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Thinline LED Mini Clearance and Side Marker Light - Submersible - 3 Diodes - Rectangle - Clear Lens

Thinline LED Mini Clearance and Side Marker Light - Submersible - 3 Diodes - Rectangle - Clear Lens

Our Price: $11.20
Trailer Lights
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Shipping Weight: 0.05 lbs
Thinline LED Mini Clearance and Side Marker Light - Submersible - 3 Diodes - Rectangle - Clear Lens Submersible Lights AL91CAB
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2-1/2" x 1-3/16". Waterproof, trailer light functions as both a clearance and side marker light when properly mounted. Requires a mounting bracket and plug (both sold separately) for installation. Clear lens with Amber LEDs. PC rated. Great Prices for the best trailer lights from Optronics. Thinline LED Mini Clearance and Side Marker Light - Submersible - 3 Diodes - Rectangle - Clear Lens part number AL91CAB can be ordered online at or call 1-800-496-5010 for expert service.
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  • Reviews (1384)
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  • Why etrailer?

Optronics Trailer Lights

  • Clearance Lights
  • Rectangle
  • LED Light
  • Amber
  • 2-1/2L x 1W Inch
  • Surface Mount
  • Rear Clearance
  • Side Marker
  • Submersible Lights
  • Optronics

2-1/2" x 1-3/16". Waterproof, trailer light functions as both a clearance and side marker light when properly mounted. Requires a mounting bracket and plug (both sold separately) for installation. Clear lens with Amber LEDs. PC rated.


  • Small, rectangular trailer light functions as both a clearance light and a side marker light 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 lens and housing
  • Clear lens over amber LEDs
  • Compatible with 12V DC systems
  • Multiple mounting options
    • Surface mount with open-back or self-grounding bracket (sold separately)
    • Recessed mount with grommet (A91GB - sold separately)
  • Accepts industry-standard 2-prong plug (A46PB or A86PB - sold separately)
    • Requires single-prong plug (sold separately) for installation with self-grounding bracket
  • DOT compliant
  • PC rated


  • Dimensions: 2-1/2" long x 1-3/16" wide x 7/8" deep
  • Diodes: 3
  • Power draw at 12.8 volts: 0.051 amps
  • Lifetime warranty on LEDs

dimensions of light

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.

AL91CAB Optronics Thinline LED Mini Trailer Clearance and Side Marker Light - Submersible - 3 Diodes - Rectangle - Clear Lens - Amber LEDs - PC Rated

Alternate part number: AL-91CAB

Item # AL91CAB

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Customer Satisfaction Score:

Customer Reviews

Thinline LED Mini Clearance and Side Marker Light - Submersible - 3 Diodes - Rectangle - Clear Lens - AL91CAB

Average Customer Rating:  4.9 out of 5 stars   (1384 Customer Reviews)

2-1/2" x 1-3/16". Waterproof, trailer light functions as both a clearance and side marker light when properly mounted. Requires a mounting bracket and plug (both sold separately) for installation. Clear lens with Amber LEDs. PC rated.


We put these on our bass boat trailer when the factory originals burnt out. These LED lights are bright and sharp looking. They will also take a tiny bit of pressure off the electrical system. Perfect lights.


Fast shipment. Used this as replacement for incandescent license plate light on my 2003 wells cargo trailer. I also ordered the same style light in red and amber led to replace my marker lights.

Nice upgrade all around. Much brighter than the led lights they replaced. Couldn't be happier....


Decided to replace my old boat trailer lights with LEDs. I couldn’t be happier. Made sure I bought everything I needed, self tapping stainless screws, base plates and extra wire leads which made it a very easy instal. They look and work perfect.


The light arrive but unfortunately the color is yellow and i was expecting a regular led white color for my license plate.I will call customer sercice for exchange for the right one.

Sorry that it was not as expected. The closest one we have to your size that is white, is this one here: Item # LPL91CB.
-- Etrailer Expert Sierra K - 09/09/2021


Good replacement lamp. Recently purchased a two place jet ski trailer with many issues. Replaced all wiring and installed new LED lamps all the way around. etrailer was the only source for the clear LED needed for the plate light. Only complaint is shipping and handling charges were nearly the amount of the lamp and shipping was well over a week. I had a customer waiting.


These side markers for trailers are sharp looking and, most of all, they are bright! With 3 LEDs in each unit, they provide excellent visibility. They are also sealed, so no chance of water contaminating or destroying the LEDs. They are also smaller in size so you can position them in more places. I'm rewiring my utility trailer with all new LED units. The previous lights using incandescent bulbs were just too dim and subject to corrosion. Once you wire a trailer using these LED units, you'll always use them!


I would like to give you a review it isn't on the specific parts though. It's generally about your company. I placed my order on a Sunday not expecting anything until Monday for processing which is typical. It was received and shipped that same Sunday. On that note there are times when something stands out and you say oh wow! This was one of those times! Kudos to you and your work ethics and customer service.


As others have said, these work very well as a LED upgrade. It took only a few minutes for me to replace 9 lights on my trailer, plug and play. Not sure why I didn't see amber lenses available when I ordered, but the clear lens looks good.


Remember this is just the light. Only the light. There is no pig tail or mounting frame. It must be designed to replace existing marker lights


Thank you for the fast service! I will be buying again from you!


Exactly what I was looking for - factory replacement for my LED trailer light...


The lights worked awesome on my boat trailer . at night time they are super bright for awesome visibility for others to see from a distance


Lights are on my boat trailer and are super bright.


Their service is unlike any other retailer on the net. Web site; videos of products; shipping; prices the whole nine yards. If it has to do with a trailer look no further place.


Great products. They were shipped and here in 2 days. Installed them yesterday and everything works fine. Will definitely keep etrailer on my preferred vendor list.


Exact factory replacement clearance light on my bass boat.


etrailer was very fast shipping. great product.


The LED lights are excellent for the interior of my H1 Hummer. They are extremely bright and don't get hot. Love them!


Great product every thing was as advert ised




the flush mount grommet took some minor mods to fit right but the light is nice and bright...thanks


exact fit for my old ones. easy install and work great.


Good quality, rapid delivery, and outstanding customer service..


Exact fit for my boat trailer.


Great services

Show More Reviews

See what our Experts say about this Optronics Trailer Lights

  • Replacing Wesbar # 7292 Trailer Clearance/ Marker Lamp
    According to my Wesbar representative, the 7292 light is no longer available, although I did find some with red lenses online by doing a Google search. I looked though our selection of amber clearance/marker lights, and was unable to find anything with a matching bolt hole pattern. Unless you can find one online, you'll probably find your best bet will be to replace the lamps. I've linked to our selection of amber marker/clearance lamps. I'd recommend going with LED lamps if possible. They'll...
    view full answer...
  • Red Optronics Clearance Light Needed and Matching Chrome Mounting Bracket
    The Red version of the Sealed, Mini Rectangular LED Trailer Clearance, Side Marker Light # AL91CAB from Optronics is found as part # AL91RB on our site. The Chrome mounting bracket for both lights is part # A91CB and works with 90 Series or 91 Series Optronics lights.
    view full answer...
  • Optronics Amber Clearance LED Clearance Light Recommendation
    If you are looking for a replacement clearance light for your trailer you are going to want to use an amber bulb like the Optronics Trailer Lights # AL91CAB. A white bulb would not be a good choice as a a clearance light, since in most cases it is required by law that you use an amber or red lens. I attached a review video for this product for you to check out also. You may also be interested in a Black Mounting Bracket # A91BB and an Optronics Wire Plug for the AL91 Clearance Lights...
    view full answer...
  • Recommended Amber, Red, And Clear Lens LED Clearance Lights For Karavan Boat Trailer
    The clearance lights we offer are not exactly the size you mentioned but these may work well for your trailer. I recommend part # AL82AB for the amber lights. These are LED lights and are submersible. These measure 2-1/2 inches long and 1-3/16 inches wide and 7/8 inch deep. For a red clearance light I recommend part # AL91RB. The clearance lights with a clear lens has amber colored diodes. We do not have a clear I recommend part # AL91CAB. All three of these lights have the same measurement...
    view full answer...
  • Clearance and Side Marker Light With Clear Lens and Red LEDs
    We do carry a number of options for clearance lights that have a clear lens and red LEDs, but the red equivalent of the Thinline LED Mini Clearance and Side Marker Light - Clear Lens - Amber # AL91CAB has a red lens as opposed to a clear lens; it is the Thinline LED Clearance and Side Marker Light # AL91RB. If you want to go this route you can mount it with Grommet # A91GB (recessed mount) or Mounting Bracket # A91BOB (surface mount) with Right Angle 2-Wire Pigtail # A46PB. For similar...
    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...
  • LED License Plate Light for a 2007 Triton Elite 101x20 Trailer
    We only have 3 clear lens, white light LED lights for license plates. First is # LPL31CB. I have included a link to a video review of it for you. We also have # LPL41CB which will be brighter because it has 5 diodes. And then there is LED light with bracket, # LPL55CB.
    view full answer...
  • Recommended While LED Lights with Clear Lens for Courtesy Lamps
    We do not carry and clear lens with white LED in that # AL91CAB size. You may want to consider instead using the Optronics Sealed LED Utility Light - 2 Diodes - Clear # UCL13CPG or the Thinline Sealed LED Utility Light - Clear - 6 Diode # UCL65CB as an alternative. Another option is the Sealed Waterproof LED Utility Light # UCL19CB for a polished housing.
    view full answer...
  • Can Optronics LED Trailer Clearance Light # AL91CAB Be Used With Both 12V and 24V Systems
    We do offer a similar product from Optronics that is intended for 24V systems, part # MCL66A24B. This is a 6-diode amber lens trailer side marker/clearance light in a sealed rectangular housing that measures 4 inches long x 27/32-inches wide x 1-3/16 inches deep. It mounts with two screws (not included) on industry-standard 3-inch centers and has pigtail leads, a white ground wire with ring terminal and a black 24V power input wire. This 24-volt LED light will work with 12-volt systems,...
    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...
  • Replacement Clear Lens and White Lights for Running Boards on a 2008 GMC Sierra
    Surface mount LED utility light # UCL19CB might be a good option for you. It is a surface mount light so it will attach directly to the mounting surface and no additional bracket is needed. This LED light is sealed and waterproof as well. Another option is # UCL65CB. You would need mounting bracket # A65PB for black or # A67CB for chrome. I have linked a video review of this light for you.
    view full answer...
  • Clear Submersible Marker Light to Replace Light on Boat Trailer Used as Reverse Light
    A license plate light such as # LPL91CB could work for you. It is 2-1/2" x 1-1/4". For something a little larger you could use # UCL65CB with mounting bracket # A65PB. The light is 4" long x 1-1/4" wide x 1" deep. We do have actual reverse lights, such as # BUL10CB, which is submersible. You would need to use pigtail # A47PB and a mounting bracket, # BK70BB, with grommet # A70GB for installation though.
    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...

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