bing tracking image
  1. Trailer Lights
  2. Optronics
  3. Tail Lights
  4. Rectangle
  5. Incandescent Light
  6. Red
Optronics Combination Trailer Tail Light - Submersible - 7 Function - Incandescent - Passenger Side

Optronics Combination Trailer Tail Light - Submersible - 7 Function - Incandescent - Passenger Side

Item # ST16RB
Our Price: $15.13
You Save: 40%
Trailer Lights
Shipping Weight: 0.75 lbs
Add to cart
In Stock
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

Need help with installation?
Locate installers near me
8-1/16" x 2-7/8" Rectangle. Waterproof incandescent light acts as brake, tail, turn, side marker, side reflector, rear clearance, and rear reflector for trailers over 80" wide. Stud mount - includes hardware. Great Prices for the best trailer lights from Optronics. Optronics Combination Trailer Tail Light - Submersible - 7 Function - Incandescent - Passenger Side part number ST16RB can be ordered online at or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (182)
  • Q & A (0)
  • Photos

Optronics Trailer Lights - ST16RB

  • Tail Lights
  • Rectangle
  • Incandescent Light
  • Red
  • 8-1/16L x 2-7/8W Inch
  • Surface Mount
  • 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, and rear reflector for trailers over 80" wide. Stud mount - includes hardware.


  • Rectangular incandescent tail light serves 7 functions on trailers over 80" wide
    • Stop, tail, turn, side marker, side reflector, rear clearance, and rear reflector
  • 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
  • Pre-wired design includes power and ground wires
  • DOT compliant


  • Configuration: passenger side
    • Driver side: ST17RB (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"
  • Bulb 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 # 3554
Peterson # M456

Optronics ST16 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.

ST16RB Optronics Combination Trailer Tail Light - Submersible - 7 Function - Incandescent - Passenger Side - Right Hand

Alternate part number: ST-16RB

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Optronics Combination Trailer Tail Light - Submersible - 7 Function - Incandescent - Passenger Side - ST16RB

Average Customer Rating:  4.9 out of 5 stars   (181 Customer Reviews)

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


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.


It worked perfect on my trailer . Thanks


Lights are a perfect fit replacement for old lights of the identical type. Four day std delivery was right on time. Installed and working fine.



Its been a year and many dips in the lake and the boat trailer lights are still burning bright.


Light was just as described, fitted perfectly. no problem when submersing the trailer.


Couldn't find an extact match for my SeaRay trailer, but these adapted
very easily. Om & connected in minutes. Very nice.


Replacement light for a customers trailer. perfect fit


Worked perfect in by our trailer.


I was looking for a replacement taillight/brake light for my boat trailer. When I clicked on I was impressed with the site and with all of the products and information offered. It was easy to navigate their site and the product info was great. My taillight/ brake light works great and was an exact fit. Very pleased with the whole experience and will order from them again.

John W.


So far so good.


Very nice product.


Finally got my order for the tail light working with Steph. There had been some sort of ordering mix up at the time of paying thru P ay Pal. I thought that the order was just VERY slow, Steph tracked it down, and the order was never finalized - ?? She then helped me reorder - paid $2.99 for lowest shipping on 6/20, got the tail light on 6/25 (in northern Illinois) - wonder how fast the expensive delivery would have been!! Thanks the Steph for all her help!!! By the way, the light looks perfect, just like the original on the trailer from the dealer.

Curt R.


Great - fit perfectly - still works


Fast,cheap,and exactly what I needed.


Good price, item as described, fast and reasonable shipping.


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


Product a new right boat trailer light. Website easy to use, and ordering was easy. Received an email when it was shipped. My new trailer light arrived on time. Exact replacement for broken right taillight. Thanks, etrailer for your great service. Definitely order again



Consistent Quality Excellent Service life.


I find etrailer to have the trailer parts that are sometimes difficult to locate. Good product descriptions, with details and pictures ensure you are getting exactly what you need. Good prices, quick shipping and excellent customer service makes me always check etrailer first when I require parts for my boat trailer. I have bought several items from etrailer and have always been completely satisfied.

Stan R.


No problems whatsoever...good as new. Keep selling quality products.


Britney kept looking till she fount lights that would fit


This is exactly what I wanted to rep-lace a broken light on one of my vehicles. The price was reasonable, and the light was delivered before promised.


The first tail light I received was broken in shipping, which does not reflect on the quality of the unit. sent a replacement promptly, so I was pleased about that.

One problem I had was the mounting slot spacing is 1/4" different from the original lights I had, even though they both use the same lenses. I guess there is no industry standard for mounting holes on these. I had to re-drill the mounting holes in my bracket to make them fit.


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.


Last year I had a teenager learning how to back up with a trailer. This is how I came to need one replacement light. etrailer had a matching replacement light at a good price, and it arrived quickly and well packaged. That light is now starting its second season and is working well. I appreciated the wealth of information that is available on the website, and I found those resources very helpful. This year I have another teenager who needs to learn about trailers, so when the inevitable happens, I'll be back to etrailer!


This is my second order from and the reason is the first order went so great. I had ordered some taillight lenses to replace some I had broken on my boat trailer, but when I finally got around to installing them, I discovered the box to which the lenses were to be screwed was damaged also and thus I had to replace the entire unit. I had initial difficulty finding the unit(my confusion..not the website's) so I emailed a question and received a prompt and CORRECT reply. This because these folks know their stuff. I promptly ordered the unit and it was shipped immediately. and was received in 3 days. I haven't actually installed it yet because the warehouse where I keep my boat is so hot, but I opened the package and quickly checked the unit against the damaged one and it is a perfect match. I am sure I will need to order such items again and I plan to ALWAYS ORDER FROM ETRAILER.COM!!


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. *


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


We had our pontoon boat trailer in a storage lot. Somehow (no one knows) the right tail light lens was broken out. Luckily we were able to find a replacement on at a good price and shipping was reasonable. I had originally gone to the Tennessee trailer website. The replacement light was a reasonable price but their cheapest shipping was almost $24. Over twice the cost of the replacement light. shipped FAST. We will definitely buy from them again.


I bought replacement trailer lights about a year ago. Timely arrival, easy installation. and they have worked great. I will definitely order from again if I need ANYTHING for my trailers.

Show More Reviews

See what our Experts say about this Optronics Trailer Lights

  • Diagnosing Malfunctioning Lamps on Trailer Towed by 2008 Toyota Highlander
    Since you have tested the trailer with a different vehicle, and everything seemed to work okay, it would seem that you have ruled out the trailer as being the problem. You have tested the trailer connector, and have found that each pin on the connector is showing power when its function is activated, which would usually rule out the vehicle. I would first suspect the ground connection for the trailer connector on the Highlander. Trace the white wire and locate the point where it grounds...
    view full answer...
  • Trailer Running Lights Go Out After Short Time Towing Trailer with a 2009 Toyota Highlander
    This sounds like a possible ground problem or dirt/corrosion in the trailer side or vehicle side connectors. Ground issues can be fixed by checking the trailer connector and trailer light grounds and making sure they are attached to clean and corrosion free bare metal surfaces. On the trailer connector pins you can use a sharp tool or wire brush small enough to fit and clean out the dirt and corrosion if present. You can also check to see if the running light power draw is close to or...
    view full answer...
  • Replacement Bulb for Boat Trailer Signal Light
    To find the right replacement bulbs, we will need to know what lights you have. You will want to take the lens off and check the housing of the light itself. Many times you can find the number for the light on the back of the light itself. The bulb number which may or may not be printed on the bulbs themselves or on the light housing somewhere.
    view full answer...
  • Right Brake Light Works when Brakes Applied on Trailer but Turn Signal Does Not
    I suspect the problem is a poor ground connection either on the trailer or with the vehicle side trailer connector. A poor ground is often the culprit when certain light functions work sometimes but not all the time. The first step I would take is to check all of the ground connections for the vehicle side trailer connector, trailer side connector and for each of the trailer lights, including the marker lights and the license plate light. The ground wires should be attached to a clean,...
    view full answer...
  • How to Loosen and Remove Hardware Holding Wesbar Taillights
    You can try using a penetrating spray solvent product like WD40 or PB Blaster on the frozen nut/bolt to see if it can dissolve the corrosion holding them together. These solvents can take time to work and it may take multiple applications with waiting time in between. The other way to go is to use a bit of brute force and simply cut and/or drill out the fasteners. From your description it sounds like you will need to get a drill and a drill bit made for metal to allow you to remove the fastener.
    view full answer...
  • Is Optronics Trailer Light, # ST16RB, Waterproof and Corrosion Resistant
    The Optronics Trailer Light, # ST16RB, is waterproof and corrosion resistant and rated for boat trailer applications. This light is an exact replacement for Wesbar # 3554 or Peterson # M456. If you happen to find one of these numbers on your existing lights somewhere, this is the correct replacement light. I recommend, if possible, to turn off the lights for a long enough period to allow them to cool before backing into the water. The sudden temperature change could cause lighting components...
    view full answer...
  • Does Ground of Trailer Taillight # ST16RB Need to be Waterproof
    The ground wire of the # ST16RB does not need to be waterproof. Since this attaches directly to exposed metal of the frame of the trailer it would be pointless for it to be waterproof.
    view full answer...
  • Is a Light Bulb Included with Optronics Over 80 Inch Submersible Trailer Tail Light Part ST16RB
    Yes, there is a light bulb already installed in the Optronics ST16RB light.
    view full answer...
  • Availability of Replacement Submersible Tail Lights for a 2003 Ranger Trailer
    To get the correct replacement submersible tail lights for your 2003 Ranger trailer I would need the part number off the lights on your trailer now or the shape (round, rectangle, oval, and square) and dimensions of the lights you have. The part number I would need would be on the light itself not the part number that is on the lens. I am including a picture that will show the dimensions that are needed to match up the correct lights for your trailer. The Optronics Submersible Trailer...
    view full answer...
    Image 1 for
  • Why Would Trailer Right Stop Light Circuit Stop Working
    If the right side brake light is still functioning then it's not a bulb issue. Since the stop light is working it has something to do with the trailer wiring on the tow vehicle. Most likely a converter box is at fault. If you get me the year/make/model of your vehicle I can see what we have as a replacement.
    view full answer...
  • Does Optronics Over 80 Inch Rectangular Submersible Light Include any Mounting Hardware
    Yes, the Optronics Over 80 Inch Submersible light includes two bolts with lock nuts for mounting.
    view full answer...
  • Replacing Bulbs in Submersible Trailer Lights.
    On the # ST16RB trailer taillight, the lens is first removed by removing the 4 screws holding the lens to the lamp housing. Once the lens is removed, the 2057 bulb is easily removed by pushing the bulb into the socket, and twisting it a 1/4 turn, then pulling straight up.
    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 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...
    Image 1 for Image 2 for
  • Replacement for Wesbar Passenger Side Taillight
    The Wesbar light that the replacement lens # 102641 you were looking at fits has been discontinued. The company that bought Wesbar has been getting rid of a lot of their lights so it is unlikely you will find it. However, the Optronics Combination Trailer Tail Light # ST16RB will work as a replacement. This light has the same dimensions at 8-1/16" long x 2-7/8" tall x 2-13/16" deep. We also have the driver side # ST17RB if you would like to replace the pair.
    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...
  • How to remove Tail Light Capsule From Submersible Trailer Taillights
    If you have a newer model Wesbar Submersible Low Profile Trailer Tail Light, item # 403076, there are screws on the inside of the housing securing the clear capsule to the light housing. Removing these screws will allow you to remove the clear capsule cover and replace the bulbs. When the clear capsule is replaced an o-ring seals the bulb. You would not need to remove the assembly from the trailer. If you have an older Wesbar Submersible Low Profile Trailer Tail Light then you would need...
    view full answer...
  • Troubleshooting Stray Voltage in 2009 Toyota Highlander Factory Trailer Wiring Harness
    Your Toyota Highlander's factory wiring should include a converter found under the dash of your vehicle. It sounds like your trailer may have caused an issue with your converter. If this is the case, I recommend using the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118449 which will give you the 4-way wiring harness, but also the converter for under your dash.
    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...

Do you have a question about this Trailer Light?

Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Robert G
Expert Research:
Robert G
Employee Patrick B
Expert Research:
Patrick B
Employee Michael H
Expert Research:
Michael H
Employee Jeff D
Expert Research:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee John H
Expert Research:
John H
Employee Adam R
Expert Research:
Adam R
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Adele M
Updated by:
Adele M
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
Wilson B
Employee Brian T
Updated by:
Brian T
Employee Dustin K
Video Edited:
Dustin K

At 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.

Product Experts Available Now!
Call 1-800-940-8924