1. Trailer Lights
  2. Optronics
  3. Tail Lights
  4. Round
  5. Incandescent Light
  6. Red
Optronics Trailer Tail Light - Stop, Turn, Tail - Round - Red Lens - Passenger Side

Optronics Trailer Tail Light - Stop, Turn, Tail - Round - Red Lens - Passenger Side

Item # ST20RS
lowest price pledge
Retail:$16.38
Our Price: $11.53
You Save: 30%
Trailer Lights
Orders above $99 qualify for Free Shipping
Shipping Weight: 0.52 lbs
Quantity: 
In Stock
Optronics 4 Inch Diameter Trailer Lights - ST20RS
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Customer Photos

Videos

3-7/8" Diameter round. Incandescent trailer light serves 3 functions: stop, turn, and tail light. Screw-on lens. Durable steel housing. Stud mount to trailer with included studs. 2-Wire design. (1) 1157 bulb. Lowest Prices for the best trailer lights from Optronics. Optronics Trailer Tail Light - Stop, Turn, Tail - Round - Red Lens - Passenger Side part number ST20RS can be ordered online at etrailer.com or call 800-298-8924 for expert service.
  • All Info
  • Reviews (27)
  • Q & A (4)
  • Videos (1)
  • Photos
  • Why etrailer?

Optronics Trailer Lights - ST20RS

  • Tail Lights
  • Round
  • Incandescent Light
  • Red
  • Surface Mount
  • 4 Inch Diameter
  • Non-Submersible Lights
  • Optronics
  • Stop/Turn/Tail

3-7/8" Diameter round. Incandescent trailer light serves 3 functions: stop, turn, and tail light. Screw-on lens. Durable steel housing. Stud mount to trailer with included studs. 2-Wire design. (1) 1157 bulb.


Features:

  • Incandescent trailer light serves 3 functions
    • Stop, turn, and tail
  • Incandescent bulb is easy to replace
  • Shock-proof socket protects bulb against damage
  • Durable steel housing with screw-on lens
  • Red lens over incandescent bulb
  • Compatible with 12V DC systems
  • Stud mount to trailer with included studs
  • 2-Wire design includes power lead and ground wire
  • DOT compliant


Specs:

  • Configuration: passenger side
    • Driver side: ST21RS (sold separately)
  • Dimensions: 3-7/8" diameter x 3-1/16" deep
  • Distance between mounting holes (center on center): 2"
  • Bulb type: 1157
  • Power draw at 12.8V:
    • Stop/turn: 2.3 amps
    • Tail: 0.9 amps
  • 3-Year limited warranty


Optronics ST20 Series Surface Mount Tail Light Dimensions


ST20RS Optronics Trailer Tail Light - Stop, Turn, Tail - Surface Mount - Round - Steel Housing - Red Lens - Passenger Side - Right Hand




California residents: click here


Video of Optronics Trailer Tail Light - Stop, Turn, Tail - Round - Red Lens - Passenger Side

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 - ST20RS Review

Today we'll be reviewing part number ST20RS. This is the Optronics Trailer Light for the passenger side. The round trailer light is going to serve as your brake light, turn signal, and tail light. It's got the red acrylic lens that's simple to replace. It's going to attach with the two included screws. Very easy to change incandescent bulb that's going to offer a bright light.

It's going to sit in a shock-proof socket for a long bulb life. It's also going to feature the black enamel-coated steel housing that's very durable and strong, as well as corrosion resistant. Here on the rear, it's going to have the two lead wires exposed. These are the wires needed to connect your light, and then the unit's going to ground through the mounting hardware. This is a surface mount design so it's going to mount using the two studs on the back of a housing. Those are included.

They simply just slide into the channels and then you can adjust them as needed to best suit your towing application. It is Department of Transportation compliant so it meets FMVSS108 and CMVSS requirements for automotive lighting. Again, this is for the passenger side. If you need one for the driver's side, you can find that here at etrailer.com using part number ST21RS. This is going to give us an overall diameter of 3-7/8" with an overall depth of 3-1/16".

The bulb type is 1157. It's a double filament. Power draw is at 12.8 volts so when using the brake light that's going to be 2.3 amps, turn signal is 2.3 amps, and the tail light is 0.9 amps. Again, the installation is going to use those two studs that are included, and once those are installed they're going to measure 2" center on center apart from one another. We're going to go and connect this to our external power source so that we can see what the light looks like with power running to it and with our overhead lights turned off. So go ahead and make all of our connections.

The red wire's going to be for the tail light function, so we'll get that connected. Then the black wire on the back of the housing is going to be for our stopper 00:01:59 and turn signal. You can see here it sends out a nice, consistent signal. This is going to be the tail light function. It's going to brighten up when we apply the brakes, and it's going to do that same thing when we apply our turn signal. That's going to do it for today's review of part number ST20RS. This is the Optronics Trailer Light for the passenger side of your trailer. .


Customer Reviews

Optronics Trailer Tail Light - Stop, Turn, Tail - Round - Red Lens - Passenger Side - ST20RS

Average Customer Rating:  4.9 out of 5 stars   (27 Customer Reviews)

3-7/8" Diameter round. Incandescent trailer light serves 3 functions: stop, turn, and tail light. Screw-on lens. Durable steel housing. Stud mount to trailer with included studs. 2-Wire design. (1) 1157 bulb.

- ST20RS
by:

GREAT QUALITY,I HAVE ALREADY PUT LEDS IN THE LIGHTS. THIS LIGHT WOULD BE GREAT WITH LEDS, THEY SHOULD BE OFFERED IN THEM. 405033



- ST20RS
by:

Quick delivery and reasonable delivery fees. Product is just as advertised-good quality for the low price. I used two of them for a homemade sign for the wall above my model railroad. The lights were wired to a switch and then to an alternating flasher and they "wig-wag" flash just like the real thing! Very satisfied with these lights. 686669



- ST20RS
by:

Well, the UPS man was NOT happy. He chewed on me for not having my name on the package. I reminded him that I didn't send the package. The address, minus the name, would have gotten to me with no fuss; by USPS. Not so with UPS. They need a physical address, not a post office box number. I happen to winter in a mobile home park which has private streets not recognized by USPS. Hence his problem. He had no name to look up and only a PO box #. However, the tail lamps were just what I wanted and they arrived in good shape. 611232



- ST20RS
by:

work great on my dad car trailer. great light for price. 827684



- ST20RS
by:

always satisfied with quality and service. etrailer.com returning customer. 784421



- ST20RS
by:

Everything is great and the shipping was fast. Always good to deal with you guys. Thanks. 736166



- ST20RS
by:

Just what the doctor ordered! 718464



- ST20RS
by:

Just arived, look good. Fast professional service 718463



- ST20RS
by:

Arrived just as ordered. Looks like a quality product. Dimensions given were correct. 698501



- ST20RS
by:

Great lights. perfect for my trailer. 692162



- ST20RS
by:

Not the first time I have ordered from etrailer. Good products, good prices and always shipped quick 656862



- ST20RS
by:

Product exactly as advertised. Perfect form, fit and function. No surprises! 574772



- ST20RS
by:

Good product and great seller 564576



- ST20RS
by:

I should have ckecked size my old one, new one is smaller but works good. 504829



- ST20RS
by:

This light set I bought a year ago are still great and is close to my old light that is enclosed by wrap around guard so it fits perfectly well and works well.. 455651



- ST20RS
by:

Lights were exact replacement for the ones I installed 30 years ago. The old ones were getting intermittent due damage over the years. 441841



- ST20RS
by:

They fit perfect just as described. Thank you so much. 410496


Comments
perfect
Michael E - 07/21/2018

41257

- ST20RS
by:

Got the tires, wheels, lights, and wiring kit to rebuild an old utility trailer. The website has a wealth of info to help find exactly what was needed. Michelle S. was very helpful (and friendly!) in resolving a delivery question. 409271



- ST20RS
by:

Product Review:I had these type lights on an old Toyota rust-bucket with a wooden bed which still is my most loveable vehicle; can't find these lights locally (N/W NC mountains); found your ad online and hoped these would match those already on the Toy and replace some damaged and rusty; couldn't believe I could get exact replacements, but I sure did; order date March 29 early AM, mailman handed them to me April 31 at 1 PM at my house "in the same year!" They had traveled, according to map, across from the edge of Missouri through the southern edge of Indiana, across the length E-W of Kentucky, SW Virginia to Greensboro, NC, then backtracked on land back to my home via USPS to me. Put them to your ear and you could still hear the Mississippi!! Give it a big 5 stars! 362155



- ST20RS
by:

Very nice light and a very good price, I installed two of these lights on a 1971 Toyota Land Cruiser for tail lights 359119


Comments
Very good
Jim R - 03/27/2018

36510

- ST20RS
by:

Just got the correct product in three days. The salesperson helped me find just the right part as I am not an expert and was particularly nice and knowledgeable. I appreciated the help. 345251



- ST20RS
by:

Great company 338055



- ST20RS
by:

Used them for the tail lights on my golf cart. They work great and have not had any problems with them. 306018


Comments
Great Product No Problems
Bob H - 10/12/2017

29142

- ST20RS
by:

My order arrived in good time, well-packaged and complete. The quality of the materials looks to be very good and I can't wait to get them installed on my trailer and bring it back to life. Etrailer's communication and customer responsiveness is fantstic! 186930



- ST20RS
by:

this one works also 184104


25
27
Show More Reviews

Ask the Experts about this Optronics Trailer Lights

Do you have a question about this Trailer Light?




  • Why etrailer.com?

    At etrailer.com we guarantee:
  • Highest quality trailer lights for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate trailer light information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Written by:
Tricia G
Updated by:
Brian T

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.