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Optronics Combination Trailer Tail Light - 6 Function - Incandescent - Red Lens - Passenger Side

Optronics Combination Trailer Tail Light - 6 Function - Incandescent - Red Lens - Passenger Side

Item # ST8RB

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Optronics 5L x 5W Inch Trailer Lights - ST8RB
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Product Images

In Use/Installed

Customer Photos


  • Tail Lights
  • Square
  • Incandescent Light
  • Red
  • Surface Mount
  • 5L x 5W Inch
  • Non-Submersible Lights
  • Optronics
  • Stop/Turn/Tail
  • Side Marker
  • Side Reflector
  • Rear Reflector
5-5/16" x 4-9/16" Square. Incandescent trailer tail light serves 6 functions on trailers under 80" wide: brake, tail, turn, side marker, side reflector, and rear reflector. Shock proof sockets. Stud mount. Quick connect wiring. Lowest Prices for the best trailer lights from Optronics. Optronics Combination Trailer Tail Light - 6 Function - Incandescent - Red Lens - Passenger Side part number ST8RB can be ordered online at etrailer.com or call 800-298-8924 for expert service.


  • All Info
  • Reviews (353)
  • Q & A (27)
  • Videos (2)
  • Photos
  • Why etrailer?

Optronics Trailer Lights - ST8RB

5-5/16" x 4-9/16" Square. Incandescent trailer tail light serves 6 functions on trailers under 80" wide: brake, tail, turn, side marker, side reflector, and rear reflector. Shock proof sockets. Stud mount. Quick connect wiring.


Features:

  • Trailer tail light serves 6 functions on trailers less than 80" wide
    • Stop, Turn, Tail, Rear Reflex, Side Marker, and Side Reflex
  • Built-in reflex reflectors remove the need for a separate reflector
  • Shock-proof socket protects the bulb
  • Incandescent bulb can be easily replaced
  • Red lens over 2 bulbs
  • Durable polycarbonate housing and acrylic lens
  • Stud mounts on trailer with included studs
  • Quick connect wiring - simply insert stripped wire into holes for a secure connection
    • Light grounds through mounting studs


Specs:

  • Configuration: passenger side
    • Driver side: ST9RB (sold separately)
  • Dimensions: 5-5/16" long x 4-9/16" wide x 2-7/8" deep
  • Distance between mounting studs (center on center): 2"
  • Power draw at 12.8V:
    • Stop/turn: 2.5 amps
    • Tail: 1 amp
  • 3-Year warranty


Manufacturer Cross Reference
Light will work as an exact replacement for:

  • Uni Bond # TL4400
  • Wesbar # 3060
  • Graote # 52302
  • Peterson # 440

Optronics ST8 Series Universal Mount Combination Tail Light Diagram

ST8RB Optronics Universal Combination Tail Light for Trailers Under 80" - 6 Function - Incandescent - 2 Bulbs - Right Hand

Alternate part number: ST-8RB






California residents: click here


Video of Optronics Combination Trailer Tail Light - 6 Function - Incandescent - 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 - ST8RB Review

Today we are going to review part number ST8RB. This is the Optronics trailer stop, turn and taillight. This is a six function light for the right hand side of the trailer. This multifunction stop, turn and taillight. This will serve six functions for trailer that are less than 80 inches wide of the stop, turn, the tail, a rear reflex, a side marker and a side reflex. This is corrosion resistant lights.

The molded plastic housing and durable lens will provide all-weather protection against corrosion. The light features a screw down replaceable lens and easy to place incandescent bulbs. The part number for the bulb that is using this is 1157. The light socket is shock proof so it guarantees long bulb life. The light is a universal mount with two studs on the back and these stud are on a two-inch center and this light is grounded through the mounting studs so when this is installed your grounding point would be the studs.

A few dimensions on the slide. The overall length from side marker to edge will be 5-17/64. The depth will be 2-7/8 and then on the light itself will be 4-9/16 by 4-9/16. And this uses on the back, it will use the quick connect wiring and what you would do there is basically just strip your wire and insert it into the hole and it will hold in there and then to release it theres a little hole right under it. You just push like a paper clip in there and you can remove the wire.

So I have a power supply here. Im going to try to give you an idea of the brightness of here and it is marked on the back, the color and the function of that. So I put in the brown for the taillights. So if I use the white and ground it to the stud, that will give you the taillight brightness and then I a green wire which will be for our stop and turn. I push that in and again I ground it.

Then this will give you the brightness of the stop and turn. Then what Im going to go ahead and do is turn off the overhead lights and then I will show you the brightness. This will be the taillight, and that will be the stop and turn and that should do it for part number ST8RB.


Customer Reviews

Optronics Combination Trailer Tail Light - 6 Function - Incandescent - Red Lens - Passenger Side - ST8RB

Average Customer Rating:  4.8 out of 5 stars   (353 Customer Reviews)

5-5/16" x 4-9/16" Square. Incandescent trailer tail light serves 6 functions on trailers under 80" wide: brake, tail, turn, side marker, side reflector, and rear reflector. Shock proof sockets. Stud mount. Quick connect wiring.

- ST8RB
by:

Simple to find product with the best customer service! I have ordered before and plan to continue to use etrailer! 574933



- ST8RB
by:

I was able to pick out the exact item I needed extremely quickly. Easy to find on the site. Plus it took me 5 minutes to install. thanks Bruce 150754


Comments

Works great .

Bruce R - 09/11/2015

14867

- ST8RB
by:

My trailer is probably more than 20 years old (hand me down from my dad) but the installation was straight forward and it fit exactly where the old ones were without issue. 572578



- ST8RB
by:

Very good trailer light. Easy to install, self clamping wire inserts sped up the installation. Folks at etrailer.com were prompt at shipping and kept me informed through emails. 92874


Comments

Working great after one year. If I need to change the other light, Ill order another from your website.

Robert R - 02/02/2015

9217

- ST8RB
by:

I recently purchased a light from etrailer.com-->great price, same day order filling with email update, fast shipping in normal mode... two follow up emails...thank you for great service, I'll be sure to bookmark your site. 100633



- ST8RB
by:

It’s a perfect replacement part! 650858



- ST8RB
by:

The tail lights are junk. The way the bulbs hold in is very poor. Had to change to different Lights within a week 645269



- ST8RB
by:

Everything from etrailer is always as described and great prices and quick shipping! 642714



- ST8RB
by:

god looking light but after a few bumps the wires work loose and no light they just need a more positive to attach the wires 641230


Comments

We have found that if you strip a longer piece of the wire insulation off the wires, double them over twice and twist tightly together, the diameter of the wire increases and makes a better connection.

-- Mike L - 05/15/2019

55299

- ST8RB
by:

Good 638105



- ST8RB
by:

It arrived on time and just what I need ed 635855



- ST8RB
by:

Works great, ws easy to install 628554



- ST8RB
by:

Looks to be a perfect fit for the replacement of the housing that I mangled. Shipping time was very short, therefore good. Thanks again for great service. this is the 2nd part that I have ordered from you. 615956



- ST8RB
by:

arrived quickly 615426



- ST8RB
by:

Great as always!!!! Thanks 612945



- ST8RB
by:

I searched the big name parts and online retailers but this is exactly what I needed, it was complete, and it was extremely simple to install. I spent more time looking than installing! Price was right, web site and ordering was very easy, and the folks are very nice. Even the 'economy' shipping was very low cost, and didn't take long, either. I'll buy more parts from them instead of paying much more locally in PA. 608816



- ST8RB
by:

Just as described and pictured. 605837



- ST8RB
by:

Great trailer parts and accessories at low prices. The ordering was quick and easy 603832



- ST8RB
by:

Just 2 wires and 2 nuts, easy to replace the old broken one. 602129



- ST8RB
by:

Exactly what I needed and they shipped the same day I ordered which was very late in the day. Will use this company again and highly recommend them! 601568



- ST8RB
by:

Fast fits and works thanks we well do business again have a great day 601475



- ST8RB
by:

As advertised, and at a fair price! 600775



- ST8RB
by:

As described and order cam was ordered. 600095



- ST8RB
by:

After the light broke on my trailer I could not find a replacement at the original manufacture, my search at etrailer paid off with an exact replacement and at a great price. Shipping was fast and on time. 598217



- ST8RB
by:

Great price, fast delivery, exact fit, replaced in just a few minutes! 597037



- ST8RB
by:

There is no wiring from the trailer light fixtures (2) I bought. I have to go find wiring that plugs into the back of each fixture. Never was I notified when I selected these two trailer lights about this. Respectfull, James 595039



- ST8RB
by:

great light and great price 594323



- ST8RB
by:

The products were delivered when they said they were going to be. I will definitely order from them again. 593214



- ST8RB
by:

It’s just a taillight for gods sake! 588221



- ST8RB
by:

Replaced my old lights and everything works like new again. 586175



- ST8RB
by:

GREAT PRICE 583627



- ST8RB
by:

Fast shipping, great price, high quality lens, what else can I ask for? 582502



- ST8RB
by:

east to install 582087



- ST8RB
by:

Great price for a basic trailer light. Nice that it equipped with a side light. 581990



- ST8RB
by:

This light was delivered quickly and was everything as advertised. Great light . 580166



- ST8RB
by:

The product was exactly what I was looking for. I installed it the same day I received it, and it worked fine. 579445



- ST8RB
by:

Just what I needed; good price. 577496



- ST8RB
by:

Items just as described at a reasonable price. All received in good condition. Thanks 575548



- ST8RB
by:

Outstanding product. Very easy to install. I’m about to order another pair for another trailer. 575246



- ST8RB
by:

Delivery was quick, installation was easy. Nice product. 572667



- ST8RB
by:

Item did exactly as expected 570960



- ST8RB
by:

I worked with a very helpful Optronics employee to determine the correct light to replace a smashed right taillight on my small utility trailer; she recommended I then order from etrailer. It's a perfect, inexpensive match for the destroyed light, and installed quickly and easily. 570908



- ST8RB
by:

Just a tail light for my trailer. It was the very same light. Quick and easy and a good price. Thanks, Bob 567804



- ST8RB
by:

Great customer service. Prompt response to replace the broken tail light on my Carry On trailer. Exactly what I needed. 566514



- ST8RB
by:

Great replacement, good quality, and pr ice. 566405



- ST8RB
by:

All good appreciate the help 564645



- ST8RB
by:

The light was an exact fit, easy to install and still working a year later. I will look for etrailer the next time I need any lighting for a trailer. 564011



- ST8RB
by:

Great product & great service!! 550340



- ST8RB
by:

Replaced broken tail light. 546219



- ST8RB
by:

Easy to install, arrived fast and works great. 544236


51
356
Show More Reviews

Ask the Experts about this Optronics Trailer Lights
Do you have a question about this Trailer Light?


  • Installation of Bulb in Optronics Trailer Light
  • The Optronics Trailer Light # ST8RB for the right hand side and # ST9RB for the left has a shockproof socket for the bulb to insert into. The replacement bulb is # A1157B.
    view full answer...

  • Locating Left Side Assembly for Optronics Trailer Light # ST8RB
  • The Optronics Trailer Stop, Turn, and Tail Light # ST8RB referenced in your question is for the right side of the trailer. For the corresponding Left Hand assembly, you will just need part # ST9RB, which also includes the needed license plate light. These are really nice, red square trailer lights that are corrosion resistant and feature a replaceable lens and bulb. I have attached a couple short video demonstrations on these lights, along with an installation video that you might find...
    view full answer...

  • Preferred Method of Grounding Trailer Lighting Circuits
  • Running a direct ground up to the trailer tongue or junction box would certainly work, but the only time I'd see that as being necessary is if the lamps were connected to a non metallic structure or a metallic structure that wasn't directly connected to the trailer frame. If the lamps aren't connected to a metal structure in direct contact with the trailer frame, you can use a short length of # DW02359-1 wire with a # DW05702-1 ring terminal on each end to serve as a jumper wire that joins...
    view full answer...

  • How to Connect Trailer Wiring to Optronics # ST8RB and # ST9RB Trailer Tailllights
  • If you have the Optronics # ST8RB and # ST9RB, no connector is needed. On the back of the taillight, there is a hole for the stop/turn and a hole for the running light wire. Each of these holes will have a smaller hole directly below it. Strip back the insulation on the wire by about a 1/4 inch, twist the copper strands of each wire tightly and push it into the hole in the back of the lamp as you're pushing a small screwdriver into the smaller hole. Once the wire is fully inserted, remove...
    view full answer...

  • Comparing the Power Draw of LED Trailer Tail Light STL8RB and Incandescent Version ST8RB
  • LED lights draw considerably less amperage than incandescent lights. They also run much cooler. These 2 features are why LED lights last so long. The incandescent version of # STL8RB is # ST8RB and it draws 2.5 amps for the stop/turn signal functions and 1 amp for the running light functions. And the LED version draws 0.259 amps for stop/turn functions and 0.062 amps for running light functions.
    view full answer...

  • Utility Trailer Light Wiring Diagram and Required Parts
  • I have attached two basic trailer light wiring diagrams of utility trailers for you to check out. The difference between the two diagrams is the type of wiring harness that is being used. Diagram 1 shows a traditional wiring layout with jumper wires to provide running light functions for both sides of the trailer and Diagram 2 shows a wishbone harness. The wishbone harness has two running light wires, one for each side of the trailer. Diagram 2 is the preferred method and it is more common...
    view full answer...

  • Is the Optronics Tail Light # ST8RB Compatible with 3 Wires for Trailer Light Functions
  • The Optronics tail light part # ST8RB that you referenced actually doesn't come with any wiring at all. The back of the assembly has holes in it for quick connecting of your light functions. Simply insert the stripped wire into the appropriate slot. This is the passenger side light assembly. For the driver's side assembly you will need part # ST9RB. Attached are some reviews videos and an installation video for you to reference.
    view full answer...

  • How to Wire Optronics Right-Hand Trailer Stop, Turn and Tail Light, Part # ST8RB
  • The Optronics Right-Hand Trailer Stop, Turn and Tail Light, Part # ST8RB, connects with two wires. On the rear of the housing are holes to accept bare wire and underneath each one is a smaller hole that serves as a wire release; just insert a small pin (or something like a paper clip) to release the wires. The left-hand matching light is part # ST9RB. If you refer to the included photo illustrating a trailer-side 7-way connector you will be able to see which two wires from the connector...
    view full answer...

  • Is Bulb Already Installed on Trailer Stop, Turn and Tail Light
  • Yes, the Trailer Stop, Turn and Tail Light, 6-Function, Right Hand # ST8RB does come with the bulb installed. The matching light for the left side of your trailer is the Trailer Stop, Turn, Tail and License Plate Light, 7-Function, Left Hand # ST9RB, which also has the bult installed.
    view full answer...

  • Recommended Replacement Trailer Lights With Side Lights For Small Utility Trailer
  • We have just what you are looking for. I recommend the LED Submersible Trailer Stop, Turn and Tail Light, part # STL8RB. This is for the right side of the trailer and is a stud mounted LED light. It has the side marker light that illuminates when the running lights are powered. For the left side of the trailer you will want part # STL9RB. I have attached a product review video and have also attached a drawing that shows the dimension for these lights you can take a look at.
    view full answer...

  • Is There More than One Bulb in Optronics ST8RB and ST9RB Trailer Lights
  • For the trailer lights # ST8RB and # ST9RB there is only one bulb inside the housing and it is a 1157 like you mentioned. For a replacement you would want the part # A1157B. The light from the one bulb lights up the side and the front of the assembly.
    view full answer...

  • Can the Optronics Tail Light # ST8RB Be Used on the Left and Right Side of a Trailer
  • You should not have a problem using the Trailer Stop, Turn and Tail Light, 6-Function, Right Hand # ST8RB on the left and right hand sides of your trailer. It would be just a matter of wiring up the lights accordingly. On the # ST8RB there is an arrow that points to a wiring hole with the word Green. On the right side of your trailer this will be correct, but on the left side of the trailer you would need to install the yellow wire there.
    view full answer...

  • How To Connect Optronics Trailer Lights # ST8RB and # ST9RB To a Trailer
  • The quick connect feature on the Optronics Light, part # ST8RB, and part # ST9RB, means that you can connect the wires by inserting them into the four holes on the back of the light. It is not referring to a separate part. The wires would be stripped about 1/4 inch and pushed into the correct hole on the back of the trailer light. The holes are marked with the tail light function that the hole provides. The wire when pushed in the hole will automatically lock in place and give you a...
    view full answer...

  • How Is Trailer Wiring Connected to the Optronics Trailer Lights # ST8RB
  • Stripped wire get inserted into the ports on the back of the Optronics Trailer Lights # ST8RB and that is how they are connected. Fast forward to the 2:15 mark of the video I attached to see how this is done.
    view full answer...

  • Can the Bulb in Trailer Stop, Turn and Tail Light ST8RB Be Easily Replaced
  • The bulb # ST8RB trailer tail light can definitely be replaced, and to do so is not difficult. The face of the light taken off by removing four small screws, and once this is done you have access to the bulb socket and can proceed with changing the bulb. The replacement bulb for this light would be part # A1157B.
    view full answer...

  • Difference Between Optronics Left Hand # ST8RB and Right Hand # ST9RB Trailer Lights
  • It sounds like you are referring to the Optronics Right Hand Trailer Light # ST8RB and the Left Hand # ST9RB. The only difference between the two assemblies is that the Left Hand/Driver's Side unit features an additional license plate light to illuminate the trailer's license plate. I have attached a couple short video demonstrations on these lights that you can also check out.
    view full answer...

  • Do Trailer Lights have to be Grounded to the Main Trailer Connector Ground
  • As long as each of the lights on your trailer are grounded to a clean, bare metal surface then you will be good to go. On aluminum trailers though sometimes a jumper ground does need to be run to the main trailer connector ground. But not with steel frames.
    view full answer...

  • Troubleshooting Trailer Running Lamp Circuit on 2005 Ford F Series
  • I am assuming you are speaking of the 7-way trailer connector. Use a circuit tester like part # 40376 on the pin in the 11:00 position on the trailer connector. If you do not have voltage on that pin while the headlights or running lights are on, you most likely have a blown fuse. The lid of your fuse box should have a legend showing which fuses protect which circuit. This information should also be provided in your owners manual. The fuses might not necessarily be located in the...
    view full answer...

  • Installation Method for Optronics 6-Function Trailer Stop, Turn and Tail Light # ST8RB
  • The Optronics 6-Function Trailer Stop, Turn and Tail Light # ST8RB that you referenced does not require a bracket for installation. This light is of the type that uses the two threaded mounting studs, spaced 2-inches apart, to attach to your trailer. These mounting studs also serve a second purpose; they provide the ground connection to complete the electrical circuit. Please refer to the linked video. Certainly if you wanted to mount these with a bracket you could use a simple L-bracket...
    view full answer...

  • Testing Trailer Wiring for Function to Troubleshoot Both Blinkers Turning on at the Same Time
  • On the Trailer Stop, Turn and Tail Light, 6-Function, Right Hand, # ST8RB, the back is labled, the brake light and turn signal wire (usually green) goes in the left connectors. The taillight wire (usually brown) goes in the right connectors. It sounds like the right turn signal wire is somehow connected to both turn signals. If your trailer wires have different colors, or the colors do not match the functions described above, you will need to use a circuit tester, like # ALL640595,...
    view full answer...

  • Availability of Replacement Lens for Do-Ray 169
  • I was not able to find any specifics about lighting products from Do-Ray, nor one for a lens with the reference number 169. If you can submit a photo of the part you need along with measurements I'll be glad to check for a replacement. If you prefer you can choose a new light fixture using the link provided. The link will take you to our main page for trailer lights where you can use the filters in the left margin to narrow the results shown based on the color, shape and type of light...
    view full answer...

  • Side Marker Bulb for Peterson Trailer Tail Light
  • The side marker bulb on your light is likely going to be a 194 bulb, # A194B. If this bulb does not look like the bulb you are trying to replace you can check for a model number on the light housing or email me some pictures of it and I might be able to identify it. For an 1157 bulb we have # A1157B.
    view full answer...


Do you have a question about this Trailer Light?




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Info for this part was:

Expert Research:
Michael L
Expert Research:
Sarah L
Expert Research:
Patrick B
Expert Research:
Michael H
Expert Research:
Jameson C
Updated by:
Adele M
Expert Research:
Adam R
Updated by:
Laura H
Updated by:
Sarah W
Updated by:
Brian T

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