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Optronics Trailer Light Kit for Trailers over 80" Wide - Submersible - 25' Wiring Harness

Optronics Trailer Light Kit for Trailers over 80" Wide - Submersible - 25' Wiring Harness

Item # TL16RK
Our Price: $45.90
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Shipping Weight: 3 lbs
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This incandescent trailer light kit comes with everything needed to properly light your trailer. 2 Tail lights, 2 amber clearance lights, 2 amber reflectors, license plate bracket, 25' wiring harness with 4-pole connector, and mounting hardware. Great Prices for the best trailer lights from Optronics. Optronics Trailer Light Kit for Trailers over 80" Wide - Submersible - 25' Wiring Harness part number TL16RK can be ordered online at or call 1-800-940-8924 for expert service.
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Optronics Trailer Lights - TL16RK

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

This incandescent trailer light kit comes with everything needed to properly light your trailer. 2 Tail lights, 2 amber clearance lights, 2 amber reflectors, license plate bracket, 25' wiring harness with 4-pole connector, and mounting hardware.


  • Incandescent trailer light kit comes with everything needed to properly light a trailer over 80" wide
    • Includes 2 tail lights, 2 amber clearance lights, 2 reflectors, license plate bracket, 25' wiring harness with 4-pole connector, and mounting hardware
  • Sonically sealed, waterproof tail lights and clearance lights are submersible
  • 2 Low-profile combination tail lights (ST16RB and ST17RB)
    • Provide stop, turn, tail, rear clearance, rear reflex, side marker, and side reflex functions
    • Driver's-side light includes license illuminator
  • 2 Amber clearance lights (MC91AB)
    • Self-grounding chrome bases
    • Gaskets for weathertight seal
  • 2 Amber reflectors (RE11AB) meet FMVSS "A" for reflex when properly applied
  • Durable polycarbonate housing on all lights
  • Compatible with 12V DC systems
  • Simple installation with included mounting bracket (LP5SB) and stainless steel mounting hardware
    • Tail lights stud mount to trailer
    • Clearance lights surface mount to trailer
    • Reflectors screw-mount to trailer or attach with adhesive backing
  • 25' Wiring harness with 4-pole connector
  • DOT approved
  • PC rated


  • Application: trailers over 80" wide
  • Tail light dimensions: 8-1/16" long x 2-7/8" tall x 2-13/16" deep
    • Distance between mounting holes (center on center): 2"
  • Clearance light dimensions: 2-7/8" long x 1-1/2" wide x 1" thick
  • Reflector dimensions: 4-7/16" long x 1-15/16" wide
    • Distance between mounting holes (center on center): 3-15/16"
  • Power draw at 12V:
    • Tail lights:
      • Stop/turn: 2.3 amps
      • Tail: 0.9 amps
    • Clearance lights: 0.2 amps
  • Limited 3-year warranty

Note: Over 80" Federal Regulations require additional clearance lights (like MC94RB, sold separately)

Optronics TL16RK Waterproof Combination Tail Light Kit Dimensions

Sonically Sealed, Waterproof Trailer Light

The waterproof construction of this light makes it ideal for use on trailers that may be submerged, like a boat trailer. The housing and lens are sonically sealed together to create a single unit, which means that water will not get into the light and damage the diodes or circuit board.

Combination Lights for Trailers Over 80" Wide

Flatbed trailer over 80" wide with combination tail lights

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

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

Surface-Mount Light

Surface Mount Trailer Light Installation Diagram

Surface-mount trailer lights install using a flange or bracket with mounting holes. These lights lay flat against the trailer surface and only require a small, often pre-existing hole, for wiring. Mounting hardware is used to secure the light to the trailer.

PC-Rated Lights

Diagram of light spread for PC rated light

A PC-rated light produces a 90-degree angle of light to either side of its centerline for a total of 180 degrees of coverage. This beam pattern can be clearly seen when you are standing directly in front of the light, as well as when you are standing on either side of the light. When properly installed, this type of light can function as both a front clearance light and a side marker light or as a rear clearance light and side marker light.

TL16RK Optronics Marine Trailer Light Kit for Trailers over 80" Wide - Waterproof - Incandescent - 25' Wiring Harness

Alternate part number: TL-16RK

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Optronics Trailer Light Kit for Trailers over 80" Wide - Submersible - 25' Wiring Harness - TL16RK

Average Customer Rating:  4.7 out of 5 stars   (94 Customer Reviews)

This incandescent trailer light kit comes with everything needed to properly light your trailer. 2 Tail lights, 2 amber clearance lights, 2 amber reflectors, license plate bracket, 25' wiring harness with 4-pole connector, and mounting hardware.


Working well. We did not use the license plate hanger because it didn't have a light on it. Ended up ordering another one with a light.



They are still working well.


Work great. Bright, and water resistant. !! No issues so far! Look great also!


Very good. Shipping not good.


As described


Easy to wire, easy to install, and so far no issues. Only thing I wish this came with was some wire connectors with shrink tubing. Other than that, works as needed


I was pleased to get the order so quickly, but the parts bag was split open and half of the parts were missing. Because the outer box had a hole in it. I would appreciate another parts bag, because I don't know what parts are missing.


One stop shop for a light overhaul, had to buy 2 smaller side lights to have the full set of lights needed to re-run all the lights and wires for my boat trailer, but this kit gave me 90% of what I needed.

I did have water get into one of the boxes, but a little epoxy around the wires where they enter the box, and problem solved. Best use of a day during my vacation was re-running all of the lights. No more lighting issues every time I put the boat in.


Ordering this light kit was the first time I've used
What a pleasant experience. Ordering was a breeze and the follow-up customer service was first class.
Whenever I need trailer parts, it'll be for me. I will recommend this web site to anyone I know.
I like to shop around online to find the best deal. I went to a competitor's web site that read "low price match guaranty". So I called them on the phone. Their rep said, "We can"t price match". It was the exact same item. 25% lower price at eTrailer.
Fast shipping, excellent packaging.
And BTW, the lights worked out great.


I received the product in a timely manner. The problems started with installation. I was replacing an existing, non-functioning light set and the wiring appeared to be identical. I made some temporary connections and the red rear lights seemed to work with all functions. However, after hard-wiring and installing all of the lights they failed to work. The package included a bar code to access some installation videos. Unfortunately, these videos did not address the specific product I had, so they were of no use. After hours of experimenting I called for support. Support was friendly and had a technician call me back. After a couple of minutes of chatting, he informed me that this kit would not work with aluminum trailers and that I would need to install a separate, dedicated grounding connecting from all devices. Would have been nice to know that in advance, and perhaps there should be products and packages specifically for aluminum trailers.


Very easy installation! Had an issue with the running lights NOT working after installation. I emailed the team at and they helped me TROUBLESHOOT the problem. It was my vehicle. They went ABOVE and BEYOND to help me find the problem when the light kit installed perfectly the 1st time! Only took about 2.5 hours but that's because I was meticulous about all of the connections and sealing them in heat-shrink tubing for extra protection.


I recently purchased a used boat trailer that required lights, wiring and markers to be replaced. I called customer service at with a list of questions. The representative was very patient and extremely helpful in guiding me to the product she believed met my needs. The new light package was on my doorstep in 3 days. The lights were exactly what I needed, easy to install, and work perfectly. will be my first choice for any accessory needed to repair or improve my trailer.


It was so easy ordering my submersible trailer lights for my jet ski’s,thank you for the great price and fast service


This is a cheap kit (made in Tiawan) I wish they sold the same kit with better quality that wasn't LED .The parts that I removed from the trailer were of much higher original quality. I would not recommend this product to anyone. The only parts I used from the kit were the tail lights. and license plate bracket. I threw away the side parker lights and went out and bought good ones.


Everything I needed was in the kit with good instructions. Delivery was right on time, With sales follow up I don't know how you could ask for better service.

That's why E-Trailer is the only place I shop now.

Mike B.


Hi I am perfectly satisfied with everything I have gotten from e trailer. Will be back if and when the need arises.


Was exactly as described, works perfectly with my trailer. Would give it a "Excellent" rating if it had included more thorough instructions for attaching the side marker lights and how to waterproof those. Otherwise great!


very happy with purchase.


Purchased this product to rewire a 1980"s double-wide snowmobile trailer. These lights replaced the old ones perfectly, at a great price.


Wish there were more than six wire clips. Washers to backup lock washers would of been nice. All in all very happy with product.


Fast shipping, Product was just what was needed and as described. Tracking info was decent but overall no problem.


Really good value. Easy to hook up, lots of wiring. Very happy!


Note this is made in China and not great quality. Should work fine but may not last. You will need a 10mm socket or box for the tail lights.


There was no information as to the gauge of the wire or if a center brake light was supported. Good hardware, but more documentation would make it better.


Light kit was exactly as describe and easy to install, however as others have noted, the instructions are pretty useless. A little common sense takes care of that though. Good product for the price.


Easy installation. Harness, at 25', was just too short for my trailer, which is 22'.


Nice product. All high quality parts with all the hardware included. The customer service and communication made this transaction a step above what I've been accustomed to.

Show More Reviews

See what our Experts say about this Optronics Trailer Lights

  • Difference Between Trailer Taillight Kits that are for Over 80 inches in Width and Under 80 inches
    There are different taillight requirements for trailers that are over 80 inches in width vs. ones that aren't over 80 inches in width. If you check out the link I attached you will see all of these differenced highlighted. The over 80 inch kits like the part # TL16RK typically come with additional clearance lights when compared to the under 80 kits like the # TL5RK. I attached review videos for both kits for you to check out.
    view full answer...
  • How Do the Lights Mount in Trailer Tail Light Kit # TL16RK
    Trailer light kit # TL16RK mounts on the heads of the 4 bolts that came with the kit. There are slots on the backs of the lights and the lights will slide onto the bolt heads. There are actually 3 slots per light giving you some adjustability. The amber clearance lights mount through the included mounting brackets but you have to first pop the lights off to access the mounting holes. I have included a couple of pictures showing all of this for you.
    view full answer...
    Image 1 for Image 2 for
  • Does Waterproof Trailer Light Kit with 25 Foot Wiring Harness # TL16RK Come With a Wishbone Harness
    I went out to the warehouse and pulled a Waterproof, Over 80 Inch Trailer Light Kit with 25 Foot Wiring Harness, # TL16RK, to double check, and it does come with a wishbone harness. The trailer sided connector has a split running light signal that is run with each turn signal/brake light wire.
    view full answer...
  • What is Amperage Draw of Optronics Trailer Light Kit # TL16RK
    The gauge wire that comes with the Optronics trailer wiring kit # TL16RK is 20 gauge. For LED lights like this 20 gauge wire is adequate for the lower amperage draw.
    view full answer...
  • How Does Trailer Wiring with 5 Wires Run to Trailer Taillights that are 3 Function
    I attached a diagram that shows a standard trailer wiring diagram. For your 5 wire setup you'd have the white wire that goes to ground on the trailer frame, the two brown wires run to either side of the trailer for the running light circuit, the green runs to the right for the stop/turn and the yellow runs to the left stop/turn circuit.
    view full answer...
    Image 1 for
  • How to Wire Clearance Lights for the Optronics Trailer Light Kit for Trailers Over 80" Wide
    The 2 black wires for the side marker lights that come with the Optronics Trailer Light Kit # TL16RK are used to power the lights. The clearance lights are actually designed to ground using the mounting hardware. If you check out the attached picture you can see that there is a metal strip that runs from an eyelet to where you will use your mounting hardware. So you will simply connect the black wire to the hole that won't be touching that eyelet. This is also addressed in the attached...
    view full answer...
    Image 1 for
  • Lighting Requirements for Trailer that is over 80 inches in Width
    I attached a picture that shows what type of lighting requirements are needed for a trailer over 80 inches in width as well as a link down below that covers this as well.
    view full answer...
    Image 1 for
  • Tail Light Dimensions for Optronics 80 Inch + Trailer Light Kit TL16RK
    I got the diagram from the manufacturer. The external dimensions are length: 8-1/16 inches, height: 2-7/8 inches and depth: 2-13/16 inches.
    view full answer...
  • Replacement Light Kit Recommendation for a 1994 Ranger Boat Trailer
    If your boat trailer is under 80" wide I recommend the Submersible, Under 80" Trailer Light Kit with 25' Wiring Harness # TL5RK but if it is over 80" wide I recommend the Optronics Trailer Light Kit for Trailers Over 80" Wide # TL16RK instead. I'm not sure what all came on your 1994 Ranger boat trailer but these light kits are a good starting point. If there are additional reflectors or lights you're needing to replace please shoot me some photos of everything you need replaced and I'd...
    view full answer...
  • Can Trailer Lights for 80 Inch Wide Trailers Be Used on Trailers Under 80 Inches Wide
    Trailers that are over 80 inches wide require additional lighting above what is required for trailers under 80 inches in width, but the over 80 or under 80 size will have no bearing on the wiring connections. So yes, the Optronics Trailer Light Kit for Trailers over 80" Wide # TL16RK can certainly be used on trailers that are under 80 inches wide.
    view full answer...
  • Option to Upgrade to 7 Inch LED Wesbar Trailer Tail Lights
    Thanks for the photo, and you have the Wesbar incandescent trailer tail lights. You won't need the exact same dimensions to upgrade to LED tail lights, you simply need to have the same mounting dimensions, which for your lights should be 2" apart (on center). If so, what you can do is upgrade to the following: - Light Kit for Trailers Over 80" Wide # TL16RK
    view full answer...
    Image 1 for
  • Troubleshooting Installation of Optronics Trailer Tail Light Kit TL16RK
    The first thing you can check on your trailer tail light installation with Optronics kit # TL16RK is the ground wire, which is the white wire. A bad ground will prevent operation of all lights. This white wire from the 4-pole flat connector must be firmly attached to a clean bare metal surface on the trailer frame. You can try sanding off any paint or rust to get down to the bare metal. Make sure the white ground wire is very firmly secured to the trailer frame. You also need to ensure...
    view full answer...
  • Complete LED Lighting and Wiring Kit for a Trailer Over 80 Inches Wide
    Yes, we do have the complete kit with all the wires and lighting you will need to rewire and set your trailer up with new lights. We have two options depending on the amount of side marker lights you want. The first is the LED Combination Trailer Tail Lights - Submersible - Driver and Passenger Side - 25' Wire Harness item # TLL16RK and the Optronics Trailer Light Kit for Trailers over 80" Wide - Submersible - 25' Wiring Harness item # TL16RK. I have linked an installation video that will...
    view full answer...
  • Will The Peterson M540 Light Kit Fit A Bracket With 2-1/4" of Head Room?
    I measured from the center of the mounting studs to the top of the lights that come with the Peterson Light Kit # M540 and it is 2-1/2". Just to make sure, I also measure the Optronics Under 80" Trailer Light Kit with 25' Wiring Harness # TL5RK the same way, and they measure exactly the same, unfortunately. With that said, I may have another option available, but the lights will be completely different. If you look at the Optronics Trailer Light Kit # TL16RK, which technically is for trailers...
    view full answer...
    Image 1 for Image 2 for Image 3 for
  • What is the Correct Wiring Needed to Re-Do Lighting on Trailer?
    The correct kit for your Shoreland'r PWC trailer is going to depend on its width. If it is over 80 inches wide, you will want the Over 80-Inch Trailer Light Kit, # TL16RK. If the trailer is less than 80 inches wide, you will want to go with the Submersible, Under 80-Inch Trailer Light Kit, # TL5RK. Each kit is going to come with tail lights, side marker and clearance lights, a wiring harness with 4-way connector as well as the mounting hardware. To make things easier on yourself, you may...
    view full answer...
  • Do You Connect Green to Green on One Side and Yellow to Yellow On Optronics Trailer Light Kit TL16RK
    The Optronics Trailer Light Kit for Trailers over 80" Wide - Submersible - 25' Wiring Harness # TL16RK does have the correct wiring colors so you do simply match yellow to yellow on the driver side and green to green on the passenger side.
    view full answer...
  • Troubleshooting Dim Trailer Lights on Side of Trailer
    What you described sounds like a weak or insufficient ground which isn't allowing the lights to fully illuminate. I'd try running jumper cables for the ground of each light back to the main ground wire of the trailer wiring assembly to see if that fixes the problem. I also attached a help article on trailer wiring troubleshooting for you to check out as well.
    view full answer...
  • Is Water Supposed to be Able to Get in and Drain Out of the LED Trailer Light Kit, # TL16RK
    A submersible trailer light will have holes in it to allow water to come in and drain back out again. There is another type of light, a sealed unit, that is not supposed to let water in it. The amber lights in kit # TL16RK, are sealed lights, but the tail lights are not sealed units. It does sound like they are working as they are supposed to. Just make sure that your wiring connections are waterproof!
    view full answer...
  • Replacement Light Kit for Boat Trailer
    The light kit you would want as a replacement for your boat trailer depends on the width of the trailer. If it was less than 80" wide I recommend the Submersible, Under 80" LED Trailer Light Kit # TLL9RK while if your trailer is more than 80" wide I recommend the Submersible, Over 80" Trailer Light Kit # TL16RK.
    view full answer...
  • Wire Gauge Used on Optronics Aero Trailer Light Kit # TLL36RK
    I spoke with my contact at Optronics regarding the Trailer Light Kit # TL16RK referenced in your question. He stated that the kit features 20-gauge wiring for each of the wires. I have attached a couple short video demonstrations on this light kit that you can also take a look at.
    view full answer...
  • Rear Clearance Light Requirements for Trailers Over 80 Inches Wide
    The trailer light kit, # TL36RK, only comes with 2 marker/clearance lights in addition to the wiring and tail lights. Trailer light kit # TL16RK comes with 2 additional reflectors, not lights, that you could place as needed. I was looking through the federal requirements for lights and reflectors for various types and size trailers and found that AMBER clearance or marker lights are not a requirement for the center rear of the vehicle but RED clearance lights are required. Exactly 3...
    view full answer...
  • Troubleshooting Boat Trailer Lights Not Working
    Assuming you have trailer lights like the # TLL160RK I recommend double checking your wiring. The ground should be separate so that is not a problem. Make sure it is secure on a clean, bare-metal surface. You could either swap the other two wires around to check and see if that is the issue or you can use a circuit tester like the # PTW2993 to determine which is the correct wire. You might also want to check the ground connection on the trailer itself coming from your wiring harness. If...
    view full answer...
  • Troubleshooting Replacement Tail Light Not Lighting Up on Boat Trailer
    If you are saying you bought an incandescent replacement and all of your other lights are LED you will want to use an LED to match the other lights. Depending on the type of bulb you may be able to just swap the bulb with one like the # ARC63FR. You would want to match the bulb number and you also want the color to match the color of your lens. The other thing I would check is the ground connection and the wires running to that light. A poor ground connection could be the cause or possibly...
    view full answer...
  • Does Each Light Need to be Grounded When Wiring Trailer Lights
    Yes, all of the lights in the # TL16RK Waterproof, Over 80 inch Trailer Light Kit will need to be grounded. The white wires on the tail lights are attached to the trailer frame, and the chrome bases provide the ground to the trailer frame through the mounting hardware for the side marker lights. You will also need to attach the white wire from the trailer side 4-Way connector to the trailer frame to complete the installation. We have the a video detailing installation of the LED light...
    view full answer...

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Info for this part was:

Employee Mike L
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Employee Robert G
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Robert G
Employee Patrick B
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Patrick B
Employee Michael H
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Employee Jameson C
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Employee Tyler C
Written by:
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Employee Jacob T
Video Edited:
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Employee Chris R
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Employee Brian T
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