lighting Etrailer is were I will purchase. All the lighting will be changed at some point including LED side lighting. Prices at Etrailer are some of the cheapest that I have found for quality lighting.


Comments
The lights are still operating as good as the day I installed them. They definitely brighten up the rear of the car hauler that I installed them on.
Cary - 11/23/2020


- STL264RB
by:

Review from a similar Thinline in Trailer Lights


Just what I needed to add an additional safety/signaling light in a car towed on a car dolly. The lights show very clearly through the tailgate window.



- STL59RB
by:

Review from a similar Thinline in Trailer Lights


I wanted additional brake light visibility higher up on rear of my camper. The STD lights were low and partly obscured if I was hauling bikes on their rack. There was no good way to run wiring inside and I didn't want holes as possible leak points. So I mounted these thin, bright LED lights high along outer edges, connected wiring to existing brake lights, encasing wiring in heat shrink tubing and siliconed all in place. Looks good, works great!



- MCL75AB
by:

Review from a similar Thinline in Trailer Lights


I decided it was time to repair the lighting on a 15 year old trailer due to several being broken, and the rest being very faded. I spent quite a bit of time on etrailer comparing options I finally settled on the 4 diode led's. I was excited to see the difference but was ultimately dissapointed with my decision to swap out the old incandescent with more costly led's as the new led lights put out significantly less light. As u can see in the pictures I did the passenger side first, then I took pics halfway thru. If u look at the driver side with old lights it has alot more light even though it only has only 2 working lights, compared to the 4 on the new side! In the front shot u can see the old on the right is casting 10 times the amount of light on the ground. On the plus side at least the orange is now orange, and the red is red instead of almost clear. I will say the shipping was very fast, and the the customer service was awsome as always.



- MCL75AB
by:

Review from a similar Thinline in Trailer Lights


These made swapping my horse trailer over to led lights a breeze! Arrived quickly and as usual great customer service from etrailer Staff!



- STL69RB
by:

Review from a similar Thinline in Trailer Lights


The lights are still working well. The installation was a bit of a bother because there were 4 wires on the original, 3 on the replacement. After some rewiring, it worked fine. It required a little cutting away of the RV wall to allow a small part of the back of the light to go through so the light was flush with the wall, but it wasn't that hard. The lights are bright and add a bit of safety to driving the RV in the dark.



- MCL67AB
by:

Review from a similar Thinline in Trailer Lights


These lights went in nicely and have proven to be reliable. Thank you.



- UCL59CB
by:

Review from a similar Thinline in Trailer Lights


28 foot enclosed with 7 UCL59CB lights went from dark to bright. Slim design with a mounting screw hole at each end.


Comments
With 1000s of hrs loged , still burning bright every day with not 1 issue...
Brad T - 03/15/2020



- STL76RB
by:

Review from a similar Thinline in Trailer Lights


I bought this to replace the third high mount brake light on my 4 Runner. I wanted a brighter light due to the large number of drivers on cell phones and not paying attention to traffic. This light is at least 8 to 10 times brighter and is absolutely perfect. I mounted it directly on top of the existing light and just drilled a hole through that light to run the wires. I used two sheet metal screws to secure it to the frame and filled the open space in with clear caulk. I did not use the existing mounting hole because I wanted to aim the light into the face of the driver behind me. Seriously, we have a real problem with drivers on cell phones. Shipping was fast. I was stunned that the light was packed for shipment in 3 hours on a Sunday morning. You people should really take Sunday off.


Comments
One year later and this light still looks brand new. It survived an unusually harsh winter with no problems. It is definitely a FIVE STAR LIGHT.
Bubba i - 10/23/2014


- STL64RB
by:

Review from a similar Thinline in Trailer Lights


I have a 2010 international trailer. I was unable to find exact match parts so I went to etrailer to find comparable parts. These 3 way tail lights were 5 inches longer, as posted in the description, than the ones that were on previously. I just drilled a new hole each for the wires and one screw and used one of the previous screw holes. These lights are bright and I was happy with the flush fit on the trailer.


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Ask the Experts about this Optronics Trailer Lights




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Info for this part was:

Employee Tyler C
Written by:
Tyler C
Employee Cole B
Installed by:
Cole B
Employee Sarah W
Updated by:
Sarah W
Employee Brian T
Updated by:
Brian T

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