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Dual-Face LED Trailer Light - 5 Function - 42 Diodes - Round - Red and Amber Lens

Dual-Face LED Trailer Light - 5 Function - 42 Diodes - Round - Red and Amber Lens

Item # STL52ARB
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STL52ARB - 4-1/2 Inch Diameter Optronics Trailer Lights
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4-1/4" Diameter round. Waterproof, dual-face light serves 5 functions: stop, front and rear turn, tail, and parking light. Front-facing amber lens and rear-facing red lens. Durable die-cast steel housing. Single post mount. 3-Wire design. Lowest Prices for the best trailer lights from Optronics. Dual-Face LED Trailer Light - 5 Function - 42 Diodes - Round - Red and Amber Lens part number STL52ARB can be ordered online at etrailer.com or call 800-298-8924 for expert service.
  • All Info
  • Reviews (17)
  • Q & A (12)
  • Photos
  • Why etrailer?

Optronics Trailer Lights - STL52ARB

  • Tail Lights
  • Round
  • LED Light
  • Red and Amber
  • Pedestal Mount
  • 4-1/2 Inch Diameter
  • Submersible Lights
  • Optronics
  • Stop/Turn/Tail

4-1/4" Diameter round. Waterproof, dual-face light serves 5 functions: stop, front and rear turn, tail, and parking light. Front-facing amber lens and rear-facing red lens. Durable die-cast steel housing. Single post mount. 3-Wire design.


  • Dual-face light serves 5 functions and has a front facing amber lens and a rear-facing red lens
    • Stop light, front and back turn, tail light, and parking light
  • Great for farm equipment and agricultural applications
  • Sonically sealed, waterproof housing and lens unit is submersible
  • Durable surface-mount technology (SMT) construction of LED circuit board
    • Better withstands shock and vibration
    • Allows improved heat distribution and thinner construction
  • LEDs make great replacements for incandescent lights
    • Last 50 times longer
    • More efficient - provide brighter light with less power output
    • No bulbs to replace - no brittle filaments
  • Durable die-cast steel housing
  • Red and amber lens over white LEDs
  • Compatible with 12V DC systems
  • Post mount installation - hardware included
  • 3-Wire pigtail
  • DOT Compliant


  • Dimensions: 4-1/4" diameter x 1-15/16" deep
  • Diodes: 42 (21 per side)
  • Power draw at 12.8V:
    • Stop/turn: 0.360 amps
    • Tail: 0.030 amps
  • Lifetime warranty on LEDs

Optronics STL52 Series Round LED Pedestal Light Diagram

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.

Pedestal-Mount Light

Pedestal mount light

Pedestal mount trailer lights install standing up from the mounting point. And mounting hardware, typically one or two bolts, is used to secure the light to the trailer.

STL52ARB Optronics Dual-Face LED Ag Tractor Light - Post Mount - 5 Function - 42 Diodes - Round - Red and Amber Lens

Replaces STL51AB and STL51RB

Alternate part number: STL-52ARB

California residents: click here

Customer Reviews

Dual-Face LED Trailer Light - 5 Function - 42 Diodes - Round - Red and Amber Lens - STL52ARB

Average Customer Rating:  4.9 out of 5 stars   (17 Customer Reviews)

4-1/4" Diameter round. Waterproof, dual-face light serves 5 functions: stop, front and rear turn, tail, and parking light. Front-facing amber lens and rear-facing red lens. Durable die-cast steel housing. Single post mount. 3-Wire design.


Very impressed. Very attractive. High Quality product. I wanted a metal fixture and I finally found it with your company and the myriad of products you let me choose from. Thank you. 861626


1 year in and they work great. I am very satisfied. 811163


The led lights are bright ,a Work well . Service and delivery was fast ; and the product was a good value. etrailer has served me well over the years I have been doing business with them. I would recommend them to anyone. 647332


I am very satisfied with my experience with etrailer. The parts I received appear to be very good quality. I have not installed them yet though as I am waiting on Hurricane Michael to pass through. However the lights do seem to be very solidly built. I needed this style and etrailer was the one that had it. 572837

Robert - 10/09/2019



These wired up very easily, work great ,and are extremely bright . The frame is metal and not plastic but they still cost way too much for LEDs 563303


product was delivered in a timely fashion quality appears to be good but haven't had time to install 515510


We love them. They got wet when we put the boat in the water several times & they ARE waterproof! Love the bright LED lights (which are so much brighter that the old lights) & the wiring matched both our tow vehicles! They were a little pricey but in reality, you get what you pay for. These are high quality lights. Thanks! 343699


love the product this is the 2nd set we have bought. highly recommend both product and company 215826


I I am very pleased with these lights. I installed then on my travel trailer as side markers. They are very bright, and I see them just fine in the rear-view mirror. 189011


Came on time. Quality good. Nice and bright. Thanks, E-Trailer. 94573


Good 90900




they show up very bright even in the day time. very easy to installe and hook up. 61512


High quality! 60610


Better than they looked in the pitcher 35664


I like this light so much I bought one for my neighbor. We don't use them in the traditional way, we use them as "Dust Lights" on the rear of out Polaris RZR off road vehicles. In heavy dust, amber lights can be seen better than any other color. That is why they are required on all off road race vehicles. We don't race, but we do run high speed in dusty conditions and this light has saved the day on more than one occassion. You can see the light mounted on the left rear of the RZR in the attached picture. 31212


This light has 2 intensities (3 wires). The HIGH intensity is very bright and will be excellent for an amber dust light on the rear of my off-road buggy, which is why I bought it. The LOW intensity is not nearly as bright. Not quite sure what it's for - perhaps a parking light? 22655


Ask the Experts about this Optronics Trailer Lights

  • Availability of Pedestal Mount LED Amber Trailer Clearance Light
    For an amber pedestal mount LED clearance light the part # STL52ARB would work. This has an amber lens on one side and a red lens on the other. I attached review video and a link to a page that has all of the LED trailer lights we carry. The SAE number on a light isn't a reliable way to determine it's model number since it is not actually a part number.
    view full answer...
  • Diameter of Mounting Post Used By Optronics Dual-Face LED Stop/Turn/Taillight Part # STL52ARB
    The Optronics Dual-Face LED Stop/Turn/Taillight you mentioned, part # STL52ARB uses a 12mm mounting bolt. The lamps are sold individually, so for a pair you'd need to order two of them. I've linked you to a product demonstration video featuring the # STL52ARB lamp.
    view full answer...
  • Diameter of Mounting Stud for Optronics Dual-Face LED Trailer Light # STL52ARB
    The Optronics Dual-Face LED Trailer Light # STL52ARB referenced in your question features a 12mm diameter bolt as its mounting stud, which is the size opening you will need to mount the light. This is a really nice dual-face light that serves 5 functions (stop, front and back turn, tail light, and parking light) with a sonically sealed waterproof housing. I have attached a video review that you can check out as well.
    view full answer...
  • Installation of Dual-Face LED Lights # STL52ARB based on Function and Color
    The Dual-Face LED Stop/Turn/Tail and Parking Light - 42 Diode - Post Mount - 4" Round - Red/Amber # STL52ARB has 3 wires. The black wire goes to the tail light/running light which is normally a brown wire on your trailer. The Red Wire is for Stop/Turn, which is normally green or yellow on your trailer. The white wire is ground, which is also white on most trailers. If you trailer wiring colors do not match these, then I recommend using a circuit tester like # PTW2993 to test the functions.
    view full answer...
  • Double Or Dual Face Tail Lights Installation
    The Dual-Face LED Stop/Turn/Tail and Parking Light - 42 Diode - Post Mount - 4" Round - Red/Amber # STL52ARB can be installed vertically or horizontally. The red side faces the rear of the vehicle or trailer and the orange faces the front. This allows the visual signals from both sides, but the brakes only from the rear.
    view full answer...
  • Availability of LED Post Mount Trailer Light with Wire Leads Through Post
    I recommend taking a look at the Optronics Dual-Face LED Tail Light # STL52ARB. This dual-face trailer light (red side for stop/turn/brake and amber side for parking/rear turn signals) features a post mount with a 3-wire design with leads existing through the post. The lens measures 4-1/4 inches in diameter and 1-5/16 inches deep. This is the closest option we have available to what you are looking for. I have attached a short video demonstration on this light so you can get a closer...
    view full answer...
  • 4 Inch, Round, Red, LED Trailer Light Recommendation
    The part # STL52ARB sounds like exactly what you need. This is a stud-mounted, round, red, trailer light with a diameter of 4-1/4 inches. Check out the review video I attached for more info.
    view full answer...
  • Is the Dual-Face LED Stop/Turn/Tail and Parking Light # STL52ARB Submersible
    Yes, the Dual-Face LED Stop/Turn/Tail and Parking Light # STL52ARB that you referenced is submersible and would work well on a boat trailer. I attached a review video for this product for you to check out also.
    view full answer...
  • How to Install Ground Wire for LED Light That Replaces Stud-Grounded Light
    Most likely the original lights you are replacing used the mounting hardware/stud to make the ground connection to the trailer frame. This is not unusual. A light such as # ST52AA uses the mounting stud to establish ground while the similar light # STL52ARB has a white wire for ground. All you need to do is connect the new light's white ground wire to a clean bare metal spot on the trailer, using a ring terminal like # DW05737-1 or you could run a ground jumper wire up to a wiring junction...
    view full answer...
  • Diameter of Round Pedestal/Post Mount Trailer Tail Lights
    The diameter of the lens on the Dual-Face Trailer Parking/Turn Signal Light part # ST52AA is actually 4-5/16". The smallest round pedestal/post mount trailer light we offer is the Dual-Face LED Stop/Turn/Tail and Parking Light part # STL52ARB which is 4-1/4" in diameter. Unfortunately, we do not carry a pedestal/post mount trailer light in a 3" diameter. I have attached a list of our trailer tail lights for you if you would like to pursue alternative solutions.
    view full answer...
  • Pedestal Mount Warning Lights for Use on a Truck
    We have several pedestal mount lights that might work for you. I have included a link to the right to the options. Some of them probably would not work for you but something like # STL52ARB is probably more what you are looking for. This particular light is amber on one side and red on the other. I have linked a video review for you.
    view full answer...
  • 4 inch Diameter Round Pedestal Mounted Trailer Light Availability
    The closest thing we have to what you need is the part # STL52ARB. This is a pedestal mounted round LED light that measures 4-1/4 inches in diameter. It has a red and amber side on it so hopefully it would work for your application. I attached a review video for you to check out as well.
    view full answer...

Do you have a question about this Trailer Light?

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Info for this part was:

Written by:
Tyler C
Expert Research:
Jameson C
Updated by:
Brian T

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