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Optronics LED Tail Light - Parking and Turn Signal - Submersible - Round - Amber
(2260 reviews)
Price: $15.03
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Optronics LED Tail Light - Parking and Turn Signal - Submersible - Round - Amber
Part Number: STL43AB
In Stock
$15.03
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- All Info
- Reviews (2260)
- Q & A (0)
- Videos (1)
- Photos
Optronics Trailer Lights - STL43AB
Highlights
- Brighter, Safer Signals: 10 white LEDs with amber lens shine clearly for turn and parking lights.
- Reliable In Any Weather: Waterproof design keeps moisture out, great for boat or utility trailers.
- Fewer Replacements Needed: LEDs draw just 0.360A turn / 0.030A park at 12.8V and last for years.
- Simple Plug Connection: PL-3 connector works with standard 3-prong plugs for easy wiring.
- Fits Cleanly: 4-5/16" round recessed mount installs with grommet or optional bracket.
- Road Legal: Meets DOT and FMVSS 108 standards so your trailer stays compliant.
Features to know about
Brighter Lighting That Draws Less Power: Efficient LED Tail Light
This 4-5/16" round Optronics LED tail light gives you strong, reliable illumination for parking and turn signals without the heavy power draw of older bulbs. The 10 white LEDs behind the amber lens are more efficient and durable than incandescent bulbs, pulling just 0.030 amps for the parking light and 0.360 amps for the turn signal at 12.8 volts. You get bright visibility while staying easy on your electrical system—and you won’t have to worry about burned-out bulbs again.
Built to Handle the Elements: Fully Waterproof and Submersible
If your trailer or work gear spends time around water, this light is ready. It’s completely waterproof with a sealed polycarbonate housing and lens that protect the LEDs from moisture and corrosion. Whether you’re backing down a ramp or driving through rain, it stays clear, bright, and dependable.
Clean Mounting and Simple Hookup: Recessed Design with Standard Plug
The recessed mount design gives a clean, factory-style look once installed. It fits into a cutout using a grommet (A45GB sold separately) and connects with a standard PL-3 3-prong plug such as the A45PB or A47PB pigtail (sold separately). If you prefer not to cut into a surface, you can use the optional BK45BB mounting bracket along with the same grommet. That flexibility makes installation straightforward for just about any setup.
Durable Construction That Meets Safety Standards: DOT and FMVSS 108 Compliant
The tough polycarbonate housing and lens resist impacts and road wear for long life, while the LED design eliminates fragile filaments. It meets DOT and FMVSS 108 requirements, so it delivers dependable performance that stays compliant with lighting regulations everywhere you go.
Specs
Dimensions
- Overall dimensions (including plug): 4-5/16" diameter x 1-15/16" thick
Electrical
- Compatible with: 12V DC systems
- Diodes: 10
- Power draw at 12.8 volts (Turn signal light): 0.360 amps
- Power draw at 12.8 volts (Parking light): 0.030 amps
Warranty
- Lifetime warranty on LEDs
Manufacturer Cross Reference
- Grote #: 53253
- Peterson #: M2760A-2
STL43AB Optronics LED Trailer Turn Signal and Parking Light - Waterproof - 10 Diodes - Round - Amber Lens
Alternate part number: STL-43AB
Video of Optronics LED Tail Light - Parking and Turn Signal - Submersible - Round - Amber
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Video Transcript for Feature Review LED Trailer Turn and Parking Light
Today we're going to be reviewing part number STL43AB. This is a sealed 4" round amber trailer light from Optronics. The amber round trailer light is a combination of parking and turn signal indicator. It's going to provide those two functions for you. It's going to feature a sealed, waterproof housing and lens unit with a corrosion-resistant design. It's going to have 10 amber super LED's and it will accept your industry standard three prong plug here at the back of the housing, which makes it really simple to upgrade from incandescent lights. This system is designed to flush mount with a mounting grommet and a three wire pig tail. Those are going to be required for complete installation and they are going to be sold separately.
You can find the grommet right here at etrailer.com with part number A45GB. You can pick up a straight 3 wire plug with part number A45PB or a right angle 3 wire plug with A47PB. We'll go over the dimensions real quick of the light. It's going to give us an overall diameter of 4-5/16" with an overall depth of about 1-15/16". This light is going to draw 0.310 and .046 amps at 12.8 volts. We're going to hook up our 3 wire plug to our external power source, that way you can see what it looks like with power running to the light and with our overhead lights turned off. We're going to go ahead and slide the connection in there.
The light is already going to come with some dielectric grease on the connection points that prevent corrosion. You can see here it's going to send out a nice consistent LED signal. This would be our parking light function. Then when we want to apply our turn signals, all we have to do is activate those and you can see how the light is going to brighten up, sending out an even stronger signal for the turn signal function. That's going to do it for today's review of part number STL43AB. This is a sealed 4" round amber LED trailer light from Optronics.
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Ratings & Reviews
4.8
2260 reviews
by:
Vinny
07/10/2015
We installed these on one of your work trucks because the standard lights are faint during the day and burn out after a short time. These lights are bright and will out live the life of vehicle.
by:
Darin
06/14/2021
bright. fast shipping
by:
DaveK
05/04/2019
Replaced the ones on our church bus. Some of the LED arrays had stopped working.
These? So far, so good.
These? So far, so good.
by:
Joey
07/24/2023
Updated the old bulbs because off LED outage.
by:
David
08/06/2015
The product was exactly what i wanted service was very fast and top notch!
by:
William
03/30/2020
2016
Honda
CR-V
Works great
by:
Lon
10/10/2026
by:
Felix
09/03/2021
by:
Q
03/05/2024
by:
Kirk
12/26/2024
by:
Jack
12/20/2022
by:
Justin
07/28/2022
by:
Stuart
09/22/2026
Great company. Quick shipping. Quality product. Fit was great. My original had a rounded outside edge with chrome trim ring. New light has flat outside edge. Ring still fits. Just not perfectly flush. Noticed Optronics has one like original called GloLight but wire connector is different. Didn’t want to splice up factory wires so this one works fine. Highly recommend. 2015 Ranger Trail Trailer.
by:
Matt G
06/29/2024
Light was the same size as previous one on EZ Loader boat trailer. Easy to install and very bright. Original one made it 10 years and had moisture inside causing most of the LEDs to stop working.
Matt G.
6/30/2025
Submersible light is still working properly. Good product for the price.
by:
Ninelines
09/11/2025
2008
ford
Ranger
Perfect fit and exact replacement for my 2008 Ranger Z21 trailer. Great price and fast shipping. Totally satisfied!!!
by:
Gail
06/27/2026
Perfect fit. Installation took longer than it should due to very poor previous repair performed at the dealer. Glad I chose, at 73 swf, to do rhe work myself. The first time I have had fully functional tail lights since buying in 2022. Woo hoo.
by:
William
05/31/2026
I just installed the new trailer lights on our Sundowner horse trailer. The lights are of good quality and replaced the original lights no fabrication needed. The wiring matched up well with the existing wiring.
by:
Randall
08/16/2026
Perfect fit, fast delivery,great customer service from ETrailer.
by:
Devin
09/19/2026
Fit perfectly. Nice bright LED lights.
by:
Harold
08/31/2026
Was the exact product I needed,shipping was fast.
by:
Ronnie
06/10/2026
Great product. An exact copy of what I had installed on my enclosed trailer. It was an easy install with color matching wires. Great quality, easy install and an excellent price point. Can’t go wrong here folks.
by:
Karen
05/09/2026
The lights were easy to install. They are bright lights, very visible in the sunlight.
We installed these on our older dump trailer, replacing the old lights.
They fit perfect, and look and work great.
We installed these on our older dump trailer, replacing the old lights.
They fit perfect, and look and work great.
by:
Daniel
08/25/2026
Seamless! Everything was great from communication, on time delivery and easy installation. Thank you
by:
Ronald
04/26/2026
I have a 97 Cargo Mate and I wanted to make the conversion to LED lights. The lights and grommets were a perfect upgraded match. So much brighter and better peace of mind when traveling in inclement weather to be seen from behind. Everything was great quality and shipped fast
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Jerred H.
9/23/2026
Thanks for the kind words Stuart. I appreciate you coming back and sharing that review and making that recommendation. Glad we were able to get you all set up with the new light.