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.
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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

ratingratingratingratingrating (77 reviews)


Code:   TLL9RK

Price:$54.95


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Shipping Weight: 2.44 pounds

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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
    • Lifetime warranty on LEDs


Packaged kit includes 2 LED stud-mount tail lights and a corrosion-proof license-plate bracket.

Contents: (1) STL8RB, (1) STL9RB, (1) license-plate bracket.

Equipped with a 25' wire harness and stainless steel mounting hardware.



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





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 Demo Optronics Trailer Lights TLL9RK
Optronics Trailer Lights TLL9RK Review
Video review optronics submersible led trailer light kit tll9rk
Optronics Submersible Trailer Light Kit Installation

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:  ratingratingratingratingrating4.8 out of 5 stars   (77 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

ratingratingratingratingrating 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






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ratingratingratingratingrating 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






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ratingratingratingratingrating 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






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ratingratingratingratingrating by: roger webr02/15/2012


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






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ratingratingratingratingrating 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






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ratingratingratingratingrating 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






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ratingratingratingratingrating 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






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ratingratingratingratingrating 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






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ratingratingratingratingrating 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

ratingratingratingratingrating 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






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ratingratingratingratingrating 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






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ratingratingratingratingrating by: Jeff06/14/2012


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






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ratingratingratingratingrating 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






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ratingratingratingratingrating 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






- TLL9RK

ratingratingratingratingrating 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

ratingratingratingratingrating 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

ratingratingratingratingrating 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

ratingratingratingratingrating 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

ratingratingratingratingrating 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






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ratingratingratingratingrating 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






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ratingratingratingratingrating 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






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ratingratingratingratingrating 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






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ratingratingratingratingrating 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






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ratingratingratingratingrating 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

ratingratingratingratingrating 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






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ratingratingratingratingrating 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






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ratingratingratingratingrating 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






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ratingratingratingratingrating 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






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ratingratingratingratingrating 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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ratingratingratingratingrating by: Lance B10/07/2014


Have not had a chance to install the light. They are what I wanted and believe they will be superior to the bulb tail lights I currently have. Looks like an easy install 154990






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ratingratingratingratingrating by: Works10/01/2014


I had to attach the white ground wires, even tho the product claims to be self grounding, but other than that install was quite easy. Haven't used in the water yet. 153954






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ratingratingratingratingrating by: John B.08/22/2013


Thanks for your excellent service! I was very appreciative of the shipping upgrade... Installed everything the same day and everything works perfect! Thank you again! 96379






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ratingratingratingratingrating by: k09/16/2014


fast shipping great quality! These lights were much better quality and less $$ than the pair i purchased from Wal Mart that did not last 6 mos and were not as bright 151425






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ratingratingratingratingrating by: Chris V08/24/2012


Works as expected. Wired up quick and easy. Lights are bright. I added a set of side marker lights too (MCL36AB). No problems hooking up to my 2012 VW Touareg. 52838






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ratingratingratingratingrating by: Eric S07/16/2013


Great product. I love the lights. My biggest concern is why they don't include weatherproof connectors. Super important. I just used my own instead. Thanks! 89892






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ratingratingratingratingrating by: Ed S.08/25/2013


Product was delivered promptly. Lights were easy to install and work well. The LEDs are nice & bright compared to standard incandescent bulbs. 96868






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ratingratingratingratingrating by: Tyrone04/02/2014


Lights work great but they could match the wire colors better. Seems like they came from two different vendors. They worked fine. 123483






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ratingratingratingratingrating 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






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ratingratingratingratingrating by: Brian F.03/01/2012


I was tired of changing bulbs every other weekend so I upgraded to LED. They work great! I should have done this long ago. 32821






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ratingratingratingratingrating by: Roger08/29/2014


Haven't installed lights yet, so I don't feel like I can make a comment yet. They look nice and the shipping was fast. 149279






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ratingratingratingratingrating by: Andrew09/11/2012


sGreat, i first believed this product came with mounting brackets for my trailer, however i learned that it does not. 54298






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ratingratingratingratingrating by: Pat M09/22/2013


LED lights are much brighter than the old ones, easy to install. Product was as advertised and shipped quickly. 100939






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ratingratingratingratingrating by: James Briscoe09/10/2013


Quick delivery an an easy install, Love the product Thank you very much! Had the lights installed in ten min. 99272






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ratingratingratingratingrating by: Charles Sherwood04/16/2014


Well made product. No parts missing. Simple to install. Instructions were clear. LEDs are VERY bright 125378






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ratingratingratingratingrating by: Dr. John09/26/2014


Economical and good quality replacement lighting kit. Recommended for appropriately sized trailer. 153262






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ratingratingratingratingrating by: BRYAN09/10/2013


excellent comunication and time on delivery. arrived just as expected and in nice packaging. 99255






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ratingratingratingratingrating by: Phil08/29/2011


Nice upgrade to original equipment. Mounting hardware is much sturdier than original equipment. 23094






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ratingratingratingratingrating by: John Mc01/10/2012


Great Product, easy to install, and very good lights. Looking forward to not changing bulbs! 29472






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ratingratingratingratingrating by: John M.02/01/2012


Nice Trailer lights install easily and shine fine. Looking forward to not changing bulbs. 30818






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ratingratingratingratingrating by: Dave B06/24/2014


The only one I found with ss bolts. Use in salt water & other ones last about one year. 137359




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Ask the Experts about this Optronics Trailer Lights
Expert Answers about Submersible, Under 80" LED Trailer Light Kit with 25' Wiring Harness - TLL9RKDo you have a question about this Trailer Lights?


  • 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 # BT66. Or you could use a combination of liquid electrical tape, # SWC50122, and regular electrical tape. Ideally,...
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  • 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...

  • 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...

  • 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.
    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...

  • 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...

  • 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.
    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...

  • Need Trailer Wiring to Use on 2008 Toyota Corolla and Fold-Up Trailer Kit
  • We have a custom fit vehicle wiring for your vehicle. I used the Fit Guide on the website and found that the wiring kit you need for your 2008 Toyota Corolla is the Curt Custom Fit Vehicle Wiring, part # 55542. This kit will wire into the vehicle wiring and allow you to connect your trailer to your 2009 Toyota Corolla. Yes, this custom fit wiring simply plugs into your factory wiring harness, it is a plug and play kit. When connecting the trailer wiring to your vehicle it is always...
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  • Wiring Harness Included with # TLL9RK LED Submersible Light Kit
  • There is indeed a wishbone harness included with the # TLL9RK Light Kit. The running light circuit is split into two separate circuits, one for each side of the trailer. I just got done installing this exact kit on my PWC trailer about a month ago. It was easy to install and I really like the brightness and reliability provided by LED lamps.
    view full answer...

  • What are the Dimensions of the Optronics Trailer Lights # TLL9RK
  • I went and pulled an Optronics Trailer Light Kit # TLL9RK from our warehouse to measure the dimensions for you. Check out the video to see the measurements. The horizontal width of one of the lights is 5 inches, the vertical height of the unit is 4-1/2 inches and the depth of it is 2-1/2 inches. The distance between the mounting studs is 2 inches also.
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  • 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...

  • 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...

  • 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...

  • 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...
    view full answer...

  • 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...
    view full answer...

  • Replacement Right Hand Side Taillight For Optronics Trailer Lights Part TLL9RK
  • The Optronics Trailer Light, # STL8RB, is a universal right side light for the # TLL-9RK set. They have the same dimensions, functions, amperage draw, and diodes. So this light will work.
    view full answer...

  • Sealed LED Tail Lights on Trailer Do Not Illuminate But Incandescent Type Will Work
  • The Optronics Submersible LED Trailer Light Kit, part # TLL9RK, provides a lifetime warranty on the the LEDs and features water-proof housings. This particular product uses two threaded stainless steel studs for mounting to your trailer and a 3-wire configuration for electrical connection to your trailer wiring. The light includes separate wires for ground (white wire), stop/turn signals (green and yellow wires) and running lights (carried on the brown wire). There are similar products...
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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.
    view full answer...

  • LED Trailer Lights All Light Up and Blink from Side to Side with Turn Signals On
  • There are several things that could cause your trailer light to behave like this. The most likely causes are a bad or weak ground connections or a dirty/corroded trailer connector. Make sure that both the truck and trailer side connectors are clean and free of corrosion. Then make sure the main trailer connector ground and the grounds for all of the lights are connected to clean and corrosion free bare metal surfaces. If the trailer has an aluminum frame, tilt bed, or folding tongue...
    view full answer...

  • What is the Spacing of the Mounting Studs on Optronics Trailer Light Kit, # TLL-9RK
  • The spacing on the mounting studs on the lights in the Waterproof, Under 80 inch LED Trailer Light Kit with 25 foot Wiring Harness, # TLL9RK, are 2 inches, center to center.
    view full answer...

  • Is an Over 80 or Under 80 Trailer Light Kit Needed for a Tow Dolly
  • The 80 inches in question is the overall width of the trailer, or in this case, a tow dolly. Even if a trailer or tow dolly is under 80 inches, you can still use an over 80 inch light kit if you wanted to. But a trailer that is over 80 inches cannot use an under 80 kit because it will not meet the requirements. For over 80 inches you can use # TLL36RK or # TLL16RK.
    view full answer...

  • What Are the Overall Dimensions of the Optronics Under 80-Inch LED Trailer Light Kit # TLL9RK
  • The Optronics stud-mounted LED Trailer Light Kit, part # TLL9RK, features left- and right-hand LED light assemblies that are DOT-approved and waterproof, and includes a 25-foot wiring harness, mounting hardware and connectors, and a license plate bracket. The driver-side light includes license plate illumination. These lights mount using two supplied steel studs (on 2-inch centers) and they use a 3-wire system for electrical connection to your trailer wiring. Each light has a white ground...
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  • Troubleshooting Trailer Taillights that Dont Blink When Running Lights are On
  • What it sounds like is going on is that you have the wires from your trailer run backwards to the two illumination circuits of your trailer. This would explain why when the running lights are on the blinkers and stop lights aren't functioning. Since the harness of the lights has three wires you will need to make sure you are using all three of the wires. The running lights of your trailer should run to the wire on the lights that activates the lower intensity and the stop/turn circuit...
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  • What is the Difference Between Trailer Lights # STL9RB and # TLL9RK
  • The difference between the LED Left Hand Trailer Light, # STL9RB, and the Trailer Light Kit, # TLL9RK, is the fact that one is an individual light and the other is the light set with license plate bracket. Part # STL9RB is the left hand stud mounted LED tail light. Part # TLL9RK is a packaged kit which includes 2 LED stud-mount tail lights, # STL8RB and # STL9RB, and a corrosion proof license plate bracket.
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  • Using Optronics # TLL9RK Trailer Light Kit on Trailer Towed by 2005 Toyota Tacoma
  • The # TLL9RK kit you mentioned is designed to be used to replace rear stop/turn/ taillights and the wiring on a small trailer. The kit features a 4-pole flat trailer connector designed for use with a 4-pole connector installed on a vehicle. If your Tacoma has a factory installed 4-pole connector, it should be converted already. If not, the Curt # C55513 trailer wiring harness would be a plug and play option that would plug inline with the factory connections behind the drivers and passenger...
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  • Will the Submersible, Under 80 Inch LED Trailer Light Kit Work with a 2004 Jeep Grand Cherokee
  • This sounds like a ground problem on the trailer and not the vehicle. A weak or bad ground connection can cause all sorts of strange problems and what you are describing is actually common with any lights if there is a ground issue. The light kit # TLL9RK will work fine with your Jeep. Make sure that ground wires for the lights are attached to clean and corrosion free bare metal surfaces. Do the same with the main trailer connector ground. If you have a tilt trailer, folding tongue,...
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  • How Long are the Cables and Wiring for the Roadmaster Deluxe Tow Light Kit
  • I spoke with my contact at Roadmaster. he indicated that the cables on the Deluxe Magnetic Tow Light Kit, # RM-2100, are 25 feet long. What you can do to get an additional 8 feet with this kit is to use the Hopkins Heavy-Duty Trailer Coiled Extension, # HM47045. However, this kit is not submersible so you would have to remove them from the boat before backing it into the water to launch. You could use a submersible kit, like # TLL9RK. Since you would need an extension either way, you...
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  • Are the mounting screws stainless steel on the LED Trailer Light Kit, part # TLL9RK?
  • Yes, the mounting hardware included with the Waterproof, Under 80 inch LED Trailer Light Kit with 25 foot Wiring Harness, part # TLL9RK, is stainless steel and corrosion-resistant.
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  • Newly Installed Trailer Light Kit Not Working Behind a 1998 Ford F-150
  • Which grounds did you check? There are at least 4 ground connections that you need to make sure are working. One at each of the lights, the ground wire that goes from the trailer frame to the trailer connector, and the ground that goes from the vehicle frame or body to the vehicle connector. Any of these grounds could be the culprit. Remember, paint and rust can insulate these ground connections so make sure the eye terminals have direct metal contact. If everything else is wired properly...
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Expert Answers about Submersible, Under 80" LED Trailer Light Kit with 25' Wiring Harness - TLL9RKDo you have a question about this Trailer Lights?



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