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LED Identification Light Bar for Trailers over 80" Wide - Submersible - 9 Diodes - Red Lens

LED Identification Light Bar for Trailers over 80" Wide - Submersible - 9 Diodes - Red Lens

Item # MCL84RB
Our Price: $26.89
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Shipping Weight: 0.56 lbs
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16-1/2" Long x 1-3/8" tall. Waterproof identification light bar with 3 lights is designed for trailers wider than 80" Durable stainless steel base. Surface mount to trailer - hardware not included. 2-Wire design with 50" leads. Great Prices for the best trailer lights from Optronics. LED Identification Light Bar for Trailers over 80" Wide - Submersible - 9 Diodes - Red Lens part number MCL84RB can be ordered online at or call 1-636-306-4830 for expert service.
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  • Reviews (128)
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  • Why etrailer?

Optronics Trailer Lights - MCL84RB

  • Clearance Lights
  • ID Bar
  • LED Light
  • Red
  • 17L x 1-1/2W Inch
  • Surface Mount
  • Rear Clearance
  • Submersible Lights
  • Optronics

16-1/2" Long x 1-3/8" tall. Waterproof identification light bar with 3 lights is designed for trailers wider than 80" Durable stainless steel base. Surface mount to trailer - hardware not included. 2-Wire design with 50" leads.


  • LED trailer light functions as an identification bar for trailers wider than 80"
    • 3 Optronics AL91 series lights are replaceable (AL91RB - sold separately)
  • 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 stainless-steel base
  • Red lens over white LEDs
  • Surface mounts on trailer - hardware not included
  • 2-Wire design includes power lead and ground wire
  • DOT compliant


  • Dimensions: 16-1/2" long x 1-3/8" wide x 1-5/8" thick
  • Distance between mounting holes (center on center): 16-1/16"
  • Diodes: 9
    • 3 per light
  • Power draw at 12.8V: 0.153 amps
  • Wire length: 50"
  • Lifetime warranty on LEDs

Manufacturer Cross Reference
Light will work as an exact replacement for:
Truck Lite # 15050R

Optronics MCL84 Series LED Identification Light Bar 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.

MCL84RB Optronics LED Identification Light Bar for Trailers over 80" Wide - Submersible - 9 Diodes - White Base - Red Lens

Alternate part number: MCL-84RB

California residents: click here

Customer Satisfaction Score:

Customer Reviews

LED Identification Light Bar for Trailers over 80" Wide - Submersible - 9 Diodes - Red Lens - MCL84RB

Average Customer Rating:  4.7 out of 5 stars   (128 Customer Reviews)

16-1/2" Long x 1-3/8" tall. Waterproof identification light bar with 3 lights is designed for trailers wider than 80" Durable stainless steel base. Surface mount to trailer - hardware not included. 2-Wire design with 50" leads.


This is a great light to replace the broken one on my 2004 Ranger boat trailer. It’s been on several months and continues to work fine. It’s much brighter than the original equipment light. I would buy again if I needed another one.


The OEM led light bar plastic housing cracked in half, either vibration or road damage. The stamped stainless sheet frame on this is likely able to hold up better. Otherwise it is a match and installed easily.


Great light bar at a good price.


Very good quality and bright lights.

Trailer has been backed into the Spokane river 30 to 40 times. Still works as new. Good product.
Richard - 08/04/2022


These lights are amazing! They are the brightest LED lights I have found. They are bright in the day time and super bright at night! Easy installment with the videos they have available on their website. I will be shopping with from now on. Best prices around.


My trailer doesn't require one of these, but I added it anyway. I like the extra visibility it provides for drivers behind me. Easy to install. It sbeen a year, no issues.


Still looks great, and more importantly, it has made it through a complete New England season cycle without ONE LED failing! Thing sat buried in snow for weeks, parked with the tail facing North where it gets no sun at all! Stays wet most of the time over there. Through all the heat, humidity, and torrential downpours of New England summers, they still live on. Nice, bright LEDs too.

2 years since the installation, still working great! Glad I bought these.
Smitty S - 11/18/2017


Purchased this as replacement for original plastic light bar on my horse trailer. Looks way better, definitely way sturdier and easy install. Another benefit of this stainless steel light bar is that the metal tabs at each end where you screw it to the vehicle have a tiny amount of give so that if the holes don’t line up absolutely perfectly, it may still work. You can’t be off by much (small fraction of an inch as I recall) but with plastic it has to line up EXACTLY or it won’t work. etrailer has a great selection. Would purchase again.


Great product! One of the few LED ID light bars that I could find that is a direct replacement for my old, broken one, 16” (16 1/4”?) long from center to center of the mounting holes. Easily wired to my boat trailer and I mounted it with stainless steel rivets. Also, was about $10 less expensive than on that other online site, and fast shipping. Very satisfied!


Look great on the trailer Bright ligh ts!!


These are my favorite lights for a long time. I bought the LED lights to replace my old ones that were incandescent bulbs. They are installed under the rear of my Sierra's tail gate.


High quality product. really good servi ce.

Great lights, bright and strong. Scheduled to travel to Alaska and back this Summer.
Timothy - 05/14/2022


quality product


Needed submersible lights since the old ones I was replacing got messed up from being soaked in water all the time from where they were on the trailer and the rain collected on them. Perfect replacement.


Nice product for the price. The frame is relatively light weight but does the trick and looks nice. The lights look good and are bright! Overall, good value


Didn’t expect this quality for what I paid....very nice light bar....leds light up the back end very well...would buy again from etrailer....their service is the best




I self installed all of these LED trailer lights on my boat trailer. They look awesome and work great even through multiple launches in the lake under water. I would recommend this lights and the prompt service from etrailer

I continue to be impressed with this trailer LED. They work all the time and continue to perform while underwater at the boat ramp while launching my boat. Highly recommend.
Paul M - 06/10/2020


Quick response, awesome service and fast delivery . Did complete restoration on my utility trailer and these are by far the best led lights for the job . Very happy with the end results. Would recommend this to any dyi person.

I’ve got no complaints, If I restore another trailer this is the place to purchase all my led lights ! They work great !
Dan P - 08/21/2018
I’ve got no complaints, If I restore another trailer this is the place to purchase all my led lights ! They work great !
Dan P - 08/21/2018


As always, the service was excellent and the light bars work as they should. After a year, still plugging along. Couldn't ask for anything more.


As advertised


I changed out my original Wesbar incandescent trailer running lights to LED. The thin line series snapped right into the original base. Looks great and they are water proof.


Replaced my plastic frame OEM light because one of the mounting tabs cracked off. This new metal one is durable, LEDs are bright, hole spacing matched the old one, and it looks great.

Thank you for the follow up. I am still satisfied with the light bar and it seems to be holding up with no issues after the first year of use.
Jon - 11/08/2018


I installed this on my trailer immediately upon arrival and took my boat to the lake for the day and when I came home I inspected all my lights and "one" of them has moisture inside of the housing just within one day of lunching the boat. My side marker lights are sealed with epoxy and made in the USA "which I purchased at my local trailer store" and they are perfectly dry inside the housing. Not sure how these are made but they seem like there is no quality control on these led light housings.


I've ordered from etrailer several times during 2016, and have never been disappointed with the products, service, or shopping experience. Any time I need anything for either of my trailers, I go straight to

Show More Reviews

See what our Experts say about this Optronics Trailer Lights

  • Is Optronics Sealed 3-Light Truck Trailer Identification LED Light Bar # MCL84RB Offered in Amber
    According to my technical contact at Optronics their Sealed 3-Light Truck Trailer Identification LED Light Bar # MCL84RB is not offered in an amber version. For reference I have linked you to our main page for all LED-type amber clearance lights.
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  • Looking for LED 3-Light Trailer Light for a Wide Trailer
    The center mount 3-light trailer lights that you are looking for are classified as clearance lights. If you were looking under tail lights, that may explain why you could not find them right away. I have attached a link to all of the LED 3-light trailer lights we offer for you to check out.
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  • Is the Trailer Identification LED Light Bar # MCL84RB Submersible
    The Sealed, 3-Light Truck, Trailer Identification LED Light Bar # MCL84RB that you referenced is submersible, but we still recommend you unplug your trailer lights when backing your trailer down the boat ramp so as to prevent any shorts due to the trailer's wiring.
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  • Can a LED Identification Light Replace a Non-LED Light on a Trailer
    If you wanted to replace the broken identification bar on your trailer with an LED version like the part # MCL84RB you certainly could. An LED setup will last longer, be brighter and will draw less amperage so it would be a great option.
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  • Replacement ID Bar Light Recommendation for Horse Trailer
    You can hit reply to this email with the picture and I'll take a look.
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  • LED Marker/ Clearnace Lights for Cargo Trailer
    The Optronics LED Trailer Clearance and Side Marker Light, part # MCL67RB is similar in dimension to the Bargman 99 series. The light features mounting holes that measure 3 inches apart, center-to-center, and has a power wire lead. The lamp grounds through its connection to the trailer frame. This lamp would be a great choice for side marker/ clearance lights for your enclosed trailer. Optronics also offers a light bar, part # MCL84RB which could be used for a light bar for the rear of...
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  • Comparing Optronics Trailer Lights MCL-83 and MCL-93
    The MCL-83 measures 17 inches long overall and 1-1/2 inches deep. It draws 0.141 amps at 12.8 volts. Light MCL-93, # MCL93RB, is 16-1/2 inches long overall and 1-5/8 inches deep. It draws 0.051 amps at 12.8 volts. Both are LED lights just with different measurements and power draw ratings.
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  • LED Light Kit for Trailer Over 80 Inches Wide
    The "80" you are referring to is the width of the trailer, and it makes it easier to determine the light kit you need. Since you need tail lights as well as running lights, I recommend the Aero Pro LED Trailer Light Kit for Trailers Over 80" Wide # TLL36RK. This will give you the Stop, turn, tail, side marker, rear clearance, side reflector, rear reflector, and license plate light that you need for your trailer. For the light strip with three lights you were referring to you will need...
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  • Recommended U-Bolts, Rollers and Boat Trailer Lighting/Wiring for a 1984 Shoreline Trailer
    Thanks for sending us the pictures! Since you are installing a Bolster-and-swivel-bracket assembly part # CE10001G-4 and need a 4-1/8 inch width by 3-1/2 or 4-inch length U-bolt, we currently don't offer a close match. I would recommend going to a local hardware store to locate a U-bolt with the dimensions you need. I would go with a stainless steel u-bolt because it is corrosion resistant and ideal for marine applications. For the lighting and wiring on your 1984 Shoreline boat trailer,...
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  • LED Trailer Light Recommendations for a Trailer Over 80 Inches in Width
    I attached a help article that details all of the various taillight requirements for trailers based on their dimensions. A good kit to start with would be the part # TLL36RK, for an ID bar part # MCL84RB and then for red ID lights for the rear part of the side of the trailer part # MCL-91AK.
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  • Recommended Trailer Light Kit for a Boat Trailer
    Sounds like you are describing the Submersible, Over 80" Aero Pro LED Trailer Light Kit w 25' Wiring Harness # TLL36RK. This is a great kit from a great company. Optronics electrical products, including this kit, have typically received great customer reviews! The only thing that I would change when installing this kit is the quick-splice connectors. Since this will be on a boat trailer that is submerged under water the Deka Heat Shrink Butt Connector # DW05744-10 will hold up much better...
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  • Recommended LED Marker Lights for Trailer Over 80 Inches Wide
    The Trailer Clearance or Side Marker Light w/ Reflex Reflector - LED - 3 Diodes - Red Lens - Black Base # MCL32RBB will have the room to hide wires. The amber lens # MC32ABB is an incandescent bulb. I believe you will want the Oval LED Trailer Clearance, Side Marker Light with Reflector, 6 Diode - Amber # MCL31AB along with the Oval LED Trailer Clearance, Side Marker Light with Reflector, 6 Diode - Red # MCL31RB. For the light bar, I recommend the Sealed, 3-Light Truck, Trailer Identification...
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  • Recommendation For LED Boat Trailer Light Kit For Submersible Applications
    Sounds like you need something like the Submersible Over 80" Aero Pro LED Trailer Light Kit w 25' Wiring Harness, Item # TLL36RK. The lights in this kit are sealed and have a waterproof construction. The LEDs are very efficient and last 50 times longer than incandescent bulbs. This kit is for trailers that are over 80 inches so if your trailer is under 80 inches then you can use a similar kit, Item # TLL9RK. Since you want something waterproof that will hold up in salt water, I recommend...
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  • Looking for Sealed 3-Light Truck Trailer Identification LED Light Bar in Amber
    I spoke to my contact at Optronics and the Sealed 3-Light Truck Trailer Identification LED Light Bar, # MCL84RB, is not offered in amber. However, we do have a couple of light bars that may work for you. We offer the Sealed Amber 3-Light Truck and Trailer Identification Light Bar # MC93AB with black base and # MC99AB with white base. I have included a couple of short videos for you.
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  • Lighting and Conspicuity Tape Recommendation for a 36 Foot Long Trailer
    I attached a help article on trailer lighting requirements based on size of the trailer. Based on your dimensions you would want the # TLL36RK to start and then would also need a # MCL84RB and a couple more clearance lights like part # MCL95AB. You will also need conspicuity tape as well like part # RTR150711PB. See the mentioned help article for placement of the lights and tape.
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