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Submersible, Under 80" Trailer Light Kit with 25' Wiring Harness
(559 reviews)
Price: $35.75
In Stock
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Submersible, Under 80" Trailer Light Kit with 25' Wiring Harness
Part Number: TL5RK
In Stock
$35.75
Retail:$83.99
You Save: 57%
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- All Info
- Reviews (559)
- Q & A (0)
- Photos
Optronics Trailer Lights - TL5RK
- Tail Lights
- Square
- Incandescent Light
- Amber
- Red
- Brake/Tail/Turn
- License Plate
- Marker
- 5L x 4-1/2W Inch
- Submersible Lights
- Surface Mount
- Optronics
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
- 2 Red, stud-mount, submersible tail lights (ST6RB and ST7RB)
- 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
Customer Satisfaction Score:
99% were satisfied with this product
1% of customers were not satisfied
- Product did not meet expectations
- Wrong item was ordered
- Defective
Ratings & Reviews
4.7
559 reviews
by:
Ryan
10/19/2026
I installed these on a wood hauling trailer and they work great. I had plenty of wire etc..
by:
Philip
09/03/2025
When you want it right go with etrailer.com
The components in my package worked perfecty .... happy birthday to my 25 year old utilty trailer!
The components in my package worked perfecty .... happy birthday to my 25 year old utilty trailer!
by:
Jason
06/30/2026
Easy to install and functioned as expected. This kit was used to re-wire a small sailboat trailer (Lazer series boat)
by:
Theodore
05/26/2020
Put these on an old boat trailer. Came out great. I got some white 16 gage stranded wire to carry the ground out to each mounting place. Helps the lights stay on even when stuff gets rusty.
by:
Buffalo_BiL
07/31/2018
Rewired my 8x4 bed trailer, and chose these fo mo betta rain proof. EZ wiring, they're working fine!
Buffalo_bil
7/31/2019
Ok, had an issue with the bulb socket for brake and turn signal. Those socket designs date back to the stone age. Hard to set the bulb for proper electrical contact. Badly needs an updated design.
by:
Light_Submerger_00
10/05/2023
Really cheap.
These lights are marketed as submersible, but based on what's in the package I'm really dubious.
The lens bodies are not sealed. As you can see My photo, each lens body has a clearance hole for the wire - No gasket, and plenty of room around the wire, So water will definitely flood in and submerge the contacts and bulb/socket If you put these on a boat trailer.
Additionally, to Make the wire connections. They give you wire nuts. For submersible wire connections, at the very least, you should use crimp butts wrapped in tape - or better yet a heat shrink crimp butt. But they give you wire nuts, which aren't even really stable against vibration, let alone moisture.
It does say 3-year warranty on the package, however, so I guess I'll be testing that out.
These lights are marketed as submersible, but based on what's in the package I'm really dubious.
The lens bodies are not sealed. As you can see My photo, each lens body has a clearance hole for the wire - No gasket, and plenty of room around the wire, So water will definitely flood in and submerge the contacts and bulb/socket If you put these on a boat trailer.
Additionally, to Make the wire connections. They give you wire nuts. For submersible wire connections, at the very least, you should use crimp butts wrapped in tape - or better yet a heat shrink crimp butt. But they give you wire nuts, which aren't even really stable against vibration, let alone moisture.
It does say 3-year warranty on the package, however, so I guess I'll be testing that out.
by:
Jeb
10/27/2025
They work fine but I’m not sure about the submersible part, which is one of the reasons I bought it, that and the price. It uses regular incandescent bulbs and the housing has open holes where the wires run. So I’m thinking either the hot bulb glass will break on contact with water or eventually corrosion will eat away the contact points. Again this was cheap so not a huge deal and I might be wrong about the bulbs breaking.
Mike L.
10/28/2025
The holes are intended to allow water to drain out of the lamp housing. I used this same setup on my SeaDoo trailer for years, and never had a bit of trouble with them.
by:
Robert
05/07/2025
Great product with ease of assembly
Robert
5/26/2026
its still working great
by:
Brian
09/15/2025
I am disappointed with the design and parts that come with it. The lights are submersible, yet the wires aren't hard wired directly into the lights. They require connecting wires together. Worse, the kit comes with wing wire nuts to do so, not heat crimp waterproof connectors. So now there's two additional points in my trailers wiring that can separate. Poor design. Should have come with proper connectors or been hard wired directly to the lights so no connection is needed. Lights seem to otherwise be decent quality.
by:
Chris
04/20/2021
Absolutely fastest shipping. Excellent quality and easy install. Used old wires to feed through frame and only took a couple of hours. Thanks for great merchandise.
by:
Anthony
07/06/2019
Thanks ETrailer for making my boat trailer restoration a success . I restored a 1960 boat trailer to look brand new with your help.
by:
Vincent
07/13/2026
Exactly what I needed,after a minor collision wrecked my original lights.
by:
Lazaro N
08/12/2024
Item arrived in very secured packing, shipping was fast, the quality is very good, I will buy again from you, Thank You.
by:
David
09/07/2025
Would be nice to have a ground wire coming from the tail light. Had to buy more wire and ground it to the frame for the lights to work correctly.
by:
john c
09/23/2017
The lighting system performed well in traveling from NY to northern Michigan and return to carry an old boat back for restoration.
by:
Steve
08/16/2021
This is an excellent product and simple to install. As long as you have a functioning plug-in on your vehicle you’ll be happy.
Time will tell how well it holds up to water and vibration
Time will tell how well it holds up to water and vibration
Steve
8/17/2022
I’ve since pulled my boat to the lake with the trailer that I installed this lighting harness on. I unplug the lights before I back down the boat ramp to assure I don’t short out the system. Other than that I am still satisfied and would recommend these to anyone. Simple to install
by:
Mark
10/11/2025
Good product. Easy to install. Used on 4x8 utility trailer.
by:
Cynthia
06/10/2026
Excellent value for the price
by:
Richard
09/24/2018
I had to replace the lights on my utility trailer. The Kit came complete with easy to follow directions. Everything matched up perfectly almost plug and play. It took about 3 hours to remove the old lights and install the new ones. The only extra thing I had to purchase was extra white ground wire. The length that came with the kit was a little short. All other wire was more than ample length. That is why it got 4 stars other than that minor thing it would have gotten 5 stars. I am not a big user but the people at e-trailer are professionals with great follow up. This is the 2nd time that I used them and I do not hesitate to recommend the company and people.
Richard K.
9/24/2019
They are holding up fine and I would recommend them to anyone
by:
V
03/16/2026
As described
by:
John
09/19/2025
Great product, fast shipping excellent communication
by:
Russell
08/23/2025
Fast ship and easy install on my Shore Landr boat trailer.
by:
Gibson
08/14/2019
Ordered this light kit from etrailer and paid a little more than buying a generic set from [online retailer] thinking, like other products I have purchased here, the lights would be a better quality. Instead they arrived with very light wire, appears to be 18 gauge and average quality "submersible" lights. The cheaper lights on [online retailer] came with 16 gauge wire and looked at least if not more waterproof.
Victoria B.
8/21/2019
I confirmed with Optronics that the pigtail wires on the lights in this kit have 20 gauge wire. These lights are designed to be submersible and feature a drain hole on the bottom too allow any water to escape, they are not waterproof.
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Theodore
5/27/2021
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