Thinline LED Clearance and Side Marker Light w/ Chrome Bezel - Submersible - 3 Diodes - Red Lens

Thinline LED Clearance and Side Marker Light w/ Chrome Bezel - Submersible - 3 Diodes - Red Lens

Item # MCL-91RK

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Optronics Red Trailer Lights - MCL-91RK
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Product Images

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  • Clearance Lights
  • Rectangle
  • LED Light
  • Red
  • Surface Mount
  • 2-1/2L x 1W Inch
  • Submersible Lights
  • Optronics
2-1/2" x 1-3/16" Rectangle. Waterproof, LED trailer light serves as a side marker or clearance light when properly mounted. Chrome housing provides a finished look. Surface mount to trailer - hardware inclued. 1-Wire design. PC rated. Lowest Prices for the best trailer lights from Optronics. Thinline LED Clearance and Side Marker Light w/ Chrome Bezel - Submersible - 3 Diodes - Red Lens part number MCL-91RK can be ordered online at etrailer.com or call 800-298-8924 for expert service.


  • All Info
  • Reviews (673)
  • Q & A (7)
  • Videos (1)
  • Photos
  • Why etrailer?

Optronics Trailer Lights - MCL-91RK

2-1/2" x 1-3/16" Rectangle. Waterproof, LED trailer light serves as a side marker or clearance light when properly mounted. Chrome housing provides a finished look. Surface mount to trailer - hardware inclued. 1-Wire design. PC rated.


Features:

  • LED trailer light functions as a clearance light or side marker when properly mounted
  • 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
  • Chrome housing provides a finished look
  • Red lens over white LEDs
  • Compatible with 12V DC electrical systems
  • Surface mount to trailer with included hardware
  • Single wire design grounds through mounting hardware
  • DOT compliant
  • PC rated


Specs:

  • Dimensions: 2-1/2" long x 1-3/16" tall x 7/8" thick
  • Distance between mounting holes (center on center) 2"
  • Diodes: 3
  • Power draw at 12.8V: 0.051 amps
  • Lifetime warranty on LEDs


Optronics AL91 Series LED Clearance Marker with Chrome Housing 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.


PC-Rated Lights

Diagram of light spread for PC rated light

A PC-rated light produces a 90-degree angle of light to either side of its centerline for a total of 180 degrees of coverage. This beam pattern can be clearly seen when you are standing directly in front of the light, as well as when you are standing on either side of the light. When properly installed, this type of light can function as both a front clearance light and a side marker light or as a rear clearance light and side marker light.



MCL91RK Optronics Mini Thinline 12V LED Clearance and Side Marker Trailer Light w/ Chrome Bezel - Submersible - 3 Diodes - Red Lens - PC Rated






California residents: click here


Video of Thinline LED Clearance and Side Marker Light w/ Chrome Bezel - Submersible - 3 Diodes - Red Lens


Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Optronics Trailer Lights - Clearance Lights - MCL-91RK Review

Today we're going to be taking a look at part number MCL-91RK. This is the Optronics Mini Thin Line Sealed LED, Red, Marker and Clearance Light. It's going to be sonically sealed, that means it's going to be waterproof. It's going to have the red lens with a chrome housing. It's all combined in a single unit. You can see here that you're also going to get the plug and the hardware to get this mounted down. Taking a look at the measurements real quick it's going to give us an overall length, measuring from edge-to-edge, from the outside of the housing to the outside of the housing on this side is going to be 2-3/4". The actual light itself is going to measure about 2-1/2".

The width is going to give us a measurement, edge-to-edge of the housing of about 1-3/8". The overall height is going to measure about 7/8". Here on the backside are going to be your mounting holes, you can see those two right there. If we take a measurement center on center of the distance between the mounting holes that's going to be right on 2". This light does meet the requirements of SAE, DOT FMVSS and CMVSS. It's going to be designed for 12 volt systems.

It is an LED system so you don't ever have to worry about changing the lights. Optronics is going to cover this with a lifetime warranty on the LED's. It's going to ground through the mounting hardware and mounting locations. I want to go ahead and show you how this system connects and how it looks with power running to it. You can see here that we have a plug, right here.

On the other side of the light, right below my finger, there's going to be another plug. We only use one at a time. Whatever plug we're not using is going to be covered up by this protector right here. We'll go ahead and plug in the included wire. You simply just push into the slot there. Push it in for a nice, tight connection.

Then we'll go ahead and hook this up to our external power. I'm going to have to ground it through our mounting hardware. I'm going to make the power connection. I'm going to place my ground wire around my hardware. You can see here that it sends out a nice consistent LED signal. It looks like it has three diodes which are going to be the three LED's. It sends out a nice signal output. It's also going to have a quick response time too. That's another advantage of the LED systems. That's going to do it for today's review of part number MCL-91RK. This is the Mini Thin Line Sealed LED Red Marker and Clearance Light from Optronics. .


Customer Reviews

Thinline LED Clearance and Side Marker Light w/ Chrome Bezel - Submersible - 3 Diodes - Red Lens - MCL-91RK

Average Customer Rating:  4.9 out of 5 stars   (673 Customer Reviews)

2-1/2" x 1-3/16" Rectangle. Waterproof, LED trailer light serves as a side marker or clearance light when properly mounted. Chrome housing provides a finished look. Surface mount to trailer - hardware inclued. 1-Wire design. PC rated.

- MCL-91RK
by:

Products always as advertised... Great company to buy from, with fast shipping service. 663611



- MCL-91RK
by:

Easy install, much brighter than the old lights. 643648



- MCL-91RK
by:

Good price, good quality 620084



- MCL-91RK
by:

Great service and prompt delivery 590521



- MCL-91RK
by:

Good quality lights, installed easily enough. I used #8x3/4" flat head, self tapping screws as I thought the ones include were a bit too small. Be sure to drill the hole that your power wire runs through at an over size. Otherwise the power connector on the back of the light can ground out on the trailer frame, shorting out everything or over heating your wiring. 544983



- MCL-91RK
by:

Having no problem with product. 538620



- MCL-91RK
by:

Really great product. They make a good upgrade. 492885



- MCL-91RK
by:

Works great 483861



- MCL-91RK
by:

works great, nice fit 386917



- MCL-91RK
by:

Very happy with the lights I purchased. Being LED they are quit a bit brighter then the old ones that came with the trailer. Was very happy with Etrailer in the quality of the product and the quick turn around. 340537



- MCL-91RK
by:

Great products! Fast shipping. Very satisfied. I have already installed them on my trailer. Thanks again 308797



- MCL-91RK
by:

Nice led lights look great 270850



- MCL-91RK
by:

Great Product . TY . 270325



- MCL-91RK
by:

A very bright LED marker light for my boat trailer. 269769



- MCL-91RK
by:

Great service and delivery. I was amazed at the assortment available. If you can't find it here you probably don't need it. I will recommend this site to anybody needing trailer components. 247435



- MCL-91RK
by:

everything went as promised. nice to do business with a company that does what they say they can do. 241791



- MCL-91RK
by:

Easy to install, nice upgrade. 229405



- MCL-91RK
by:

These folks have the knowledge and expertise with great prices. They take the time to explain too. Like to see free shipping on the lower price items or coupons if possible. Will use again. 220842



- MCL-91RK
by:

finding parts was a snap, replied to order immediately, tracking package was effortless arrived on time in excellant condition. thanks steve F. 217467



- MCL-91RK
by:

Lights were easy to install and really bright. 214902



- MCL-91RK
by:

Brighter than old incandescent lights. Easy to install and all hardware was included. Sealed and submersible for marine trailer use. 173513



- MCL-91RK
by:

Terrible push in connection. Had to use heat shrink to keep in place and protect. Very bright but I would purchase different item based on the connection. 143833



- MCL-91RK
by:

Great product! 123200



- AL91AB
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


fast service great product good price t hanks 553817



- MCL-91AK
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


The LED lights are very good - very bright - but the mounting hardware to fit on a plastic boat fender is far from satisfactory. Two screws came with the lights which just won't work on pre-drilled holes from the previous lights. So a trip to the hardware store was my next step to purchase nuts, bolts and washers. 274008



- AL91AB
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


Lights are a direct replacement for my trailer lights. Lights are much brighter than the original were. 124433


Comments

Lights still working great after a year of use.

George W - 04/12/2015

10771

- AL91RB
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


I cant tell you how disappointed I am...........that I did not find out about etrailer.com until now. The LED marker lights that I installed on my Haulmark Lowhauler are simply amazing. They are brighter than the big name companies truck lites out there that I had bought. It is too late for me to return my other lites but I went ahead and changed all the lights on my Nautique boat trailer with your products. It is the difference between night and day. Thanks for the great products. You have gained a NEW LOYAL customer. Speaking of that... I placed another order today. Thanks again!! 73758



- MCL-91AK
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


The lights are excellent, a direct replacement. i ordered lights with the chrome frames but not really thinking I would actually use the frames, however trying to get the old lights out required either breaking them or the old plastic frames. Only 4 stars because the new frames require drilling new holes. I went through many websites and even yours I wasn't completely sure I was getting the right lights until they arrived. 317274



- AL82AB
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


Exactly what I was looking for. Great communication and interactive video describing lights. I have made several purchases from etrailer and every order has been to my complete satisfaction. Customer service is second to none. 555988



- AL91RB
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


Product exactly as advertised, arrived earlier than estimated, easily installed and operating perfectly. Good folks to deal with. 565750



- AL91RB
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


Excellent replacement products for the bullet bass boat trailer. Upgraded all trailer lights to LED. 569046



- AL91AB
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


Boat Trailer: Following a highly successful conversion of the brake/tail & DOT lights, I went ahead with changing the amber running/side maker lights. Working with Hally made ordering smooth and simple. The parts arrived via USPS as expected in excellent condition. The new LEDs fit perfectly into the OEM housing, so I chose not to change them at this time. THe difference in illumination is just outstanding!!! I will definitely use eTrailer again with two great experiences on this project. Seeing the outcome, I cannot explain why it took me so long to decide to convert. 566618



- AL91RB
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


I needed a replacement LED Tribar module and discovered etrailer.com. Great website, quick service. 220277


Comments

On three separate occasions, the modules have become disconnected and fallen off the tribar. Initially, I thought it was a fluke. After the third time I replaced the entire tribar with a metal one with permanently affixed modules. Additionally, the plastic around the mounting screw broke off leaving the tribar dangling.

Steve H - 08/18/2016

20360

- MCL-91AK
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


Parts were delivered quickly and worked well 320291



- AL91RB
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


Was disappointed but probably my own fault. I thought it was a mountable light but it is not. For such a cheap price wasn't worth sending back. 563695


Comments

The lamp you purchased is mountable when used with the # A91BOB
Mounting Bracket for Optronics A91, AL82, AL90, AL91, or AL191 Series Lights - Open Back - Black
$3.80
mounting bracket and the # A46PB
Right Angle 2-Wire Pigtail for Optronics Trailer Lights - 2-Prong PL-10 Plug - 6" Lead
$1.18
wire pigtail.

-- Mike L - 09/11/2018

43476

- AL91AB
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


I cant tell you how disappointed I am...........that I did not find out about etrailer.com until now. The LED marker lights that I installed on my Haulmark Lowhauler are simply amazing. They are brighter than the big name companies truck lites out there that I had bought. It is too late for me to return my other lites but I went ahead and changed all the lights on my Nautique boat trailer with your products. It is the difference between night and day. Thanks for the great products. You have gained a NEW LOYAL customer. Speaking of that... I placed another order today. Thanks again!! 73760



- AL91RB
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


everything was okay what if i wanted the whole light with the base assembly could i buy that also 227104


Comments

Thanks for your review Charles. We do not currently sell the entire light assembly you have requested. But if you check out the items listed as related items on this page you could purchase the components to make a complete light assembly.

-- comment by: Rachael H - 11/09/2015

15832

- AL91AB
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


Much brighter light from all viewing angles than the OEM lights. Easy snap in replacement if it ever fails. The self grounding one-wire base would have made my install easier. The two prong plug I ordered was a tight fit but it worked. I would recommend etrailer. 256594



- AL91AB
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


I had a heck of a time finding this side marker light and as it fit into a specific rubber mount (by another manufacturer) which in turn fit into a specific opening in the trailer's fender and the original light was marked by yet another manufacturer (who no longer makes this model) I was VERY glad to discover Optronics made a perfect replacement. It was exactly as described and fit perfect! The best part is it lights up beautifully! Thanks etrailer, you saved the day!! 147552


Comments

Still working fine after being submersed numerous times.

Roger B - 08/21/2015

14451

- AL82RB
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


I have to say it's an absolute pleasure dealing with etrailer. Not only did my package arrive on time as promised but the experience of dealing with the people at etrailer such as Tommy and Dani made it that much more of fun experience. There was not a problem with answering my questions if they did not know the answer they found out the answer and got back in touch with me. Their prices are great their products are good quality and there's so many good things to say about the company that I could go on and on. Keep up the good work and I will be doing all my trailer business with etrailer. Just check out their website and see how much more they have to offer. 402697



- MCL-91AK
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


Received as ordered . 233742



- AL82AB
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


replaced trailer wireing with thicker wire, replaced 4 side marker lights led, replaced both tail lights led, all worked and look good. I just hope these led lights last a long time. the lights I took off all worked, but were not as bright as I wanted, they were the original lights that were on my pontoon boat trailer. 505178



- MCL-91AK
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


Good quality lights, just be sure to drill the hole for the power wire over size so that the power port on the back of the light doesn't ground out on the trailer frame. 544994



- AL91RB
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


Great, brand name products and some hard to find LED side marker lights. Refurbished an old EZ Loader boat trailer for carrying kayaks. Old incandescent lights were rotted off of the frame and the side marker lights in the fiberglass fenders were inside rubber grommets that were dry rotted. Etrailer had all the replacement lights, available in LED, and beat the price of any other option. Quality products. Delivered in 2 days under a free shipping promo. Etrailer is saved to my favorites for any trailer needs. Pic of the Yak project attached. New tail, fender and side marker LEDs! 408451



- AL82AB
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


So far so good. Replaced wesbar lights no longer available/desirable. These are direct swaps into the rubber grommets and are sealed on the back. Used watertight, heat shrink butt connections to existing trailer with g and back in business. Here's hoping they hold up under repeated dunking in water on boat launch and recovery. 370483



- AL91AB
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


Excellent replacement products for the bullet bass boat trailer. Upgraded all trailer lights to LED. 569047



- AL91RB
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


Working on 1982 tandem axle boat trailer replacing all lights to led. etrailer is the only one I found online that gave the dimensions of their lights & as a plus videos of them. Super store they are on top of everything makes all other competitors look stupid . Thanks for everything because of your attention to detail all the lights & light grommets were a direct fit saving me lots of time not having to retro fit anything. ANCHOR'S UP !!! 567766



- AL82AB
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


I have to say it's an absolute pleasure dealing with etrailer. Not only did my package arrive on time as promised but the experience of dealing with the people at etrailer such as Tommy and Dani made it that much more of fun experience. There was not a problem with answering my questions if they did not know the answer they found out the answer and got back in touch with me. Their prices are great their products are good quality and there's so many good things to say about the company that I could go on and on. Keep up the good work and I will be doing all my trailer business with etrailer. Just check out their website and see how much more they have to offer. 402694



- AL82AB
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


LED marker lights are the way to go. I would replace these every 3 or 4 years because the plastic just gets old and becomes hazy. I also replace the gasket as they get brittle and crack. Make sure you are getting the correct gasket for your lights. Call Etailer if you have any questions! 672778



- AL82AB
by:

Review from a similar Optronics Mini Thinline in Trailer Lights


Great sealed light for my boat trailer. 669353


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Info for this part was:

Expert Research:
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Updated by:
Adele M
Photos by:
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Updated by:
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Updated by:
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