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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 Combination Trailer Tail Light - 6 Function - Incandescent - Red Lens - Passenger Side Red ST8RB
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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.
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  • Reviews (386)
  • Q & A (29)
  • Videos (3)
  • Photos
  • Why etrailer?

Optronics Trailer Lights - ST8RB

  • 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.


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   (386 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:

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 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:

The light is a well built taillight and works great. The service at etrailer is always great.... as well as fast, easy and delivered quickly. What a great place to get all your trailer needs. Thank You! 728805



- ST8RB
by:

Excellent Response...quick delivery 725075



- ST8RB
by:

The order was accurate and fast delivery. The product was great and did not require additional connectors. Just strip wire and put push in. Had lights installed in no time. Would order again if needed new trailer lights. 721963



- ST8RB
by:

Great product and shipped fast 718154



- ST8RB
by:

Seems like a good product. Prompt delivery and reasonable price for both the product and shipping. 717793



- ST8RB
by:

Awesome product came in new without any scratches looks and works great on my trailer easy install quick to change out and simple design 716258



- ST8RB
by:

Great price, good product. Great customer service. Thank you 714230



- ST8RB
by:

They WORK!! After trying to retro-fit some old taillights I had laying around, I bought and installed these on my trailer. I should have my head examined for not starting out with these lights for the solution to my situation. 713763



- ST8RB
by:

Have them about a year now on small bike trailer and have been great. No trouble nice bright lights 713245



- ST8RB
by:

This is a very nice product. It arrived in a reasonable time frame, based on the shipping that I paid. I was very pleased with the customer service when I called and asked a question. And the price was much lower than I expected to pay. 711227



- ST8RB
by:

Good website,Great prices.Item arrived on time and worked correctly.I plan on upgrading in the near future.I reccomend ETrailer.Thank You 706470



- ST8RB
by:

Arid Ed on time perfect profuct 706211



- ST8RB
by:

Looks just like the ones I'm replacing didn't see one marked for left side but I'll just turn one upside down. The came real quick. Great price 703967



- ST8RB
by:

The website is easy to navigate. The product was exactly what I needed and it was shipped quickly with good tracking info. A+ 699091



- ST8RB
by:

Received the light in good condition just as ordered 698705



- ST8RB
by:

Exact replacement at low cost. What a deal. I checked a local town dealer and they wanted [price] for a trailer light package. They didn’t sell the tail/brake lighting separately. etrailer provided me the same lights minus the wiring for a fraction of the cost from the local dealer in town. 695312



- ST8RB
by:

Bought this to replace one that had seen better days. Good quality product. 696591



- ST8RB
by:

Great quality Lights at a Great Price 693295



- ST8RB
by:

worked well 683659



- ST8RB
by:

Great doing business with etrailer the light worked great on my trailer having to replace the left rear light and it matches the one on the left works and looks great 683074



- ST8RB
by:

Exactly as described good quality & fast shipping. I have already referred etrailer to others. 675475



- ST8RB
by:

NO problems. worked well for the intended use on a light duty trailer that gets little use over the year. The internal contacts are a little less robust than I would like but for the intended use it is OK. 674106



- ST8RB
by:

Great product, Great service and very satisfied with my purchase. Thank you!! 673703


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Ask the Experts about this Optronics Trailer Lights

  • 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...
  • 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 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...
  • 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...
  • 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...
  • How to Change Light Bulb in Optronics ST8RB Trailer Taillight
    Changing the bulb is simple. Remove the screw on each corner of the front of the lens and gently pry the lens away from the housing. Be careful not to damage the gasket between the lens and the housing as doing so will allow water into the interior of the lamp. With the lens removed, you can push in on the bulb and twist it clockwise then pull the bulb free. Install the replacement # A1157B bulb in reverse order..
    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...
  • 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...
  • 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...
  • 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...
  • 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...
  • 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...
  • 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...
  • 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...
  • Using a Circuit Tester to Find Taillight Functions on a 1985 Ford F-250
    I actually do have a diagram that you can look over to help with wiring trailer lights and the 4-Way wiring harness. I have included a link to the page below. The best way to find the functions of the wires on the 1985 Ford F-250 is to use a circuit tester like # 40376. You will need to test the wires behind each taillight for function. Behind the left taillight, the wire that carries a signal in unison with the blinker connects to the yellow wire on a 4-Way harness. This also carries...
    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...
  • 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 # 40376, to find...
    view full answer...
  • Running Lights Function but Brake and Turn Do Not on a 2006 Carlson Utility Trailer
    It could definitely be a ground issue. Since you were able to duplicate the same result with the same trailer on two different vehicles, than it is pretty safe to say the problem is somewhere on the trailer. I would start with the trailer connector and work back. Trace the ground wire, usually white, back from the connector. Make sure it has a good clean connection to the metal of the trailer frame. Paint, rust and corrosion can insulate connections so make sure it is good metal to metal...
    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...
  • When Should My Trailer Lights Be Working
    When the vehicle is not running and the key is in the off position, the only functions that should be working on your vehicle and trailer will be the headlights and tail lights as they are not tied into the vehicle's ignition system. If you vehicle's brake lights come on when the brake is applied, then your trailer brake lights should come on as well. It is likely the turn signals will not function while the vehicle is not running and the key is in the off position. When the vehicle is...
    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...
  • 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...
  • 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...
  • Can Redline Light Guard be Used with Optronics ST8RB and ST9RB Tail Light Assemblies
    The Redline Light Guard # LG440NP referenced in your question is designed to fit the Peterson Square Trailer Tail Light # 432400 and # 432200, however it can also fit other tail light assemblies. The Optronics Tail Lights # ST8RB and # ST9RB that you also mentioned feature very similar dimensions to the above Peterson assemblies and will absolutely work with the Redline Light Guard. The guard itself has an inside dimension of 5-1/2 inches wide, 5 inches high and 3 inches deep. This will...
    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...
  • 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...
  • Replacement Taillight Recommendation for Tumbleweed Cyprus Trailer
    Thanks for the picture of your trailer and taillight. From that I can tell you'd need the replacement passenger side trailer taillight part # ST8RB.
    view full answer...

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Info for this part was:

Expert Research:
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Expert Research:
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Expert Research:
Patrick B
Expert Research:
Michael H
Expert Research:
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Expert Research:
Adam R
Updated by:
Adele M
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