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

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

Item # TL5RK
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Optronics Trailer Lights - TL5RK
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Trailer kit with 2 stud-mount, submersible tail lights; corrosion-resistant license-plate bracket; 2 amber side marker and clearance lights; 25' wiring harness with 4-pole connector; mounting hardware Lowest Prices for the best trailer lights from Optronics. Submersible, Under 80" Trailer Light Kit with 25' Wiring Harness part number TL5RK can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Reviews (226)
  • Q & A (74)
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Optronics Trailer Lights - TL5RK

  • Tail Lights
  • Square
  • Kit
  • Incandescent Light
  • Red and Amber
  • Surface Mount
  • 5L x 4-1/2W Inch
  • Optronics
  • Submersible Lights
  • Stop/Turn/Tail
  • Side Marker
  • Side Reflector
  • Rear Reflector
  • License Plate

Trailer kit with 2 stud-mount, submersible tail lights; corrosion-resistant license-plate bracket; 2 amber side marker and clearance lights; 25' wiring harness with 4-pole connector; mounting hardware


Features:

  • Red, submersible, trailer light kit with stud mount lights, license bracket, amber clearance lights, wiring harness, mounting hardware
    • 2 Red, stud-mount, submersible tail lights (ST6RB and ST7RB)
      • Driver's-side light includes license illuminator
    • Corrosion-resistant license-plate bracket
    • 2 Amber, stud mount, square side marker and clearance lights (MC36AB)
      • Self-grounding through mounting stud
      • Lights include reflectorized lenses, eliminating the need for separate reflectors to meet DOT requirements
    • 25' Wiring harness with 4-pole connector
    • Mounting hardware included
    • DOT approved
  • Limited 3-year warranty - excludes bulbs

Note: Lights included in this kit pull 2.5 amps for stop/turn function and 1 amp for tail signal. Please check the amperage capacity of your vehicle wiring harness to ensure this light kit will not overload your wiring harness.


  • Packaged kit includes 2 submersible, stud-mount tail lights, 2 amber side markers and a corrosion-proof license-plate bracket
  • Contents: (1) ST6RB, (1) ST7RB, (2) MC36AB and (1) license-plate bracket
  • Equipped with a 25' wire harness and mounting hardware


TL5RK Optronics Submersible, Under 80" Trailer Light Kit with 25' Wiring Harness, Stud Mount

Alternate part number: TL-5RK




California residents: click here


Video of Submersible, Under 80" 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 - Tail Lights - TL5RK Review

Today, we are reviewing part number TL5RK from Optronics. This is a submersible trailer light kit for under-80-inch wide trailers. You get two taillights, the 25-foot wiring harness with the four-pole plug. You get two side marker lights, a heavy-duty plastic, corrosion-proof license plate bracket, and all the hardware you need for installation. This is the passenger side light. As you can see on the back, you have two studs. These lights on both sides mount and ground through the studs.

Your brown wire on the passenger side is your taillight, and the green wire your stop-and-turn signal. On the drivers side, the brown wire is for the taillight, and the yellow wire is stop-and-turn. You have two side marker lights. These have reflectorized lenses so you do not need to get any other reflectors. You see there is one stud on the back of each. They ground through the stud and they each have one power wire.

The license plate bracket mounts to the drivers side, onto the studs, just like that. Take that off for now. Now, I think we can turn our lights off and I will show you how these work. That is your taillight, front and side. Bottom, you have your license plate illuminator. Here is your brake light and here is your turn signal.

Now, I think we can turn our lights back up. These are Department of Transportation approved. Except for the bulbs, you have a limited three-year warranty on all the parts. There you have it for part number TL5RK from Optronics, the submersible trailer light kit for trailers that are under 80 inches wide.


Customer Reviews

Submersible, Under 80" Trailer Light Kit with 25' Wiring Harness - TL5RK

Average Customer Rating:  4.7 out of 5 stars   (226 Customer Reviews)

Trailer kit with 2 stud-mount, submersible tail lights; corrosion-resistant license-plate bracket; 2 amber side marker and clearance lights; 25' wiring harness with 4-pole connector; mounting hardware

- TL5RK
by:

I love the Item I purchased, very easy to install and got it a very good price. Two years or so ago I bought a front mount trailer hitchfrom E-trailer and got the best price and free shipping which was incrdible. I will always buy my trailer/hitch needs from etrailer.com. In fact I'm a retired NYC correction officer and attend union meetings as a retiree and will at the next meeting recommend etrailer.com to everyone there.. thanks for being a reliable company with the best prices on the net or anywhere else for that matter.. Nick Costantini 35437



- TL5RK
by:

While there was more here than I needed (the trailer was already wired, it just had broken lights), getting this package was the cheapest and best way to get what I needed...exact, drop in replacements. Shipping was quick...your service is outstanding. That is why I will be getting another package today (which I ordered the day after I ordered the lights), and is the reason I keep going back to etrailer.com. Great prices, great service and if you ever have to talk with anyone they are the nicest people in the world. Thanks! 80337



- TL5RK
by:

The lighting system performed well in traveling from NY to northern Michigan and return to carry an old boat back for restoration. 435552



- TL5RK
by:

Product is great works awesome. Took me just a little while to research that GROUNDING is the key to making everything work :) But, figured it out and better for the knowledge I gained. Would be helpful if you included with this product a good overview of grounding for people to make sure they understand the relationship of all light fixtures making contact with frame of trailer :) Very happy with purchase :) 214739



- TL5RK
by:

Exactly what was described, nice price, works properly. I opted to solder wiring and use shrink wrap instead of splicing supplies it came with. 642214



- TL5RK
by:

Exceptional quality for the price! I made the mistake of purchasing a kit at one third the price if this one, (I literally got what I paid for)! But no worries, as this kit was a vast improvement over the cheapy Chinese trailer light kit. I would have given it a five star, however the plugs finish quality were less than they should have been, (mold flashing, and an odd shape) they should check to make sure that the plugs are GM, Ford and Chrysler compatible. I went to the auto parts store, (NAPA) and purchased a Ford compatible male/female plugs to splice into the wire harness, versus the plugs that came with the harness provided. 303027



- TL5RK
by:

I was very pleased with the product. I will be using your company in the future for my trailer repair needs. 803057



- TL5RK
by:

Everything easy install, perfect match. Light fixtures and wiring. Year later still great. 798847



- TL5RK
by:

Excellent lights for the price, a really great upgrade to the family boat!! Thank you!! 794015



- TL5RK
by:

Kit came with all the necessary pieces and worked great. Quick and easy lights and wiring solution for a great price. 793829



- TL5RK
by:

Thank you, the wiring harness arrived and it is installed as we speak, thanks for your great Service 789694



- TL5RK
by:

Easy install, expediently arrived free from defect. 786062



- TL5RK
by:

Great product so far. Shipment came in on time and good shape. 785738



- TL5RK
by:

Better quality and price than I could find locally. 775421



- TL5RK
by:

Needed an upgrade and this was perfect. 773536



- TL5RK
by:

Just what I needed. Fit great. Fast shi pping. 771257



- TL5RK
by:

Great product and great price... very easy to install!!! 745434



- TL5RK
by:

Product was Great. Service was even better. Thanks jeff l 739480



- TL5RK
by:

I definitely recommend this website for anyone who needs great pricing, fast delivery and quality products, plus I was able to watch videos and review great photos for all items I was purchasing. i will be using the website for all of my future trailer needs 734872



- TL5RK
by:

Came with everything that I needed for a good price 728624



- TL5RK
by:

EXcellant communications and service , if you need trailer parts this is the place to go !! 725274



- TL5RK
by:

New and exact replacement for the old ones I had. Just needed one light, but since I have the whole kit, I'm replacing everything new. Fast shipping and product is of good quality. 713383



- TL5RK
by:

Easy install Same bolt up hardware as the prior light set We had the trailer back on the road the day I received the new light set. 707284



- TL5RK
by:

Great service. Great product, exactly what wanted. 705187



- TL5RK
by:

The Submersible, Under 80" Trailer Light Kit with 25' Wiring Harness kit that I purchased worked well for my application. I had an old, broken set of lights on my trailer. I found this kit from Optronics on etrailer and after reviewing the pictures, diagrams and information listed on your website, I knew this would be a great replacement for the OEM lights that came on the trailer. I received the kit in the time listed for my shipping selection and once I got the kit, I was able to install all of the lights and wires with ease. This is a great kit from Optronics and had all of the components I needed to make sure anyone behind me knows when I am stopping and turning. Thank you employees of etrailer for helping me get the product that I needed. 700213


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Ask the Experts about this Optronics Trailer Lights

  • Square Trailer Tail Lights Compatibility with Metal Light Guard for 440 Style Lights
    The Optronics Submersible, Under 80" Trailer Light Kit with 25' Wiring Harness # TL5RK will work seamlessly with the Light Guard - Unpainted Steel for 440 Tail Light # LG440NP you referenced. This guard is specifically made for these style lights so the dimensions will fit them just like the pictures on the product page. I've also attached a photo of the similar LED lights # TLL9RK in the same size for reference.
    view full answer...
  • How to the Lights in Trailer Light Kit TL5RK Ground to the Trailer
    The lights included with light kit # TL5RK ground through the mounting studs. The light grounds should also be attached to clean and corrosion free bare metal surfaces. If there is anything between a light ground and the metal trailer frame or if the trailer has an aluminum frame, tilt bed, or folding tongue, any of these things can interrupt the ground. Running jumper wires from the light grounds to the main trailer connector ground can help. It does sound like a weak ground connection....
    view full answer...
  • Replacement Bulbs for the Submersible, Under 80" Trailer Light Kit with 25' Wiring Harness TL5RK
    I spoke with Optronics about the Submersible, Under 80" Trailer Light Kit part # TL5RK and they informed me the tail lights use 1157 bulbs part # A1157B and the side marker lights use 194 bulbs part # A194B.
    view full answer...
  • Connecting Trailer Side Marker Lights to Trailer Wiring Harness
    The marker lights would tie into the running light circuit, which is carried by the brown wire on the trailer wiring harness. I've linked you to a trailer wiring diagram, and also to our trailer wiring FAQ article.
    view full answer...
  • Troubleshooting Boat Trailer Lights That Don't Work When Vehicle Headlights Are Turned On
    It sounds like what you're describing could be an issue with the ground wire on the trailer-either a short or an insufficient connection. This is a common cause of lights working initially but then malfunctioning when another load is added to the mix. I would start with checking the ground wire on the trailer to make sure that it is firmly connected to a paint and corrosion free spot on the trailer; it would also be worth checking the ground wire on your vehicle's wiring harness at this...
    view full answer...
  • Troubleshooting New Trailer Wiring Where Running Light Circuits arent Active
    Either the lights don't have power like they should or it's a ground problem. Most likely it's ground related though as that's what causes most trailer wiring issues. What I would do is try grounding the assemblies to the frame of the trailer and then also keep the ground wire that runs to the main harness you have as well. Between those two ground circuits you should get the lights to work. You can also use a circuit tester like part # PTW2993 to check to make sure there is power ran to...
    view full answer...
  • What is the Wire Gauge on the 4-Way Wiring Harness for Optronics Trailer Light Kit # TL5RK
    I measured the wire gauge on the Optronics light kit # TL5RK and the wires are 18 gauge. This is measured on just the copper strands with the insulation stripped off.
    view full answer...
  • Need Tail Light Mounting Brackets for Tail Lights Included in Trailer Light Kit # TL5RK
    The Optronics Trailer Light Kit # TL5RK that you referenced does not include mounting brackets for the two tail light assemblies since these lights use their mounting studs to mount and provide the ground connection. You can use a bracket to mount the tail lights but you will want to be sure that there is a solid metal-to-metal connection between the bracket you use and the trailer frame to enable a good ground. The spacing of the two mounting studs on these Optronics lights is 2-inches...
    view full answer...
  • Distance Between Tail Light Mounting Studs in Trailer Tail Light Kit # TL5RK
    The mounting studs on the lights included with trailer tail light kit # TL5RK are 2 inches apart on center. I have linked a video showing an example installation of this kit for you.
    view full answer...
  • Available Complete Trailer Light Kits
    We offer all sorts of both incandescent and LED trailer light kits and parts but none of these is intended to work directly with a vehicle's OEM light wiring or bulb fixtures. You'd need OEM light fixtures (that accept your wiring and bulbs) and a way to mount them on your new wood deck in order to keep your existing wiring in place. I'm afraid we don't offer OEM vehicle parts like that. What might be a better option for you is to select a complete trailer lighting kit like those shown...
    view full answer...
  • Submersible Trailer Wiring Kit Recommendation for Redoing Lighting on a Boat Trailer
    A very popular trailer lighting kit we offer for boat trailer is the Optronics kit part # TL5RK which comes with two taillights and clearance lights that are submersible. The lens allows water to pass in and out of it but the actual light assemblies inside of it are sealed. It also comes with a license plate bracket and new wiring. The lights included are incandescent. If instead you wanted an LED solution the part # TLL36RK would be what you would want. LEDs are brighter, last much...
    view full answer...
  • Taillight Recommendation for a Flatbed Truck Built on a Chevy Silverado
    I think the part # STL68RB would be perfect for your flatbed truck (looks good by the way). The dimensions of the this oval light are 10 inches long and 3 inches tall. They do stop/turn/tail/reverse light functions as well so you would be totally set. I attached a review video for this light for you to check out as well. You might also be interested in the stainless steel trim piece part # A68SSB.
    view full answer...
  • What Does 80 Inch Trailer Mean On Optronics Submersible, Under 80 Inches Trailer Light Kit # TL5RK
    The 80 inches means the width of the trailer. Trailers that are over 80 inches wide are required to have two side marker lights, one on each side. The Optronics Submersible, Under 80 Inches Trailer Light Kit with 25 Foot Wiring Harness, part # TL5RK, is designed for trailers under 80 inches wide. The 25 foot length of wire that comes in the kit should work fine with your 20 foot long boat trailer. If you are needing a longer 4-way wiring harness I have the Optronics 35 ft. Wishbone...
    view full answer...
  • Parts Needed to Replace Trailer Wiring and Lighting on a 1997 Coleman Sea Pine
    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...
  • Trailer Lights Not Lighting Up Properly on Harbor Freight Trailer
    It sounds like the wiring harness you have is what is called a wishbone harness. These will have 2 wires that connect to the single running light pin so you don't have to run a jumper wire from one side of the trailer to the other. It also sounds like you have everything hooked up correctly. Yellow is usually left turn and brake lights, green is usually right turn and brake lights, brown is usually running lights, and white is the ground. You can test this by connecting the trailer...
    view full answer...
  • Recommended Wiring And Trailer Light Kit For Harbor Freight Trailer
    Since you said you want to re-wire your entire trailer I recommend the Optronics Submersible Trailer Light Kit, part # TL5RK. This kit comes with 2 stud-mount lights, 2 amber side marker and clearance lights, a license plate bracket, and a 25 ft wiring harness with a 4-way connector. The mounting hardware is also included with this kit. I have also attached a link to an installation video for this wiring kit you can check out.
    view full answer...
  • Recommended Trailer Lighting for Kayak Trailer with Additional Post Style Lights
    The Easy-Hitch Light-Up, Telescoping Hitch Aligner # JE00600 is a great option for aligning hitches and giving you a visual guide, but you cannot use them while driving. The magnets are simply not strong enough for travel and could become a road hazard. For the post style lighting you desire, I recommend the CE Smith Post-Style Guide-Ons with LED Lights for Boat Trailers # CE27740. For your trailer wiring, you can use the Submersible Light Kit # TL5RK or the LED Kit # TLL9RK. Either...
    view full answer...
  • Trailer Turn Signals and Brake Lights Not Fully Functional Connected to 2004 Chevy Silverado
    Since the trailer lights work fine on a different vehicle, the likely issue is on the truck. Most likely there is a dirty or corroded trailer connector causing the issue but I would still not rule out a ground problem on the trailer. On the vehicle, start by making sure the connector is clean and free of corrosion. Also check where the wires attach in the back if it is a 4 and 7-Way or if using an adapter. If you are using an adapter it could be at fault as well. After cleaning up...
    view full answer...
  • All Trailer Lights Blink When Truck Headlights and Turn Signals are Turned On
    The wiring harness on the trailer side is what is called a wishbone harness. It splits the running light signal so that you do not have to run a jumper wire from one side to the other. The yellow/brown wire is for the left side running lights and the green/brown is for the right side running lights. That could be what the problem is if you wired it differently. Make sure that the trailer lights are grounded to a clean and corrosion free location of the trailer frame. Also check to make...
    view full answer...
  • Wiring Harness Diagram and Installation Instructions
    Your wiring should be pretty straight forward. The provided video link will walk you right through the installation. One of your lights will have a clear plastic lens on the bottom which will be used with the license plate bracket on the left side (drivers side) of the trailer. This will be hooked up with the wiring, including the yellow and brown wire. On the right side, you will use the green and brown wires to install that light. Your side marker lights will be hooked up with the brown...
    view full answer...
  • Trailer Right Turn Signal Not Working When Connected to a 2000 Ford Ranger
    If your 2000 Ford Ranger has the factory trailer connector then there is a fuse for the trailer right turn and brake light located in the in cab fuse panel in location 7. But if this fuse is blown then the right brake light on the trailer also would not work. If you have an aftermarket wiring harness such as # 118344 then it ties into the tail light wiring on your Ranger. Otherwise you would have to follow the wiring as far forward as you can and fix any broken or pinched wires. I...
    view full answer...
  • Instructions for Wiring Additional License Plate Light With Submersible Trailer Light Kit # TL5RK
    When it comes to adding an additional license plate light to the Submersible, Under 80" Trailer Light Kit with 25' Wiring Harness, # TL5RK, I recommend taking a look at the LED Mini Trailer License Plate Light, # LPL31CB. The light has a weathertight seal to protect it against the elements and the two-wire design includes the lead and ground wires to mount to any surface. In order to wire this light, one of the wires will need to connected/spliced into the running light circuit (brown...
    view full answer...
  • Recommendation For LED Camper and Flatbed Tail Lights for a 2010 Ford Ranger
    I would recommend the Sealed, 6-1/2 inch Oval LED Trailer Stop, Turn and Tail Light, 10 Super Diode, item # STL72RB, for both the truck bed and the trailer. To mount these lights you will need a Trailer Light Mounting Bracket for 6-1/2 inch Oval Trailer Lights, item # BK70BB, and a Rubber Grommet, item # A70GB. To wire the lights you will need either the straight Pigtail, item # A45PB, or a the right angle Pigtail, item # A47PB. I have used these lights on a car hauler and they work excellent...
    view full answer...
  • Running Lights Not Working on Trailer After Installation of Optronics Trailer Light Kit # TL5RK
    There are many possible reasons why the running lights are not working on your trailer when using the Optronics Trailer Light Kit, part # TL5RK. First, I recommend checking the ground connections. The trailer lights on this kit will ground through the mounting studs. They will need to be attached to a clean and corrosion free bare metal surface. You will also want to make sure that the main ground from the trailer connector is attached to a clean and corrosion free bare metal surface....
    view full answer...
  • Trailer Right Side Running Light Does Not Work
    This sounds like a potential ground problem. Ground problems normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or brake light. Make sure that the vehicle side and trailer side connectors are clean and free of corrosion inside and out. The main connector grounds should be attached to clean and corrosion free bare metal surfaces. The light grounds should also be attached to clean and corrosion...
    view full answer...
  • Brake Lights Turn Off when I Step On the Brakes After Wiring New Trailer Lights
    Yes, it seems like you have a ground problem on the trailer. I would start by checking the ground wire at the trailer coupler and making sure it is connected to a solid clean paint free spot on the coupler of frame. Then I would check the tail light assemblies. Tail lights are usually grounded through their connection to the trailer frame. If you have a plastic license plate bracket on the left side this could be the culprit. You should also check the brackets that hold the lights....
    view full answer...
  • Newly Installed Trailer Tail Lights Work but Are Very Dim
    Dim trailer lights can be a symptom of a bad ground or wiring harness connection. Make sure that the vehicle side and trailer side connectors are clean and free of corrosion inside and out. The main connector grounds should be attached to clean and corrosion free bare metal surfaces. The light grounds should also be attached to clean and corrosion free bare metal surfaces. If there is anything between a light ground and the metal trailer frame or if the trailer has an aluminum frame,...
    view full answer...
  • Trailer Right Rear Tail Light Only Works Sometimes
    I believe that you are experiencing a ground problem, which can cause all sorts of weirdness. There are a couple of usual suspects that you can investigate to get to the source of the problem. First, make sure that the main trailer connector ground is attached to a clean and corrosion free bare metal surface. Next you will do the same for each of the trailer lights. The lights with tail light kit # TL5RK ground through the mounting studs. Make sure those are also attached to clean metal...
    view full answer...
  • Wire Gauge of 25 Foot Harness Included with Submersible, Under 80 Inch Tail Light Kit
    Optronics uses small 20 gauge wiring for their 4-Way wiring harnesses so it would be even smaller than 18. In order to get 14 gauge wires I recommend # DW04923-1 which is sold by the foot. Each of the wires in it are 14 gauge. Then you would just need the lights, # ST6RB and # ST7RB, 2 of # MC36AB, and license plate bracket # LP10SB. And for the additional clips, connectors, ties and other parts I recommend the wiring kit # HM51020.
    view full answer...
  • Is Submersible, Under 80" Trailer Light Kit # TL5RK Sealed from Water
    While the wires and portions of the internals of the Submersible, Under 80" Trailer Light Kit # TL5RK are exposed to water when the ligth is submerged all of the important parts of the light and circuits are sealed so nothing gets damaged. So the water will fill in the assembly but then drain out without damage.
    view full answer...




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Info for this part was:

Expert Research:
Mike L
Expert Research:
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Expert Research:
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Jameson C
Expert Research:
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Adam R
Expert Research:
Jeffrey L
Written by:
Tyler C
Video Edited:
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Installed by:
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Installed by:
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Updated by:
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