Trailer kit with 2 stud mount, waterproof, LED tail lights; corrosion-resistant license-plate bracket; 25' wiring harness; stainless steel mounting hardware Lowest Prices for the best trailer lights from Optronics. Submersible, Under 80" LED Trailer Light Kit with 25' Wiring Harness part number TLL9RK can be ordered online at etrailer.com or call 800-298-8924 for expert service.
$54.95
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Trailer Lights > Tail Lights > Stop/Turn/Tail, Side Reflector, Rear Reflector > Submersible Lights > 5-1/4L x 5W Inch > LED Light > Red > Square, Kit > Surface Mount > Optronics

Submersible, Under 80" LED Trailer Light Kit with 25' Wiring Harness

Optronics Trailer Lights

(130 reviews)


Code:   TLL9RK

Price:$54.95


Shipping Special

Shipping Weight: 2 pounds

Quantity: 






Optronics Trailer Lights - TLL9RK

Trailer kit with 2 stud mount, waterproof, LED tail lights; corrosion-resistant license-plate bracket; 25' wiring harness; stainless steel mounting hardware


Features:

  • Red, submersible, LED trailer light kit with stud-mounted lights, license bracket, wiring harness and mounting hardware
  • 2 Red, waterproof, stud-mounted LED tail lights (STL8RB and STL9RB) for trailers less than 80"
    • Driver's-side light includes license illuminator
  • Great replacement for incandescent lights
    • No bulbs to replace
    • No brittle filaments
  • Corrosion-proof license-plate bracket
  • 25' Wiring harness with 4-pole connector
  • Stainless steel mounting hardware included
  • DOT approved


Specs:

  • Light dimensions: 5-1/16" long x 4-9/16" tall x 2-5/8" deep
  • Distance between mounting studs: 2"
  • Number of diodes per light:
    • Driver's-side: 14
    • Passenger's-side: 11
  • Power draw at 12.8 volts:
    • Stop and turn lights: 0.259 amps
    • Side marker lights: 0.062 amps
  • Lifetime warranty on LEDs


TLL-9RK Optronics Waterproof, Under 80" LED Trailer Light Kit with 25' Wiring Harness, Stud Mount








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Video of Submersible, Under 80" LED Trailer Light Kit with 25' Wiring Harness


Videos are provided As a guide only. Refer To manufacturer
installation instructions And specs For complete information.




Video Transcript for Optronics Trailer Lights TLL9RK Review

Today were looking at part number TLL9RK this is a submersible LED trailer light kit for trailers that are less than 80 inches wide and its made by Optronics. By submersible we mean these are fully waterproof they are sealed. You get red LEDs on both. On the drivers side light youll see on the bottom a clear lens, thats your license plate illuminator.Now you know that LEDs last thousands of hours, youll never have to replace a bulb. Pardon me. These are stud mounted, there are the studs on the back and the license plate bracket also mounts on the studs like that.

You get your 25 foot wiring harness with a 4-pole plug, a corrosion proof license plate bracket for the driver side and then also get all this stainless steel hardware that you need for installation. These meet all of the requirements of the Department of Transportation and they come with a lifetime warranty on the LEDs. Now were going to turn the lights off and Ill show you how they work. Thats your taillights, heres your brake lights and now well show you how the turn signal works. Theres your drivers side turn signal and heres your passenger side.

Okay, I can turn the lights back on. There you have it for part number TLL9RK from Optronics, the Submersible LED Trailer Light Kit with 25 Feet of Wiring. .


Customer Reviews

Submersible, Under 80" LED Trailer Light Kit with 25' Wiring Harness - TLL9RK

Average Customer Rating:  4.8 out of 5 stars   (130 Customer Reviews)


Trailer kit with 2 stud mount, waterproof, LED tail lights; corrosion-resistant license-plate bracket; 25' wiring harness; stainless steel mounting hardware


- TLL9RK

by: Keith C.05/04/2015


I purchased this kit to replace the existing setup on my 4' x 8' utility trailer that had served me well for about 15 years. I was having problems with blown fuses when I turned the vehicle headlights on, and then when I used the turn signals as well. It was pretty clear that my problems were coming from the old light fixtures, but I decided to go ahead and replace the whole wiring harness at the same time since the extra expense was nearly insignificant. This kit came with almost everything needed to complete the job. I added some 1/4" corrugated wire wrap to help protect the wires from abrasion, and a few waterproof heat shrink tubes to seal the connections (2 for each light, & 1 for the ground wire). I chose to solder my connections and then seal them with the waterproof heat shrink tubes. There was enough room inside the light fixtures to enclose the connections and keep them out of the weather. The whole process of removing the old lights and wiring, and then installing the new components took about two hours of leisurely work in the back yard. It was an easy process, and the new lights are much brighter and more reliable now. No more blown fuses. They have the added advantage of drawing very few amps as compared to my old incandescent fixtures. I think it was well worth the little extra cash to invest in the LED lights. The kit included a flat 4 wiring harness to connect to the vehicle, which made my neighbor happy when I gave it to him - my truck was already wired for a 4 flat connection. In all, this was the most recent of my 3 or 4 purchases from etrailer.com, and I will certainly be back for more. The prices are good, shipping is fast, and there is wealth of instructional information to consume. 189802



- TLL9RK

by: TCP08/23/2013


I was very much surprised that the hardware was stainless steel, which is great for salt water trailer usage. I was disappointed that the wiring harness was light weight wire, I would guess 20 gauge, but it should be sufficient for led lights. All in all I would purchase this again. 96616


Comments

I received an e-mail requesting how I rate these trailer lights after one year of use. I have had them on my trailer over one year. These lights go under salt water each time I put my boat in the water - they are working just fine after more than a year. I would purchase these lights again.

TCP - 02/22/2015

9694



- TLL9RK

by: seb6283109/26/2011


Just installed this on an old Tee Nee trailer. Instead of using the enclosed clips to attach the new wires to the outside of the frame, I used the old wires to fish the new wires through the frame. All the pieces seem sturdily built, and the main connector is of tough Neoprene, connects solidly. My only quibbles are minor, regarding the instructions and accessory hardware. The instructions refer to "butt connectors", but the hardware package did not include any butt connectors. Instead, there were three parallel splice connectors, of the type with a "guillotine" that you press onto both wires by clamping the whole thing with a pair of pliers. Four were needed, not three, so I had to fish one out of my basement. These connectors are not weatherproof, even though they live outside the trailer frame, so I covered them with several strips of duct tape to keep out the rain. Will see whether that works. The installed product works fine, and I look forward to never having a light bulb burn out. 24624



- TLL9RK

by: NeilG12/07/2012


I decided to rewire a small utility trailer that I use for trips around town. The lights I had previously used incandescent bulbs and suffered from a few issues, namely they were too dim, and they were way too susceptible to corrosion. They intermittently worked and got to the point they were shorting out and blowing my trailer fuses. These LED lights are simply wonderful. Bright and clear and with long life associated with LEDs. I also have a premium small cargo trailer that came stock with LED lighting, and there is just no comparison. Your trailer will be very visible using this product. Once you use LED lighting, you'll never use anything else! 60884



- TLL9RK

by: John04/14/2014


The LED light kit arrived extremely fast, was exactly as described and worked perfectly. Customer service was great as well. 124959


Comments

Still great after 1 year!

John - 04/15/2015

10837



- TLL9RK

by: Nick H06/04/2012


The lights on our 6 year old SnowBear ATV/utility trailer have been problematic for the past year or so and finally the tail light portion of the lamps just stopped working. I bought the Optronics TLL9RK LED kit to replace the whole system, but ended up reusing the original wire runs, soldering them to the kit lights' pig tails. I also made use of the license plate bracket to replace the broken original. Less than a 20 minute job & everything works and looks great. Even the unreplaced original incandescent side marker lights were working again. I'll keep the unused wiring & connectors as spares in case I need them in the future. 42775



- TLL9RK

by: Jason O.04/22/2014


Quality LED kit at a great price. No more messing around with corroded bulbs! 126413


Comments

They are working great and are still nice and bright!

Jason O - 04/22/2015

11013



- TLL9RK

by: roger webr02/15/2012

Ford F-150


All went together fast and easy. But I would mentioned that I am replacing an existing lamp and harness. Two issues was my son's trailer in a box was bolted together in several well painted major parts. Well painted caused ground plane issues. I just wanted to do over the installation to ensure success. I ran dedicated ground wires and grounded same to trailer in multiple places. I think that is the major reason for success. Also the harness adaptor did not match my son's Ford F150. Oddly enough it was difficult to fined an adaptor that somewhat fit properly. Which I cut into place for the second time. 31883



- TLL9RK

by: Bernie W08/15/2014


Used crimp connectors for all connection. Nice product 146968


Comments

LED lights have been much more visible

Bernie W - 08/17/2015

14348



- TLL9RK

by: Paul H.04/10/2012


Seamless transaction and gorilla-with-a-crayon installation instructions. Simple and smooth... doesn't get better than that. Phooey, I even got to talk to a real-live-helpful person!. And the box arrived like magic on my porch like a package under the Christmas tree. Would I do it again.... I already did, with another order. And I'm talking to others about my good experience. 36778



- TLL9RK

by: Mark B.08/14/2015


Easy installation and high quality prod uct. 219142


Comments

Still working great after one year

Mark B - 08/14/2016

20227



- TLL9RK

by: Dave D02/04/2015


This comes with a wishbone harness, which is what I needed. The flat 4 plug is a little odd. It has a shield over the ground pin, which is nice, but does not fit quite so easily on the existing one on my truck. It does come with a matching vehicle side plug, but I was not about to go swapping out the one on the truck. The lights themselves are sturdy and bright. There was one set (of four) of mounting nuts and washers missing from the box, but I suspect that was just a fluke at the factory. It is not as if I don't have enough spares laying around. 172381



- TLL9RK

by: Joel S10/29/2012


This was a replacement of the 14 year old utility trailer lighting system. These new lights were good quality and included stainless hardware. It only took me a couple hours to rewire. The new light mounting holes matched exactly the old lights. Problem with lights are usually related to grounding issues. Because the new lights had a grounding wire I went ahead and did a wired ground. The result was the lights are very bright and you can really see the turn signals and brakes. I am 100% pleased. 58293



- TLL9RK

by: Paul P.08/09/2016


These lights are really sharp. LEDs are nice and bright and should be better than my original set. Installation was not difficult. For connecting to the wire harness, I used waterproof, heat shrinkable butt connectors I got from an auto store, as the twist connectors that came with the lights are not really suitable for boat trailers. The enclosed three way Scotchlok connectors made it real easy to wire in my side marker lights. Look forward to many years of ware with this set. 281817



- TLL9RK

by: Jackie02/12/2013


I've had my 5' x 10' tilt bed trailer for almost eleven years ago. I mainly use it to haul riding mowers, and going to the dump. Replaced the lights about five years ago with a cheapo set of lights. They never were very bright, and only worked sporadically. These are a quality upgrade that should last a long time. Installation was straight forward and painless. And they're MUCH brighter than either of the previous incandescent sets. 65946



- TLL9RK

by: Willard H.04/19/2012


I ordered the LED trailer kit along with the receiver 2 inch rubber receiver covers. The lights fit the mounting holes that I already have for the previous lights. That was perfect. The extra length of wiring helped to make the trailer wiring more resistant to the weather. Those two items made aqll the difference for me. I iwll order from etrailer again and will tell my family and friends abot your web site. 37786



- TLL9RK

by: Tom B.04/16/2015


Great Lights! The real bonus is the fantastic customer service after the sale. Not only where the lights shipped super-fast, the follow up communication from Bill and George was extraordinary. Easy to follow directions were included in the light kit that made installation so simple a cave man could do it. Truly a pleasure to do business with a company that understands customer service and delivers! 185464



- TLL9RK

by: WAYNE M.06/30/2013


VERY GOOD LIGHT KIT AND INSTRUCTIONS. THE ONLY THINGS I DID NOT USE, WERE THE LICENSE PLATE HOLDER, WHICH IS PLASTIC. MY OLD METAL ONE WAS IN GOOD SHAPE, AND THE SHORT CONNECTOR WITH BARE WIRES I DID NOT USE . I WENT TO LOCAL AUTO SHOP AND BOUGHT A 48 INCH 4 BLADE EXTENSION PLUG THAT PLUGED INTO MY VEHICLE AND INTO THE LONG WIRING HARNESS THAT CAME WITH THIS KIT FOR A SIMPLE PLUG TOGETHER HOOK UP. 86813



- TLL9RK

by: Bob C05/24/2012


Very nice kit to replace my 20 year old incandescent lights. Easy to install. They are much brighter than the old which increases the safety. The only issue was getting a good ground on the trailer but that is the installers problem, not the product. The pice again was about 1/2 of the local parts store and delivery was in a couple of days. Good products.... good delivery... 41530



- TLL9RK

by: Craig07/18/2015


I had to rewire my trailer. This kit installed easily but I only had to wire the trailer, not my vehicle. I am hoping the LED's will be an improvement over my old lights that used bulbs.The only question I have is the lights need to be hooked to the wires using wire nuts. I question if over time the connections are going to corrode more easily or come loose. 212744



- TLL9RK

by: Gordon A04/23/2013


Products received were as described and appear to be of good quality. They were received in an expedient manner and packaged very well. Installation was a breeze and everything is working as it should. From ordering to delivery and installation, everything went very smoothly. I highly recommend etrailer and will use them again when the need arises 77401



- TLL9RK

by: Richard08/17/2015


Its not he first time I purchase this product, its easily fitted on a trailer with its 2 back threaded studs and some wiring. The delivery time was exceptional I was expecting it at a later date since I didn't take express shipment I Received it within 2 working days of my purchase date. Great service and great product. 219773



- TLL9RK

by: West central Indiana04/01/2016


Very pleased with offerings helpful videos and fair pricing, shipping is also reasonable. I actually tried to buy similar products at an auto parts store and counter person couldn't be certain they would work on my vehicle, at etrailer everything is organized by manufacturer and year and has install videos. 242631



- TLL9RK

by: John11/18/2015


Product received was as described on website. Easy install on my 10ft open cargo trailer. LED lights much brighter than original bulb type lights. Hopefully these lights will be trouble-free, as the original bulb lights required excessive maintenance and constant attention to keep them in working order. 232217



- TLL9RK

by: Shane Vigil08/03/2016


Install was easy, its works great, and the tail lights are 10 times brighter than the incandescent tail light. I didn't use the license plate holder, and the connector for the vehicle as well. It was a restoration project on a 5 x 10 single axle flatbed trailer. Definitely will order this kit again 279293



- TLL9RK

by: Jeff06/14/2012


Ordered the LED light kit to upgrade my cattle trailer. They work great and got here fast. Thanks. 44146



- TLL9RK

by: John M.07/15/2016


No suprises - thank you. I am re-lighting a vintage boat trailer that had only a single driver side marker light. These LEDs are a cost efficient way to bring contemporary lighting to an old trailer. I used these lights on a utility trailer last year as well - simple, solid and great lights. 272160



- TLL9RK

by: Derek C.05/14/2012


This is a great item if you have to replace the wiring on a trailer. I put these on a car dolly and the installation was a snap. I just ran the wire in some wire loom or braid to add a little bit more isolation from the vibrations that can cause the wires to fray to extend the units life. 40280



- TLL9RK

by: david knoedler03/26/2013


Nice kit with all appropriate hardware. My suggestion would be to include waterproof butt connectors with heat shrink coating so the wiring could be properly connected to the pigtails on the lights. Nothing $4 at the autoparts store can't fix but it would be nice if it was included. 72496



- TLL9RK

by: Thomas R07/12/2012


Lights were easy to install and look great. Only two small issues. 1. The trailer ground needs to be longer. I had to add about 8 inches to the ground so the harness could reach. 2. Had to modify the harness to fit my adapter, which only involved trimming off some of the rubber. 47587



- TLL9RK

by: Ron B08/21/2013


Due to some physical setbacks, I have not installed my new lights on my boat trailer yet but I will say this..... Service was spectacular with up to date emails concerning the status of the shipment and the arrival which was well ahead the time they stated. Thank you! 96247



- TLL9RK

by: Rich H.03/20/2015


Ordered my submersible trailer lights online and within a few hours got and e-mail stating that it was ready and was shipped shortly after. Received my item a few days later. Excellent service and great product. Will recommend this site and product to my friends. 179962



- TLL9RK

by: Rob Roy04/12/2016


Everything came fast. Replaced the wiring harness on the car for the trailer, replaced the wiring harness on my 5x8 trailer, and all the lights on the trailer. All the directions were great and I had no problems with any of the installations. 243976



- TLL9RK

by: Larry07/30/2014


Good product, ez to install. Online instructions very complete. As in other reviews ground line should be longer, however, problem solved by using ground wire from second adapter with kit. Lic. plate holder would be better if it was metal. 143356



- TLL9RK

by: Dean E05/22/2015


I found just what I wanted on the web site - immersible tail light kit. It arrived quickly, was priced right, and the installation video really gave me confidence. The lights work great with plenty of brightness. Thanks again, Etrailer! 194952



- TLL9RK

by: Jeff T09/18/2014


Worked perfectly, nice and bright compared to my old lights, and no messing around with bulbs anymore, worth every penny. My only complaint was one of the lock washers and nuts was missing from the light kit, everything else is good. 151881



- TLL9RK

by: David09/02/2015


These are the best trailer lights on the market for 2 reasons. Sealed LED bulbs and STAINLESS mounting bolts. I use them on 4 boat trailers, 3 construction trailers and 1 dump trailer. All have worked great with no failures. 223482



- TLL9RK

by: Jesse R.04/23/2015


Good product. Bought some last year for my boat trailer. Got tired of burned bulbs and worrying about a ticket coming back from boat ramp. Buying a second set for my 5x8 utility trailer. Performed as expected for an LED. 187673



- TLL9RK

by: Jordan06/24/2013


Lights are super bright with the lights off they are still effective with the reflectors. I would easily recommend LED's anytime. I preferred this light over many because this had the side marker on the back of the trailer. 85750



- TLL9RK

by: Flyboy4702/16/2011


I ordered a new set of tail and side lights for my trailer. The kit arrived promptly. Had them installed with no problem that afternoon. I have ordered from eTrailer before and as always got great service. 7243



- TLL9RK

by: Kelvin03/16/2013


This LED light kit is excellent. Everything needed for standard installation can with my kit. The instructions were clear and helpful. I recommend this product to replace older bulb type trailer lights. 71143



- TLL9RK

by: Loren03/08/2011


This LED trailer wiring package installed exactly as described. I was very impressed by the customer service and the personal touch. Keep up the good work and I'll continue to order from etrailer.com. 8765



- TLL9RK

by: Dennis R08/01/2016


ATINITIAL INSTAL EVERYTHING WAS FANTASTIC. WENT TO USE THE TRAILER LAST WEEK AND THE LIGHTS WOULD NOT COME ON. PROBABLY A POOR INSTALL (LACK OF GROUNDING) ON MY PART. JUST NEED TIME TO INVESTIGATE. 278060



- TLL9RK

by: David C.10/31/2013


Shipping is never an issue with these guys. Lights look great on the trailer. Waterproof boat trailer lights are a must, and LED's are just that much better. Less money than I found local. 105805



- TLL9RK

by: Ed01/21/2013


The only thing that would make this any better would be water proof connectors. I launch in salt water so you know what is going to happen. But it was still a great item and easy to install. 63706



- TLL9RK

by: Joel F.08/27/2011


They are very bright! Did I mention they are bright! Great quality at a great price! Why would I waste my time and money buying them Locally when I can have them delivered cheaper!!! 22939



- TLL9RK

by: miltb12/10/2012


Product was delivered on time and just as pictured on web site. Not installed yet but appears to be very good quality. E-trailer staff kept in touch from purchase through delivery. 61098



- TLL9RK

by: john curry07/07/2011


Products came swiftly, and there were several e-mails with a phone number to check on the order and shipping. Excelent personal service for an internet seller. Many thanks, John 18856



- TLL9RK

by: R. Bruce07/25/2016


This is a replacement for th same thing. I installed this overa year ago and was very happy with it. A friend moved my trailer and smashed the lights. I wanted to replace them. 276182



- TLL9RK

by: Hartman W09/21/2012


I just received my order in the mail and it came so fast I could not believe it. I ordered on a Saturday and received a email confirm on Sunday, and it arrived on Wednesday. 55422

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Ask the Experts about this Optronics Trailer Lights
Do you have a question about this Trailer Light?


  • Wiring a 2011 Victory Motorcycle and Trailer for Towing
  • For simplicity, I would recommend wiring the motorcycle trailer as a vehicle trailer would be. A powered converter wiring kit, like part # 119179KIT, would be connected to the motorcycle, which would provide a 4-pole trailer connector. The converter combines the brake lamp and the directional signal onto one circuit. The 4-pole connector utilizes four circuits, the white wire which is the ground, the green wire carries the right turn and brake light combined on one circuit, the yellow...
    view full answer...

  • Trailer Side Marker Lights Not Working
  • It sounds like you do not have the side marker lights properly grounded. If the lights have a separate ground wire to attach to the trailer frame it will need to be connected to a suitable point on the trailer frame. The closer to the light the better. If you light does not have a separate ground wire then it is grounded through the mounting holes and you will need to be sure that the light is mounted directly to the trailer frame and making a good connection. Use a circuit tester,...
    view full answer...

  • Parts Needed to Replace All Wiring a Single Axle Cargo Trailer
  • To completely rewire your cargo trailer, I would recommend picking up a trailer light kit like the Standard Light Kit, # TL5RK, or # TLL9RK for LED lights. These kits include all necessary wiring and hardware needed to install the lights on your trailer. The LED light kit does not include clearance lights. To add clearance lights, I would recommend using # MCL31AB. The best option would be the LED lights because they only use a fraction of the power that the incandescent lights use....
    view full answer...

  • Are All LED Lights Submersible For Use On Boat Trailer
  • When selecting an LED light, if the description states it is waterproof or submersible then the light can be submersed in water. The item you selected, Waterproof, Under 80 Inch LED Trailer Light Kit with 25 Foot Wiring Harness, part # TLL9RK, has encased LED diodes. Water can enter the light lens but not the LED casing. There are also 2 holes that allow water to drain out of the lens. Part # TLL9RK are used for the rear trailer lights for running, turn, and brake lights. For sealed...
    view full answer...

  • Troubleshooting Dim Lighting of a LED Trailer Light Kit Optronics # TLL-9RK
  • Since there are a lot of variable in this situation the first thing I would recommend is to try and narrow down the problem to either the truck or the trailer. In order to do this I would try hooking your Dodge Ram 2500 up to another trailer with trailer lights that are known to work and then test the tail light functions in that situation. Or, you could hook your trailer up to a friends truck that you know has functional trailer lights and see if the trailer lights still react the...
    view full answer...

  • What is the Difference Between Submersible and Waterproof Trailer Tail Lights
  • A submersible tail light can let water in, there is usually a hole at a low point so the water can drain out. A waterproof light should be sealed to keep out water. For either type, you would also want to seal out water where the tail light wiring splices into the trailer wiring. Shrink tubing works well for this. You can also wrap up connections with electrical tape like # PTW502. Or you could use a combination of liquid electrical tape, # SWC50122, and regular electrical tape. Ideally,...
    view full answer...

  • Left Side Trailer Lights Not Working With New LED Trailer Lights Installed
  • The first thing that I would recommend checking are the ground connections for the trailer side connector and the lights. Poor ground connections are the most common culprit of trailer wiring issues. The lights will have either a ground wire or they will ground through the mounting hardware. Each of the ground connections should be secured to a clean, bare metal surface on the trailer frame or to the negative terminal of a trailer battery if you have one. If the ground connections check...
    view full answer...

  • Troubleshooting LED Trailer Lights Blinking and then Not Working at all on a Boat Trailer
  • The first thing I would do is check all of the ground locations on the trailer. If you have a ground that went bad it is very likely that at first it was causing the lights to blink and then finally failed completely. If you check all of the grounds and they are connected securely to clean bare metal at each light and at the trailer coupler and your lights still do not work correctly, I would then check the vehicle side connector for proper function. Use a circuit tester, like part #...
    view full answer...

  • Availability of Wiring Adapter to Convert 12-Pin NATO Trailer Connector to 7-Way Blade Style
  • We do not offer any adapters to convert a 12-pin military trailer connector to a 7-way RV-style plug like that on part # H20043 but we can help you gather the parts you'll need to wire in a new trailer plug to match that on your pickup. We can also offer you an easier alternative. To re-wire the trailer conector you'll need a wiring junction box # 38656, a trailer-side plug like the 4-foot # H20043 (or longer versions such as 6-foot # H20044 or 8-foot # H20046) and ring terminals like...
    view full answer...

  • Are the Waterproof, Under 80 inch LED Trailer Lights TLL9RK Completely Sealed
  • I went out to the warehouse and pulled the Waterproof, Under 80 inch LED Trailer Light Kit, item # TLL9RK, to see exactly what Optronics means by waterproof. Upon initial inspection the housing itself is not water tight. Water can access the housing through the hole that the wires enter the light through and there is a drain hole at the bottom of the light near the center of the front lens. I then removed the front and side lenses and found that the led light system is encased (sealed)...
    view full answer...

  • Options to Replace Square Tail Lights with LED lights for Over 80 Inch and Under 80 Inch Trailers
  • If your trailer came with the square Peterson lights then you can use the Submersible LED Trailer Light Kit, # TLL9RK. The Over 80 designation that you see is a federal guideline for trailers that are over 80 inches wide, and extra lighting is required for these trailers. You should check federal and state lighting guidelines if you are not sure that your trailer has the correct lighting installed on it. At this time we do not have an LED version of the Over 80 inch square tail light...
    view full answer...

  • LED Trailer Light Kit # TLL9RK with Stainless Steel Mounting Bolts Recommendation for Salt Water
  • This Submersible LED Trailer Light Kit with 25 foot Wiring Harness, part # TLL9RK, uses all stainless steel mounting hardware. The mounting hardware of this trailer light kit should work well in the saltwater conditions that you use your boat in.
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  • How to Wire a Trailer for Tail Lights
  • First, lets make sure you have all of the parts you need to wire a trailer for lights. If you have an old trailer and want to replace everything, I recommend using a kit like our Peterson Tail Light Kit, # 432800 and our trailer wiring installation kit # HM51020. We also have an LED kit, # TLL9RK. Step 1 - The trailer connector should extend 2 - 3 feet past the tongue. Attach the ground wire directly to the tongue of the trailer using a self tapping screw # 101131802 and a ring terminal...
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  • Timbren Axle-Less 3500-lb Suspension System for Off-Road Teardrop Trailer
  • We offer two Timbren axle-less systems rated for 3500-lbs, part # A35RD545E which has spindles with a 4-inch drop, and part # A35RS545E which would be better for your application since it will not reduce your ground clearance. For off-road use you do not want to use a kit that has drop spindles; this type is better for a ramped trailer where you want a low deck height. Kit # A35RS545E includes the frame-mount suspension assemblies, E-Z Lube spindles with 4- bolt brake flanges, hub/drums,...
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  • Lens Replacement Recommendation for STL8RB and STL9RB
  • Yes we carry replacement side lenses for the part # STL8RB and # STL9RB. For that you would want the part # AL9RB. For a replacement front lens you would want the part # A8RB.
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  • Availability of a Submersible Trailer LED Light Kit
  • For a waterproof LED light kit you would want to use # TLL9RK. I can verify that his kit is listed as waterproof which would include it being submersible. The # TLL28RK kit is comprised of lights not listed as submersible as you have said.
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  • Running Lights on Horse Trailer Do Not Work Towed by a 2001 Dodge Ram
  • Brake lights and turn signals on a trailer are a combined circuit but the running lights are their own circuit. On a vehicle side 7-Way, the pin in the 11:00 position is for running lights. Use a circuit tester like # 3808 if needed to test the pins and determine if the problem is on the truck or trailer. Since everything else is working, it is probably an issue with the trailer. But, make sure that the 7-Ways on both the truck and the trailer are clean and corrosion free. Corrosion...
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  • All LED Lights on Trailer Work Except Running Lights When Hooked To 2008 Chevrolet Silverado
  • There are a few possibilities and things you will need to check on your trailer and your vehicle. You will want to start by checking the ground wires on the lights, make sure each light has a good ground connection to clean metal surface. Then, you will want to check the wiring on the trailer, start at the 4-way connector and visually inspect the wires for any cut or exposed wiring. If you find cut or exposed wiring where the protective coating on the wiring is missing, you will...
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  • How Much Power do Optronics Trailer Lights, # TLL9RK, Draw
  • On the Optronics Trailer Lights, # TLL9RK, there are 2 different tail light assemblies. The driver side which includes the license plate light, draws a max of 0.254 amps at 12.8 volts (brake/turn lights) and the running lights draw 0.112 amps at 12.8 volts. The passenger side light is a little different since it does not power a license plate light. It draws a max of 0.259 amps at 12.8 volts (brake/turn) and 0.062 amps at 12.8 volts for the running lights.
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  • Are Replacement Lens Available For Optronics Submersible LED Trailer Lights
  • The Optronics Submersible LED Light Kit, part # TLL9RK is a waterproof system that features 2 LED stud-mounted lights and a corrosion-proof license plate bracket, along with a 25 ft wire harness and the mounting hardware. I spoke with my contact at Optronics and they told me that because this light kit features SMD(surface mount diodes) there are no replaceable lens available. I have attached a link to a product review video for this light kit you can check out. I also recommend using...
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  • Trailer Marker Lights Do Not Illuminate on the Fender Of Hallmark Trailer
  • I would begin by making sure each marker light has a good ground connection to a clean metal surface. Each light should be grounded to a rust-free, metal surface. If the ground is achieved through the metal base of the light, there may be corrosion or rust that has formed which is causing a bad ground. I would also recommend checking the power supply to the lights, you can do so with a circuit tester like part # 3808. You will want to inspect the wiring making sure there is not a short...
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  • How Does the Submersible, Under 80" LED Trailer Light Kit part # TLL9RK Wire to Trailer
  • For the assemblies that come with the Submersible, Under 80" LED Trailer Light Kit part # TLL9RK that you referenced the white wires will need to be grounded, the brown wires will run to the running lights circuit, the green wire will run to the right stop/turn circuit and the yellow wire will run to the left stop/turn circuit. I attached a picture that has a standard trailer wiring diagram that should be helpful for you. The distance between the mounting studs is 2 inches.
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  • Lights On Boat Trailer Do Not Come On When Lights On Ford F-150 Are Turned On
  • I would begin by checking the grounds on your trailer. You will want to make sure each light is grounded to a clean metal surface. The item you selected, Custer Trailer Light, part # TLK01, includes a plastic license plate bracket. Sometimes this can cause a bad ground connection for the tail lights. I would also check to make sure the vehicle side connector is grounded and to make sure the auxiliary fuse on your vehicle is not blown. There is also the possibility that the vehicle wiring...
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  • Wire Gauge Used in Optronics Standard Trailer Light Kit # TLL9RK
  • I checked with my Optronics representative, who tells me that the 25 foot long wiring harness included with the # TLL9RK Standard Trailer Light Kit is constructed of 20 gauge wire.
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  • Troubleshooting Dim LED Tail Lights On One Side Of Boat Trailer
  • Many times the issue with a dim light on one side or the other is caused by a poor ground connection. You will want to inspect all of the ground locations as well as the ground wires coming from each light. Check for loose connections or pinched or bare wires. Since you said it is a submergible light, check to make sure the light housing has not been damaged and no water has managed to get inside the housing. If the lights on your trailer use a plug-in style pigtail harness look for...
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  • Submersible LED Trailer Light Kit Recommendation for 17 foot Boat Trailer
  • For an LED light kit that is submersible you would want the part # TLL9RK. This would work great on your boat trailer. This would work with the part # CE26057AA bracket as well. I attached an install video for you to check out as well.
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  • Parts Needed to Re-Wire Car Hauler Trailer Lights and Brakes
  • We can help you with selecting parts to re-wire your trailer's lights and brakes. Trailer size affects the number and types of lights required to be DOT-compliant. I linked for you an article that covers the lighting requirements for trailers of various sizes. This will help you determine what is required for your specific trailer. For lighting you might want to consider one of our complete lighting kits. Kit # TL29BK uses standard incandescent light bulbs and kit # TLL9RK uses high-efficiency...
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  • Troubleshooting Trailer Connector On 2005 Ford F-150 With Factory Trailer Harness
  • The best way to check the harness on your 2005 F-150 out is to use a circuit tester like part # 3808. Have someone sit in the truck and run through the functions while you check the pins on the 4-way and 7-way pins. Then do the same and check the wires leading into the back of the harness to see if you are getting signal there. Keep working your way forward to find where the culprit is. You may find there is corrosion or a wire may be pinched or shorted out. If you find the connector...
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  • LED Trailer Lighting Kit and Load Resistors to Prevent Hyperflashing
  • We do offer complete LED-type trailer lighting kits such as Optronics # TLL9RK. This DOT-approved kit includes everything you need for a trailer under 80-inches in width. It's included 4-pole harness is 25-feet long. LEDs use so little power that they can sometimes confuse a wiring harness. The simple fix to this issue is to use load resistors. These add resistance to the system and fool the harness into thinking it is sensing the resistive load typical of a standard incandescent bulb. Load...
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Information for this part was:

Photos by:
Theodore B
Expert Research:
Michael L
Written by:
Tyler C
Expert Research:
DeAnne T
Expert Research:
Robert G
Expert Research:
Patrick B
Expert Research:
Michael H
Expert Research:
Reno H
Expert Research:
Jameson C
Video Edited:
Jacob T
Expert Research:
John H
Expert Research:
Adam R
Installed by:
Cole B
Expert Research:
Jeffrey L
Updated by:
Sarah W

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Info for this part was:


Photos by:
Theodore B

Expert Research:
Michael L

Written by:
Tyler C

Expert Research:
DeAnne T

Expert Research:
Robert G

Expert Research:
Patrick B

Expert Research:
Michael H

Expert Research:
Reno H

Expert Research:
Jameson C

Video Edited:
Jacob T

Expert Research:
John H

Expert Research:
Adam R

Installed by:
Cole B

Expert Research:
Jeffrey L

Updated by:
Sarah W

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.







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