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Optronics Combination Trailer Tail Light - Submersible - 8 Function - Incandescent - Driver Side

Optronics Combination Trailer Tail Light - Submersible - 8 Function - Incandescent - Driver Side

Item # ST17RB
Our Price: $18.82
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Shipping Weight: 0.76 lbs
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8-1/16" x 2-7/8" Rectangle. Waterproof incandescent light acts as brake, tail, turn, side marker, side reflector, rear clearance, rear reflector, and license plate light for trailers over 80" wide. Stud mount - includes hardware. Great Prices for the best trailer lights from Optronics. Optronics Combination Trailer Tail Light - Submersible - 8 Function - Incandescent - Driver Side part number ST17RB can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (138)
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Optronics Trailer Lights - ST17RB

  • Tail Lights
  • Rectangle
  • Incandescent Light
  • Red
  • 8-1/16L x 2-7/8W Inch
  • Surface Mount
  • License Plate
  • Rear Clearance
  • Rear Reflector
  • Side Marker
  • Side Reflector
  • Stop/Turn/Tail
  • Submersible Lights
  • Optronics

8-1/16" x 2-7/8" Rectangle. Waterproof incandescent light acts as brake, tail, turn, side marker, side reflector, rear clearance, rear reflector, and license plate light for trailers over 80" wide. Stud mount - includes hardware.


  • Rectangular incandescent tail light serves 8 functions on trailers over 80" wide
    • Stop, tail, turn, side marker, side reflector, rear clearance, and rear reflector
    • Built-in license plate light illuminates trailers license plate
  • Sealed, waterproof construction is submersible
  • Built-in reflector removes the need for a separate reflector
  • Incandescent 2057 bulbs can be easily replaced
  • Shockproof socket guarantees long bulb life
  • Durable plastic housing
  • Red acrylic lens
  • Compatible with 12V DC systems
  • Stud mounts to trailer with included studs
  • 3-Wire design hardwires to trailer
  • DOT compliant


  • Configuration: driver side
    • Passenger side: ST16RB (sold separately)
  • Dimensions: 8-1/16" long x 2-7/8" tall x 2-13/16" deep
  • Distance between mounting studs (center on center): 2"
  • Bult type: 2057
  • Power draw at 12.8V:
    • Stop/turn: 2.3 amps
    • Tail: 0.9 amps
  • 3-Year warranty

Manufacturer Cross Reference
Light will work as an exact replacement for:
Wesbar # 3504
Peterson # M456L

Optronics ST17 Series Combination Tail Light Dimensions

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 circuit board is sealed, which means that water will not damage the diodes or circuit board.

Combination Lights for Trailers Over 80" Wide

Flatbed trailer over 80" wide with combination tail lights

If a trailer is 80" or wider at its widest point, then it requires rear clearance lights in addition to basic trailer lights. These clearance lights indicate the width of the trailer when it is viewed from the back.

To meet these requirements on a flatbed utility trailer where the bed extends past the wheels, you can install combination trailer lights that include the rear clearance function. For proper mounting, the lights must be installed at the widest points on the rear of the trailer - one on each corner.

ST17RB Optronics Marine Combination Tail Light - Submersible - 8 Function - Incandescent - Driver Side - Left Hand

Alternate part number: ST-17RB

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Optronics Combination Trailer Tail Light - Submersible - 8 Function - Incandescent - Driver Side - ST17RB

Average Customer Rating:  4.8 out of 5 stars   (138 Customer Reviews)

8-1/16" x 2-7/8" Rectangle. Waterproof incandescent light acts as brake, tail, turn, side marker, side reflector, rear clearance, rear reflector, and license plate light for trailers over 80" wide. Stud mount - includes hardware.


Carol C!! Very disappointed!! No nuts and bolts ho attach to trailer!! Had to cut off old ones so have none!! Also I m pretty sure when I went on line to inspected viewer and order there was a 2 plug in harness on wires which I wanted to continue water proof wire protection.?? Unhappy with product!!


The two trailer lights came in and work but were not the exact same. Both were the same size but one light was only half as bright as the other and one had a window at the bottom to light up the road below it and the other one didn't. You should make sure both are exactly the same model.

Etrailer Expert

Jenny N.


You mentioned that one light was brighter than the other and I had a question that I wanted to ask. Is one light brighter than the other on a specific function? I recommend checking the grounds on the lights and the wiring as that may be affecting it. If that does not help, please contact us. You also mentioned that one light has the clear light at the bottom. This light is meant to illuminate the license plate and this is why is it not included with the passenger side light.


George J was very helpful suggesting an alternative to our order, since what we had ordered was not available for a while. Instead, we got what we needed very fast. Thank you George.


I just saw this the other day. Still making the kind of light it should when it should. Easy install and still works after all this time.


Fast shipping, part arrived as predicted. The lights fit the application perfect. Great ordering experience, customer rep was very friendly and helpful. Definatly reccomend order from etrailer. *


You sent the wrong light. there was a note taped to the light with item st17rb
but it was not for the driver side but the passenger left side. I can tell by the bolt slot would be up side down to use on the right side of the trailer. on the left side the slots are right side up and the side reflector is located on the outside of the trailer. if i did the slots up on the driver side the reflectors are on the inside of the trailer. Also i didn't receive any nuts or screws with this order. the light did not come in any other box than what it was shipped in. it looked like it was a return item on a shelf and someone put
an hank written item number on it not knowing if it was a left or right side light. i'm keeping it in case i need it for one day for the left side. i'm not order another from you folks. i'll look else where in a shop to be sure i get the correct light i need.

Etrailer Expert

Jenny N.


I will have our Customer Service team reach out to you.


Patient with me and extremely helpful.


I had to replace my boat trailer lights on my 1995 Sea Ray boat trailer. These were the perfect replacement lights for the matching of the existing ones. The mounting holes lined up perfect, no drilling required, just remove the old and install the new.
It took more time to connect the wires on each side than to mount the new lights.
etrailer had these to me in three days, and there were exactly as described and many choices to pick from. I don't use the boat all that much, If it were newer and I used the boat more I would have went with the LED model. Again and as usual etrailer was top shelf on the shipping and the price!! Thanks folks, I'll be back again.


Great service by Carol of etrailers. Product is exactly what was needed.


Exact type of part needed to replace broken light...without purchasing set


I spoke to Noah about a rear trailer light to replace one destroyed by debris on the highway. The trailer was 12 years old but Noah found the replacement for the light that was laid to waste. This gentleman is patient and worked to satisfy my purchase situation.


Does not match the other tail light I ordered. Had been opened before, was dirty and missing bolts to attach to the trailer

Etrailer Expert

Katrina B.


You are correct, the two lights you had ordered do not match. For the drivers side light to go along with the part # STL14RB that you ordered you would want the part # STL15RB. This is the matching light you are looking for.


It was a direct replacement that bolted right on.



Still is working well and looking good.


The tail light was an exact replacement for the original light and I received it in just a few days. It has worked as good as new since with no problems. I appreciate the follow-up too.



Its a new season and the light is working as well as when new.


It was great to finally find a place that would have a trailer light for my 2005 Trailstar trailer.


Accidently crushed one of my boat trailer lights, so ordered a new one from When I received it. it looked strange as the lens on the right one looked different than the left on the original pair. I initially was skeptical that it would work but after installation it worked fine. A note..the trailer is from 2005-2007 so the design my optronics may have changed. Having said all that. I would never order anything for my trailers except from The folks there are great. The best thing is that almost anything you order, there is a video to tell you how to install it...what to look out for when installing...a lot better than having to guess or at best find a relevant YouTube video....


Needed replacement tail lamps for cruiser
lift motorcycle carrier, etrailer delivered as promised with the correct product. Paula, representative for etrailer is great to work with and helped immensley to match an exact replacement making the entire replacement a snap. Have ordered multiple items from this company and have never encountered any difficultites with ordering, delivery or products offered.


these taillights were just what I expected. they did the job of replacing my old taillights.



still working just fine a year later


Wow this is the most amazing company I have ever dealt with on line. I ordered 2 tail light fixtures for my boat trailer and I needed them quickly so I paid the 2 day shipping fee and I didn't receive them for like 6 days. So I told them I thought I should get a refund on the freight, oh and bye the way the fixtures were perfect and exactaly what I had ordered. This sweet lady said she would refund me the difference between regular shipping and my 2 day shipping and she did. As it ended up I got them soon enough that I got the trailer ready to roll when I was supposed too afterall. So will tell everyone I know to shop etrailer for any thing they need if they like being treated great. THANKS AGAIN ETRAILER


Very similar to the original trailer light and lens. Unit came with wires only, no three wire plug. Had to wire old plug on to the new unit to use with the trailer.


i had a right light(itemst16rb) and i needed a left one (item st16rb)
i am putting tail brake and turn lights on a rack that fits into a 2in.
trailer hitch on my yukon thought it was a good idea
the right lite was one i purchased in 1993. i tried localy with no luck to
find a match for a left lite had no problem ordering one from E TRAILER


Installed easily in place of the old lights and wiring was simple. Will come back If I have occasion to need trailer lights again.


Tail lights came quickly and are working great. They were exactly the same as the originals. Thank you etrailer!

Roger T.


Trailer lights still working well. Like them a lot just what I needed. Thank you.


This is my first time with etrailer it was awesome tail light for my tracker boat trailor was just what I needed works perfect and the fast shipping was awesome,easy to do business with will be ordering again no problems DID I SAY AWESOME HAPPY HAPPY


This is my first time with etrailer it was awesome tail light for my tracker boat trailor was just what I needed works perfect and the fast shipping was awesome,easy to do business with will be ordering again no problems DID I SAY AWESOME HAPPY HAPPY

Show More Reviews

See what our Experts say about this Optronics Trailer Lights

  • Replacement Side Marker Lens for Wesbar Light on Long Trailer
    I could not find anything on a Wesbar light item 60011 so either this number came from just the lens (which is not the light's actual part number; that would be on its base) or the light is old enough to be discontinued. In any case we carry all sorts of replacement lenses for trailer lights that you can see on the linked page. Appropriate replacement lenses can be viewed by clicking on the lens shape then the lens color. For instance, for a red side marker lens for light models # ST16RB...
    view full answer...
  • Is Mounting Hardware Included with the Optronics Trailer Tail Light, # ST17RB
    I went out to the warehouse and pulled an Optronics Tail Light, # ST17RB. The mounting hardware is included with the light. The bolt heads actually fit into the slots on the back of the light and you tighten them on using the included nuts.
    view full answer...
  • Will The Optronics Trailer Light, # ST17RB, Fit Inside The Frame Of A Leland Trailer
    The Optronics Trailer Light, # ST17RB, is an exact replacement for the Wesbar # 3504 and the Peterson # M456L lights. I do not have a list that will tell me if this light will fit your Leland trailer. You will need to look on the light you have now and see if there is a part number that might match the Wesbar or Peterson number. If you can give me the serial/model number and manufacturer of your existing light assembly, I can find if there is an exact replacement. If you want to measure...
    view full answer...
  • How Do you Wire in 3-Wire Trailer Tail Lights on a 1999 Nitro 700LXB Trailer
    Virtually any three-wire tail-light assembly would work for you, since this is a boat trailer you will want to use a light assembly that is submersible. You will just need to wire the new tail lights in to your current wiring, mount the tail light and you would be good. The Optronics Trailer Light # ST16RB that you referenced would work for you. It would be the right hand side light and you would just wire it in by color and you would be good to go. For the left-hand side you would want...
    view full answer...
  • Correct Replacement Taillight for Trail Star Boat Trailer
    In order to replace the taillight on a Trail Star Trailer you'd simply find one with the same style (shape/function) and then choose the correct replacement based on size. There are several types of Trail Star Trailers so it would be difficult to offer an exact replacement without knowing what you have but most of their boat trailers use a light similar to the Optronics Combination Trailer Tail Light part # ST16RB for passenger side and part # ST17RB for driver side. These feature a two...
    view full answer...
  • Replacement Trailer Taillight Assemblies for 2015 Grizzly 1754 SC
    I looked up pictures of your 2015 Tracker Grizzly 1754 SC and it appears to have the trailer taillights part # ST36RB for the right hand side and the part # ST37RB for the left hand side.
    view full answer...
  • Replacement Tail Light For Trail Star Boat Trailer
    We have exactly what you are looking for. The replacement light we offer that will work for you is part # ST16RB. This is listed as an exact replacement for the Wesbar 3554 light on your trailer, which is the passenger side of the trailer. if the light you need is for the driver side of the trailer and has the license plate light then the light you need is part # ST17RB.
    view full answer...
  • Replacement Tail Light for 1995 EZ Load Sea Ray Boat Trailer
    Thank you for providing that information. Based on that information you have a Wesbar 3504 light and the direct replacement is the Optronics Combination Trailer Tail Light - Submersible - 8 Function - Incandescent - Driver Side # ST17RB. This is the one with the built-in license plate light. If you end up needing to replace your passenger side light as well we also have the # ST16RB available. I have attached a review and installation video for your reference.
    view full answer...
  • Will the ST17RB Over 80 inch Rectangular Submersible Trailer Tail Light Fit on a LoadRite Trailer
    I did some research online and found that the LoadRite trailer very well could use a light like the Over 80 inch, Rectangular Submersible Trailer Tail Light, # ST17RB (left) or ST16RB (right). LoadRite uses several different styles of light and have recently gone to LED lights on many of their boat trailers. If your trailer is newer and has LED lights you would most likely need the, # STL17RB and # STL16RB, lights to replace the original lights. I pulled the # ST17RB light and did a short...
    view full answer...
  • Left and Right Trailer Tail Light Recommendations, # ST16RB and # ST17RB
    Yes, we have a right and left hand trailer tail light that you described. For the left hand side you would want a Over 80 inch, Rectangular Submersible Trailer Tail and License Light, 3 Wire, 8-Function, Left Hand, part # ST17RB. For the right hand side you would want a Over 80 inch, Rectangular Submersible Trailer Tail Light, 3 Wire, 7-Function, Right Hand, part # ST16RB. Both of these tail lights are 3-wire systems, 2 power lead wires and 1 ground wire.
    view full answer...
  • Looking for Replacement Lights on an Older Pontoon Trailer with Wesbar 3504 Lights
    Though I do have direct replacements for the lights, this style of plug is no longer used. With that being said, the Optronics Combination Trailer Tail Light - Submersible # ST17RB will replace your driver side light and # ST16RB will replace your passenger side. However, both of these lights will have bare wires on the end so they can be spliced into your current wiring.
    view full answer...
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  • Replacement Trailer Light Recommendation to Replace a Wesbar 3504
    The Over 80", Rectangular Submersible Trailer Tail and License Light # ST17RB that you referenced is an exact replacement for the Wesbar 3504 light you have so it would work perfectly for you.
    view full answer...
  • Replacement Tail Lights for Optronics A1STP2 93 on 2005 Trailstar Trailer
    We have both an LED and incandescent option for equivalent replacement lights on your 2005 Trailstar trailer. If you want incandescent lights then you can use the # ST16RB for the passenger and # ST17RB for the driver side. For LED lights you can use the # STL16RB for the passenger and # STL17RB for the driver side. I have attached some review and installation videos for your reference.
    view full answer...
  • Replacement Tail Light for 2000 TrailStar Bass Tracker Pro Boat Trailer
    I looked up some photos of a 2000 TrailStar Bass Tracker Pro Boat Trailer and it most likely uses either the Optronics Combination Trailer Tail Light part # ST16RB for passenger and part # ST17RB for driver side or the Optronics Combination Trailer Tail Light part # ST8RB for passenger side or part # ST7RB for driver. Unfortunately, you'd have to replace the entire tail light as we'd not have just the lens.
    view full answer...
  • Is Wire Removal Required when Replacing the Wesbar 3504 Tail Light
    If you are replacing your Wesbar 3504 tail light then there is no need to remove the wiring from inside the assembly itself. A replacement light, like part # ST17RB for the left hand or part # ST16RB for the right hand, will come with its own wiring that you will connect to the wiring on your trailer. A review video and an installation video have been linked for you to reference.
    view full answer...
  • Can Optronics Trailer Taillight # STL14RB Replace 102640
    The Optronics trailer taillight part # STL14RB does use the same mounting style as your Wesbar 102640 so it would easily fit in place of it. Or for a non-LED version you would want the part # ST17RB.
    view full answer...
  • Replacement Trailer Lamp Needed for Part # ST17RS
    For the right side tail light assembly, use part # ST16RB. Part # ST17RB is the assembly for the drivers or left hand side. These will be an exact replacement for what you currently have. The ST17RS is the same light, sold individually. ST17RB is sold in bulk, which is how we purchase them. Each assembly has a lead for the brake/directional, a lead for the running lights and a separate ground wire.
    view full answer...
  • Water Gets Into Boat Trailer Taillights and Blows Fuse
    You've hit the nail on the head. When the water is in the taillights assembly, it shorts the power supply circuit to ground causing you to blow fuses. I've seen folks drill a drain hole in the lowest point of the underside of the lamp housing, but your best course of action is to prevent the water from getting in there in the first place. The best fix would be to replace the existing lights with submersible ones, like the # ST17RB and # ST16RB. These lamps are sealed to keep water completely...
    view full answer...
  • Replacement Waterproof Boat Trailer Tails Lights and Switching from Incandescent to LED
    You were on the right track with the Optronics LED Combination Trailer Tail Lights - Submersible - 40 Diodes - Driver and Passenger Side # TLL160RK, which are a completely sealed light housing so they're waterproof as opposed to submersible lights. These lights do come as bare pigtail wires, but there are twist connectors included in the kit to allow you to make the connections to the trailer wiring. With that said, when it comes to mixing LED and incandescent lights on your trailer, it...
    view full answer...
  • Replacement Lens for Wesbar Lens Part 102641
    The Optronics Trailer Tail Lights # ST16RB (right) and # ST17RB (left) are direct replacements for Wesbar lights 3554 and 3504. The Wesbar part 102641 is actually a replacement lens, which we do offer as # 102641. The complete Webar light that replaces 3554 is # 403026 and for 3504 it is part # 403076.
    view full answer...
  • Does Optronics Tail Light Lens A90RB Include a Clear Portion for a License Plate Light
    This lens is meant to be used as a replacement to the Optronics tail light, part # ST90RB. It does not have a clear portion for a license plate light. You are looking for a light like Optronics part # ST9RB or part # STL9RB. You could also use Optronics part # ST17RB. I have linked to these parts below.
    view full answer...
  • Replacement Tail Light Lens Needed for a 2000 Tracker Trailstar Boat Trailer
    Although I am not able to look anything up by your boat trailer VIN I did search the internet for your specific boat trailer and it looks like most of the 2000 Tracker Trailstar boat trailers have light assemblies that look like the Optronics # ST17RB. We do have replacement lens for this assembly but it would be up to you to determine if these will fit or not. Part # A39RB is for the main face while part # A37RB is for the side marker portion. I have attached photos giving dimensions...
    view full answer...
  • Replacement Bulbs for Optronics # ST16RB Taillight
    The Trailer Light Kit you referred to uses an # ST16RB and a # ST17RB taillight, which use a 1157 replacement bulb which we offer as part # DI79VR .
    view full answer...
  • Installation of Replacement Trailer Lights on Boat Trailer with Multiple Ground Wires
    If a trailer is made of aluminum rather than steel it will sometimes need ground jumper wires on each light since the aluminum frame does not always provide enough conductivity. Steel frame trailers can usually do with just one main ground wire that connects between a clean bare metal spot on the frame and a wiring junction box like # 38656 where all the individual lights' grounds will join it. Junction boxes can still be used on steel frame trailers, especially when it comes time to...
    view full answer...
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