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Aero Pro LED Trailer Light Kit for Trailers Over 80" Wide - Submersible - Driver and Passenger

Aero Pro LED Trailer Light Kit for Trailers Over 80" Wide - Submersible - Driver and Passenger

Item # TLL36RK
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Waterproof trailer light kit includes 2 combination tail lights and 2 clearance or side marker lights to serve 8 functions on trailers wider than 80". Universal mount with stainless steel hardware. 25' Harness with 4-pole connection. Lowest Prices for the best trailer lights from Optronics. Aero Pro LED Trailer Light Kit for Trailers Over 80" Wide - Submersible - Driver and Passenger part number TLL36RK can be ordered online at or call 1-800-940-8924 for expert service.
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Optronics Trailer Lights - TLL36RK

  • Tail Lights
  • Rectangle
  • Kit
  • LED Light
  • Red and Amber
  • 8L x 3W Inch
  • Surface Mount
  • Stop/Turn/Tail
  • Side Marker
  • Rear Clearance
  • Side Reflector
  • Rear Reflector
  • License Plate
  • Submersible Lights
  • Optronics

Waterproof trailer light kit includes 2 combination tail lights and 2 clearance or side marker lights to serve 8 functions on trailers wider than 80". Universal mount with stainless steel hardware. 25' Harness with 4-pole connection.


  • Combination trailer light kit serves 8 functions when properly mounted on trailers over 80" wide
    • Stop, turn, tail, side marker, rear clearance, side reflector, rear reflector, and license plate light
    • Great for marine trailer applications
  • 2 Aero Pro Combination LED tail lights (STL36RB and STL37RB)
    • Driver's-side light includes license illuminator
  • 2 Sidemarker and clearance lights (MCL91AK)
    • Single wire design grounds through mounting hardware
    • Plastic base with chrome finish
    • Gaskets for weathertight seal
  • Sealed, waterproof construction is submersible
  • LEDs makegreat replacement for incandescent lights
    • Last 50 times longer
    • More efficient - provide better light with less power output
    • No bulbs to replace - no brittle filaments
  • Durable polycarbonate housing and acrylic lens
  • Corrosion-resistant license plate bracket
  • Universal mount
    • Stainless steel mounting hardware
  • 25' Wiring harness with 4-pole connector
  • P2 rated clearance/marker lights
  • DOT approved


  • Application: trailers over 80" wide
  • Dimensions of combination tail lights (STL36RB and STL37RB): 7-7/8" long x 3-1/4" wide x 2-7/8" deep
  • Dimensions of clearance and side marker lights (MCL91AK): 2-1/2" long x 1-1/4" wide x 7/8" deep
    • Dimensions with bracket: 2-7/8" long x 1-1/2" wide x 1-1/4" deep
  • Diodes:
    • Driver side tail light: 23
    • Passenger side tail light: 17
    • Side marker and clearance light: 3 per light
  • Lifetime warranty on LEDs

Optronics TLL36RK Aero Pro LED Trailer Light Kit for Trailers Over 80 Inch Wide Diagram

Note: Over 80" Federal Regulations require additional clearance lights (like MCL93RB or MCL84RB - sold separately). Also, if using with a tilting trailer you may need to route a separate ground wire from the clearance lights to a metal part of the trailer frame since tilting trailers sometimes use rubber isolators in the tilting mechanism.

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 circuit board is sealed, which means that water will not damage the diodes or circuit board.

Combination Lights for Trailers Over 80" Wide

Flatbed trailer over 80" wide with combination tail lights

If a trailer is 80" or wider at its widest point, then it requires rear clearance lights in addition to basic trailer lights. These clearance lights indicate the width of the trailer when it is viewed from the back.

To meet these requirements on a flatbed utility trailer where the bed extends past the wheels, you can install combination trailer lights that include the rear clearance function. For proper mounting, the lights must be installed at the widest points on the rear of the trailer - one on each corner.

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.

TLL36RK Optronics Aero Pro LED Combination Tail Light Kit for Marine Trailers over 80" Wide - Submersible - Red Lens - Driver and Passenger Side - 25 Ft Harness

Alternate part number: TLL-36RK

California residents: click here

Customer Reviews

Aero Pro LED Trailer Light Kit for Trailers Over 80" Wide - Submersible - Driver and Passenger - TLL36RK

Average Customer Rating:  4.7 out of 5 stars   (265 Customer Reviews)

Waterproof trailer light kit includes 2 combination tail lights and 2 clearance or side marker lights to serve 8 functions on trailers wider than 80". Universal mount with stainless steel hardware. 25' Harness with 4-pole connection.


I purchased these lights to replace and upgrade the incandescent set that came on a 20’ boat trailer. I chose this set because I liked the way the taillight side markers protrude out rather than being flat. I felt that this would help with visibility at night. The only thing I’m not particularly fond of is the way the amber marker lights that came with the set are designed. The light itself I like. It uses a plug in wire design rather than a sealed wire that is already attached like the taillights. It’s more or less a matter of preference. I mounted these on the fenders facing forward to help see where the trailer is in dark and rainy weather.

I’m still happy with the product and would recommend it to future buyers.
Charlie - 07/03/2019


Works well and overall nice kit, I just can't wrap my brain around the fact some of the wiring stays exposed on a trailer light kit designed as submersible. Just a matter of short time before it corrodes especially if submersed in saltwater/brackish water.

You can cap off any unused wires. Also, using heat shrink butt connectors like item # DW05745-10
Deka Heat Shrink Butt Connector - 12-10 Gauge - Nylon Insulation - Yellow - Qty 10
, is a good way to keep water out of your connections.
-- Etrailer Expert Sierra K - 07/12/2022


Quality Product, Easy Mount, Larger than normal, but they are replacing my Vehicle's Brake & Running lights. When the Bikes are mounted on the rack, they cover the Vehicle's lights. The first photo without the Bike was taken after the lights were mounted.The second photo with the Bike on the rack was photoshoped, as part of the planning process to mount the lights.

Lights are working great, excellent product
Albert - 05/09/2020


This has been a great upgrade to my boat trailer. After I upgraded my truck lights to LEDs I needed a good set of compatible lights for my trailer. These were it! Very easy to install, came with new, complete, color coded wiring harness. Got it done in about an hour.
Thanks! Great product!


After installing a wiring harness on my Honda Fit (which was fairly tricky!) I enlisted the help of my father and uncle to help me install this on a small ancient boat trailer for a newly built sailing dinghy. Installation was a breeze but we did have a hell of a time creating a good grounding contact with the trailer. On a newer trailer, this likely would have been easier. I would also recommend just wiring a full ground from the wiring harness at the car end and not messing with a metal-on-metal contact. I trailer and launch my boat in salt and fresh water and maintaining that ground connection throughout a season of regular use has proved challenging! The lights never come on at first but then bounce on after I go over a few bumps and stay on. The lighting kit has been great and I've had no problems whatsoever, just the standard issues of keeping the rust off the ground contacts and keeping the wiring in good shape as it's mounted on the outside of (round!) trailer supports. etc. The lights are bright and look nice and haven't filled with water or had any problems. You may need to invest in some larger/sturdier zip ties if you end up needing to run this on the outside of your trailer versus threading it through the frame.


Looking to be noticed at night? Well these are the lights! I mounted these to a PWC trailer, boy did it make a difference! Everything is provided with this kit if you are starting from scratch, or just replacing existing similar lights. Very pleased with how bright these lights are.


I recently decided to replace my existing lights with LED's on an enclosed 5 x10 ATV/Motorcycle trailer. This kit worked great for the job. Install was simple for the most part, but may require some small modifications based on existing wire and lighting locations. Lights are very bright and make trailering a breeze. The only reason I gave it 4 stars was that it was short several pieces of the install hardware and I chose to improvise rather than contact Etrailer customer service and wait for replacements. Certainly recommend and will be a returning customer.


Order was processed and shipped quickly. Arrived as scheduled. Installed easily and functioned as expected. Installation instructions were poor, but I'm an electrician so that was no issue. I recommend this product and etrailer as a supplier.


These fit my 1998 Ranger r91 sport boat trailer perfectly and a re a great upgrade. The screws needed to be pushed all the way to the very top of the channels and the lights look like they are a factory fit.
Easy to install and a great product!


There seems to be some confusion (myself included) about the spacing of the mounting channels on the rear of the tail lights.

So gather round and learn from my mistakes:

ALL of the spacing between channels is 2". The difference is the distances from the channel to the side of the lamp assembly!

Note the attached picture. The bottom lamp is for an over 80" trailer and the top is the one I mistakenly purchased. NOTE THE DIFFERENCES FROM THE SCREWS TO THE EDGES OF THE LAMP. BIG DIFFERENCE! Also note that the over 80 lamp (bottom) is shaped differently on the right side, while the top under 80 lamp has straight sides.

Happy trailering!



Nice lights, they work well on my flatbed trailer


Great quality. Bought these for my duck boat trailer. Lights and wiring were shot. Just an FYI, at least with the wiring harness I bought there was no ground wire. All of these led lights needed to be grounded to the trailer. Not a huge deal, just different from other trailers I have rewired.


After a year the LED trailer light is as bright as the day that I installed it.
Good service and good price. I would use this product again!


Product arrived as ordered and on time.

Once installed, everything works and looks great.

1) Installation istructions included with the kit were a bit limited at times, especially if you had never done this sort of thing before (like me). For example the instructions to install the base-snap-on post-style amber marker lights were OK but not explicit in terms of pointing out that it's important to orient the light the right way before snapping it in place. Again, a reasonably bright person can figure it out, but a bit more guidance would have been helpful.
2) Kit does not include the three rear clearance LEDs to replace the ones on my trailer. It is clear that these are not in the kit and I'm not dinging for this. Just know that if you want to replace these, you are on your own to find them. For me it was a bit of a challenge since I wanted LED versions that fit where the old ones went without drilling new holes. I needed ones with mounting 'ears' with holes 2 3/4 inches on center. I found what I needed at a local retailer. To the credit of, this website is great in that specs like mounting hole spacing is usually right there for you. In searching online for the clearance lights I wanted many sites don't put that sort of info up for you. Bravo to etrailers!

Don't let the 'cons' I listed dissuade you. This seems to be a good product (I haven't put the trailer in the water yet...), installation was pretty easy, and has good online info to help in most cases.

These trailer lights are awesome! They work and look great and seem to be well sealed. After many trips to the lake they still look brand new with no sign of water entry. LED is the way to go.
Steve W - 06/04/2014


The instruction sheet on how to install is weak. A few diagrams or pictures would be worth a thousand words.


Well made product overall. I would have a few suggestions for the manufacture though. First the screws that came with it were not self tappers as described in the instructions. Luckily this was replacing old busted lights and no new holes needed to be drilled. Second the connections for the main wires to the wires on lights them selves should not be done with wire nuts. Luckily I had some heat shrink connectors . I launch my boat primarily is salt and brackish water and know hot gas saltwater can eat through most metals. Plus no submersible trailer should have connections with wire nuts. Third both sides should have clear back up lights on bottom of lights not just driver side I don't know about most people but I do use both mirrors backing up and most every one of my back downs take place well before daylight since this was for my duck hunting boat.

Well, that light is for the license plate, NOT for back up lighting. Thought Id clarify that.
-- comment by: Ashley J - 11/09/2015


I feel these were expensive for what they are. They are delicate. One arrived damaged (etrailer sent out a replacement) and they feel cheaply made. They come with the "knife splice" connectors which are garbage once they get wet. The yellow running lights need an extra hole drilled to make room for the wire BUT the hole has to be in the right spot because the wire has a stiff end that goes through the hole. My hole was about 1/16" and the wire touched the frame shorting it out and I did not realize at first.
It does come with SS bolts for the lights and plenty of wiring.
For less money I found stronger lights online after I ordered these.


The stop/turn rear lights seem to be great quality and sealed well. The marker lamps itself is a sealed unit, but separate from its chrome mounting plate, so I guess thats OK. I'll be using some black silicone to install the lights; after I pilot drill the screw holes I'll put a healthy amount of silicone on the back of the unit. This will get a little goo in the threads to help seal them and fill any voids between the housing and trailer frame it sits against to prevent a little pool of water from being stuck in there. The stainless hardware to mount the main lights is good, but the rest of the stews suck. I'm going to pick up some better stainless screws that are longer, my trailer frame is thick. The plastic wire connectors are crap, throw them out (the little blue ones that pierce the wire for the marker lights). How is that water proof? Get some heat shrink butt connectors and adhesive lined heat shrink tube is this is for a boat trailer installation like mine.


These lights work very well. They are bright and easy to install. I would purchase them again.


Great kit! Adapted to an older PWC trailer no problem. Very bright, and sharp! Kit includes everything needed for a install from scratch.


Being a new boat owner I was quickly overwhelmed by what I didn't know. Re-wiring, re-lighting my trailer was my first project. etrailer has a wide range of products, but most important to me, was their added product information and instructional information which helped me make the right selections to get this done. Add to that is their very competitive prices. etrailer will be my go to source for my future trailer needs.


Tremendous product at a great price. This lights arrived before promised, well packaged, with all parts and undamaged. Installation was relatively easy; I routed the wire through the boat trailer frame instead of on the frame as described in the instructions. There was enough wire included for my 17.5' boat trailer. The lights are bright, well sealed and sturdy. They were dunked many times during last summer fishing season I had no problems. Highly recommend. I will be putting the same set on a utility trailer.

Still working perfectly. The lenses show no oxidation, wiring and connectors all holding up well. Still very happy with my purchase.
Craig S - 04/04/2018


These lights were used to rewire a 2001 Ranger Cherokee Boat Trailer. I am happy with the overall light output of these LEDs. The rear lights are well constructed (nothing loose when shaken and was sealed). They fit pefectly into the area where the old lights were mounted. My biggest complaint was that I didn't realize that the side light covers needed to be seated onto the mount for the light to operate and I wasted several hours trying to troubleshoot the wiring. Thumbs down for me, Thumbs up for the wiring kit.


These lights worked perfectly and are quite bright. I had spent days trying to figure out why my turn signals would not work with my previous incandescent lights(on a new utility trailer. I even tried three different new incandescent trailer light sets and two new converters) when a tech at suggested I try an LED trailer light set. This set worked as soon as I hooked them up. Wish I had been smart enough to buy these LEDs in the first place. Would have saved me a great amount of frustration and expense. My guess is that my car's electrical system and/or the converter could not handle the extra current of the incandescent light sets.

Probably needed a heavy duty flasher to get the turn signals to work on the incandescent lighting or a trailer wiring kit for your application of vehicle. Installed a harness kit on a 2013 Chrysler Town and Country van that had a circuit built into the wiring kit.
-- comment by: Clarence - 08/14/2014


was everything i had hoped for

more bulb replacements. didnt even need the resistors for my 2016 truck..yay

Show More Reviews

See what our Experts say about this Optronics Trailer Lights

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    Sounds like you have a solid plan in place for your wiring on your trailer. I am sure you have already received it but I am attaching a link to our helpful article that explains trailer wiring you can check out. Any time you can avoid splicing into the wiring you reduce the possibility of corrosion or loose wires. You will want to make sure you have each light properly grounded to a clean, bare metal surface. If you use the connectors and terminals as you described, I am certain you will...
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  • Trailer Light Kit Recommendation for Pontoon Boat
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    Yes, you can hook up your new trailer's tail lights because there is no universal color code for wiring, as helpful as that might be. I was unable to find your order number to determine which trailer lights you purchased from us so I could help you with the functions of the wires on those lights, but what you need to do to determine the functions of your trailer wiring is test the wires by function using a charged 12 volt battery and a jumper cable, applying 12 volts to each wire which...
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    Yes, all of the wires included with the Optronics Aero Pro LED Trailer Light Kit # TLL36RK are copper wiring. I verified this with my contact at Optronics. This along with the sealed, waterproof construction of the lights themselves will provide you with a durable a long-lasting setup that's resistant to the type of corrosion issues you had in the past. I have attached a short video review that you can check out as well.
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    This sounds like a ground issue or a possible short. Ground problems normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or brake light. A short could come from a dirty or corroded trailer connector. Make sure that the vehicle side and trailer side connectors are clean and free of corrosion inside and out. The main connector grounds should be attached to clean and corrosion free bare metal surfaces. The...
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  • How to Mount Submersible, Over 80" Aero Pro LED Trailer Light Kit w 25' Wiring Harness TLL36RK
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  • LED Trailer Tail Lights Do Not Work When Vehicle Headlights Are Turned On
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  • What Are Dimensions of Mounting Slots on Optronics Trailer Light # TLL36RK
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  • Is Water Supposed to be Able to Get in and Drain Out of the LED Trailer Light Kit, # TLL36RK
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  • Adding 2 Wire LED Clearance Lights to a Boat Trailer
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