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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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Optronics Tail Lights - 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 etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (233)
  • Q & A (143)
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  • Why etrailer?

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   (233 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.


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


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 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


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.


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.


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! Keith


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.


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.


Good lighting, easy to install. I installed them differenctly than most, because I did not want to drag them off the back of the trailer. Placed them high and then the license plate under the light. Worked out great.


Received Aero Pro LED submersible light kit. Easy install on Hobie Cat trailer (one day). Etrailer did a great job in correcting first shipment which USPS lost, corrected the problem and resent package which came in a few days.


Excellent product easy to install. Shipped quickly too.


Good kit, would be better if they included machine screws as an option for mounting the marker lights, sheet metal screws don't work well if you are mounting on 3/16" steel.

Great lights with no issues, I have Optronics on another trailer as well and the license plate LEDs went out. I cantacted Optronics and they immediately sent me a replacement light after I sent them a picture of the light so that they could confirm the light model. Excellent way to stand behind their product.
Coloradodonkey - 08/31/2020


Great product, good quality, easy to install. Highly recommend.


Product arrived as ordered and on time. Pros: 1) Once installed, everything works and looks great. Cons: 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 etrailer.com 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 etrailers.com, 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 etrailers.com 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


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


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


Not very happy with these lights. Immediately after installation - first splash with the trailer - they flooded. I contacted etrailer but never heard back. While they continue to function, the flood every time. This was an expensive kit for not being led. The license holder is long-I had to modify it so that it did not drag on the ground. Overall clunky and cheap.

The lights in this kit are LED, but the taillights are not a sealed housing design. The lights are sealed inside the housing so that they are waterproof, but the housings are not completely sealed. There is a drain hole on the bottom of the light to allow any water that gets in to drain out. With the housings not being sealed, it does allow you to replace the light lenses if one gets damaged.
-- Etrailer Expert Victoria B - 07/30/2020


Even though the parts were on back order, the sakes team always kept me updated on the order status


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 etrailer.com 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


Fantastic product! RANGER BOAT did not have a viable LED retrofit for my particular year trailer, nor did they have a suggestion. I measured my boat , and ordered these. I had to drill new holes, but was VERY easy to install these, and they look GREAT! No more burning out bulbs for this guy. I am a electrician, so the re-splicing of the wires wasn't an issue at all. I think that even if I was not, the directions are very easy to follow. I would recommend that you get some "HEAT SHRINK TUBE " to put over your connections.

Still working perfectly.
John D - 03/23/2018


Easy order, good communication, on-time delivery, & product as expected.


Hi. I’m satisfied with the trailer tires but I wasted a lot of time and trouble getting the bead seated because they were so narrow, I guess due the packing and storage process. I went from referral to referral hearing the same line, “maybe they can do it”. On my fifth service shop, a place that sells and services tractor trailer semi tire, they were finally able to do it. On top of that, I had to pay a little over $20 per tire to get them beaded. I could have bought the tires already mounted on new wheels from you for the price I paid for the tires and mounting. I meant to mention this to you last year, maybe you should mention this potential problem so that other customers might avoid running all other the place trying to find someone to mount them. Thanks for your concern.


Very nice lights. Easy to install and bright. Plenty of length for a 16ft boat trailer. I usually unplug my lights before backing the boat in, but I have forgotten a few times and they still work great.


After one year, these are still going strong. They are on a 24 ft Pontoon Boat Trailer and have been completely submerged (freshwater) multiple times, and are still going. No complaints from me so far. And the customer service was fantastic, in helping me find the correct setup.

Show More Reviews

Ask the Experts about this Optronics Trailer Lights

  • Ordering Aero Pro LED Trailer Light Kit with 4 Clearance Lights
    The LED trailer wiring kits we offer like the part # TLL36RK do only have one set of clearance lights that come with them but you can easily add additional ones with like the # MCL-91AK and you'd have all 4 that you'd need. So you'd want to order the # TLL36RK and two of the part # MCL-91AK and you'd be set.
    view full answer...
  • Can Main Harness of Aero Pro LED Trailer Light Kit be Extended Longer
    The 4-way wiring harness that comes with the # TLL36RK is 25 feet in length and while we don't have a version that comes with a longer harness you could pretty easily extend this 4 more feet with the # HM47114.
    view full answer...
  • Wiring Schematic and Installation of 4-Way Wiring and Lights for Trailer
    The Aero Pro LED Trailer Light Kit for Trailers Over 80" Wide - Submersible - Driver and Passenger # TLL36RK is a great kit for your trailer. The 4-way harness that starts past the trailer coupler will have a white ground wire that will get connected directly to the trailer frame. The brown and yellow wire will run down the trailer frame on the driver's side. The brown and green wires will run down the trailer frame on the passenger side. The connections at the tail lights will be color...
    view full answer...
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  • Trailer Wiring Kit Availability for Older Boat Trailer that Measures 22 feet
    Sounds like your trailer has a standard 4-way connector on it with standard type trailer lighting. We definitely have kits that would give you everything you would need. For a very basic kit we have the part # TLL9RK which comes with a 25 foot long harness to connect all of the lighting. This is a very popular option. Since your trailer is 22 feet in length this would come with more than enough wiring that you could trim to length if needed. Or for a kit with larger LED light type...
    view full answer...
  • New Trailer Lights have 1 Wire and Old Ones Used 2 Wires
    The new lights with the 1 wire ground through the mounting hardware. If you want you could attach a ring terminal such as # DW05702-1 to the ground wire on the trailer and run the hardware through it so the ring terminal is between the light and the trailer frame. You would only have to do this if the trailer has an aluminum frame. The other wire is the power wire.
    view full answer...
  • What is the Correct Wiring Needed to Re-Do Lighting on Trailer?
    The correct kit for your Shoreland'r PWC trailer is going to depend on its width. If it is over 80 inches wide, you will want the Submersible, Over 80-Inch Trailer Light Kit, # TLL36RK. If the trailer is less than 80 inches wide, you will want to go with the Submersible, Under 80-Inch Trailer Light Kit, # TL5RK. Each kit is going to come with tail lights, side marker and clearance lights, a wiring harness with 4-way connector as well as the mounting hardware. To make things easier on...
    view full answer...
  • Availability of LED trailer Light Kit for 2000 Shorelandr Trailer
    You can see all of our submersible LED type lighting products on the linked page. You can also refer to the linked article on trailer lighting requirements to see exactly what lighting is needed for your particular trailer. For taillights, click on that category at the top of the page; then select the shape, mounting type and dimensions most closely matching your requirements. We even offer complete LED lighting kits for trailers over 8-inches wide, part # TLL36RK from Optronics.
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  • Replacement LED Trailer Taillight Kit for Coachmen Q49b Catalina
    It might be a good time to just go with a whole new LED trailer light kit like the part # TLL36RK which comes with new LED taillights, clearance lights, a license plate bracket and wiring.
    view full answer...
  • Adding 2 Wire LED Clearance Lights to a Boat Trailer
    First, if you are switching to LED lights on the trailer, make sure to replace all of the incandescents with LEDs. Mixing the two styles can result in some of the lights not working and/or malfunctions. Clearance lights, LED or otherwise, that have 2 wires use one wire for power and the other is the ground that attaches to the trailer frame. Clearance lights run off of the running light circuit, the brown wire if you are looking at trailer light kit # TLL36RK. The wires from the old...
    view full answer...
  • Recommended LED Trailer Lighting For Over 80 Inch Wide EZ Loader Boat Trailer
    For your trailer wiring, I recommend the Submersible, Over 80" Aero Pro LED Trailer Light Kit w 25' Wiring Harness # TLL36RK along with the Identification Light Kit for Trailers over 80" Wide - Submersible - 3 LEDs - Red # MCL22RK3B. I recommend the Sealed, Thin Line LED Fender Clearance Light for Trailers Over 80" Wide, 10 Diode - Amber / Red # MCL65ARB for your fender lights.
    view full answer...
  • Wire Gauge Used on Optronics Aero Pro LED Trailer Light Kit # TLL36RK
    I spoke with my contact at Optronics regarding the Aero Pro LED Trailer Light Kit # TLL36RK referenced in your question. He stated that the kit features 20 gauge wiring for each of the wires. I have attached a couple short video demonstrations on this light kit that you can also take a look at.
    view full answer...
  • Solution to Add Auxiliary Brake and Tail Light to Truck Camper With Light Obscured by Bike Rack
    It is a smart idea to add an auxiliary light set to your truck camper bumper, and the LED Combination Tail Light Kit for Trailers # TLL36RK is option, though there is a more cost-effective and easier to install option with magnetic tow lights, which are normally used for flat towing vehicles but would be perfect for your application. The Heavy Duty Magnetic Tow Lights # TL21RK will plug right into a 4-way and could also work even if you have plugged your 7-way into the camper, so long...
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  • Do LED Trailer Lights Cause Hyperflashing Blinker Circuits
    LEDs only cause blinking issues when they are installed on a vehicle that previously had incandescent bulbs. LEDs on trailer don't cause any issues like this. There are only a few German vehicles that have trouble with trailers with LED taillights. Typically LEDs work great as trailer lighting since they draw such a small amount of amperage and last basically forever. A light kit like the part # TLL9RK would work great for you as long as your trailer is less than 80 inches in width....
    view full answer...
  • Butt Connector Recommendation for Use with Trailer Wiring Light Kit # TLL36RK
    The Deka 16-14 Gauge Butt Connectors - 5 Pack, # 05731-5 would be a great choice to allow you to wire up all of the lights you mentioned. The brown wire of the # TLL36RK is a single wire that you'd need to run from one side of the trailer to the other.
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  • Recommended Replacement Light Kit for Wesbar 3504 Trailer Tail Lights on Enclosed Trailer
    I have a lighting kit that will work well for your utility trailer. The kit I recommend is the Optronics Waterproof, Over 80 Inches LED Trailer Light Kit with 25 Foot Wiring Harness # TLL16RK. This kit includes LED waterproof taillights that will illuminate the license plate under the left side taillight. The taillights measure 8-1/16 inches wide x 2-7/8 inches tall x 2-13/16 inches deep. The depth of these taillights is more than the 2-1/4 inch to 2-1/2 inch depth you provided, but...
    view full answer...
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  • Some of the Diodes Not Lighting Up on Newly Installed LED Trailer Tail Lights
    There is either an internal problem with the LEDs themselves or there is a bad ground so that the circuit is not 100 percent completed causing only some of the diodes to light up. Many boat trailers use aluminum frames which do not offer the best ground. I recommend extending the ground up to the main trailer connector ground or to a steel component such as the axle. If this does not solve the issue then there is likely a problem with the LEDs themselves and the tail lights will need...
    view full answer...
  • Why Would Power Make it to New Trailer Running Lights Installed but Not Light Them Up
    How are you powering the new lights? Are you powering them in series or parallel with the old lights? You'll want to power them in series which means the power wire of the lights run to the power wire of the current lights and not in series which would mean the power wire of the new lights gets ran to the ground of the old lights. It sounds like you are powering them in series which would be your problem. You can only do this with lighting if the lights all are exactly the same.
    view full answer...
  • Recommended LED Trailer Light Kit for a Small Utility Trailer
    I recommend the Optronics LED trailer light kit # TLL36RK. The kit includes 2 LED tail lights, 2 amber side marker and clearance lights, license plate bracket, wiring harness and stainless steel mounting hardware. I also recommend getting a deluxe wiring installation kit # HM51020 because it includes all the necessary essentials for rewiring a trailer. I included a trailer diagram for you too.
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  • How to Tow a Trailer with Reverse Lights 2013 Nissan Leaf
    Yes, the Submersible, Over 80" Aero Pro LED Trailer Light Kit part # TLL36RK, Light Guide LED Backup Light part # BUL602CB, 25 ft. Wishbone 5-Way Trailer Harness part # A25W5B, and Right Angle 3-Wire Pigtail for Optronics Trailer Lights part # A47PB will all work together and give your trailer reverse lights. The Submersible Tail Light Kit part # TLL36RK comes with a 4-way wiring harness and since you will be using a 5-way wiring harness, the more cost effective solution would be to...
    view full answer...
  • 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...
    view full answer...
  • Trailer Keeps Blowing Running Light Fuse on Tow Vehicle Even Though All Wiring is New
    There is definitely a short somewhere or some major back feeding that is causing that running light circuit on the tow vehicle to blow. Usually this is caused by a frayed wire touching bare metal. Even though your wiring is new it is possible that when the skin was put on some wires got pinched but allowed the wiring to work for awhile. After a few trips towing the trailer and it moving around while traveling the wires could have gotten rubbed and frayed causing the short. Another possible...
    view full answer...
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  • All Lights on Trailer Working Except Rear Running Lights
    It is possible that the short blew the tail lights on the trailer. If they were incandescent lights and you have access to the bulbs could see if the bulbs are burned out. But on LED lights the circuitry could be fried and it is harder to test that. but you could apply 12 volt power directly at the lights' running light wires and if they do not light up it could mean the circuits are burned out. It could also be a ground problem. Ground problems normally show up when there is more draw...
    view full answer...
  • Replacement LED Boat Trailer Light Kit
    The side marker lights are LED and the Over 80 inch description is for DOT regulations. Trailers over 80 inches wide are required to have two side marker lights, one each side.
    view full answer...
  • Troubleshooting Low Voltage/Dim LED Trailer Lights from New Harness
    You will need to get at or very near 12 volts in order for the Optronics Trailer Light Kit part # TLL36RK to illuminate properly. What I would recommend you first do is check the grounds of the trailer and the assemblies themselves. You want to make sure the main trailer ground is connected to a clean metal surface on the trailer frame. This is the ground strap that runs from the connector on your trailer to the frame. The ground wires of the assemblies need to be connected to a clean...
    view full answer...
  • Troubleshooting Installation of Optronics Trailer Tail Light Kit TLL36RK
    The first thing you can check on your trailer tail light installation with Optronics kit # TLL36RK is the ground wire, which is the white wire. A bad ground will prevent operation of all lights. This white wire from the 4-pole flat connector must be firmly attached to a clean bare metal surface on the trailer frame. You can try sanding off any paint or rust to get down to the bare metal. Make sure the white ground wire is very firmly secured to the trailer frame. You also need to...
    view full answer...
  • Turn Signals and Brake Lights Not Working After Installing LED Lights on a PWC Trailer
    First make sure that the trailer connector is functioning properly with no trailer connector. Use a circuit tester to test the connection. If the brake and turn signals are not working without a trailer connected check to be sure there are no blown fuses on your vehicle and that the converter box has power if your vehicle requires one. Then on the trailer make sure that the wires are connected to the correct circuits, and that the white wire is properly grounded, at the trailer tongue...
    view full answer...
  • 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...
    view full answer...
  • Recommendation for 24 Volt Trailer Lights
    We do have some lights that are designed to work on a 24 volt system but none that are available in a kit. I recommend using light # STL23R24B. There are a few ways to mount this light. You can use a grommet and flush mount it using # A45GB. Or you can surface mount it with a bracket, # BK45BB. You will also use a wiring harness, # A47PB.
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  • Troubleshooting Trailer Lights That Blow Fuses When Connected to Tow Vehicle
    If each light assembly is grounded individually there won't be an issue with mixing LEDs and incandescent bulbs on a trailer. What is most likely happening is that the trailer light circuit is shorting out somewhere on the trailer frame due to exposed wire touching the trailer frame. That is most likely why your fuse is popping. The main ground strap from your trailer frame to your trailer connector needs to be connected to a clean metal surface. The light assemblies ground to the...
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  • Available LED-Type Trailer Lighting to Convert from Incandescent Bulbs
    Converting trailer lighting to the LED-type is a great way to both increase visibility and reduce power demand on the vehicle wiring system. LEDs are roughly 10x more energy efficient than incandescent lights. In some cases the trailer turn signal lights will need a load resistor to prevent what is called hyper-flashing (overly fast blinking of the turn signals) but this is something you really have to try to know. The other lighting circuits definitely will not need a load resistor...
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