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Aero Pro Combination Trailer Tail Light - Waterproof - 7 Function - Incandescent - Passenger Side

Aero Pro Combination Trailer Tail Light - Waterproof - 7 Function - Incandescent - Passenger Side

Item # ST36RB
Our Price: $18.66
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Shipping Weight: 0.92 lbs
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ST36RB - Red Optronics Trailer Lights
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7-7/8" x 3-1/4". Low-profile incandescent light serves 7 functions: brake, tail, turn, side marker, side reflector, rear clearance, and rear reflector. Shock proof sockets protect bulbs. Stud mount. 3-Wire design. Great Prices for the best trailer lights from Optronics. Aero Pro Combination Trailer Tail Light - Waterproof - 7 Function - Incandescent - Passenger Side part number ST36RB can be ordered online at or call 1-636-306-4830 for expert service.
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Optronics Trailer Lights - ST36RB

  • Tail Lights
  • Rectangle
  • Incandescent Light
  • Red
  • 8L x 3W Inch
  • Surface Mount
  • Stop/Turn/Tail
  • Side Marker
  • Rear Clearance
  • Side Reflector
  • Rear Reflector
  • Submersible Lights
  • Optronics

7-7/8" x 3-1/4". Low-profile incandescent light serves 7 functions: brake, tail, turn, side marker, side reflector, rear clearance, and rear reflector. Shock proof sockets protect bulbs. Stud mount. 3-Wire design.


  • Red, rectangular trailer light serves 7 functions for trailers more than 80" wide
    • Stop, Turn, Tail, Rear Clearance, Rear Reflex, Side Marker, Side Reflex
  • Aero Pro design delivers contemporary styling
  • Sealed, waterproof housing and lens unit
  • Built-in reflector removes the need for a separate reflector
  • Incandescent bulbs are easy to replace
  • Shock-proof sockets protect bulbs against damage
  • Durable plastic housing with screw-on lens
  • Compatible with 12V DC systems
  • Stud mount to trailer with included hardware
  • 3-Wire design hardwires to trailer
  • DOT compliant


  • Configuration: passenger side
    • Driver side: ST37RB (sold separately)
  • Dimensions: 7-7/8" long x 3-1/4" tall x 2-7/8" thick
  • Distance between mounting studs (center on center): 2"
  • Bulb type; 1157
  • Number of bulbs: 2
  • Power draw at 12.8V:
    • Stop/turn: 2.3 amps
    • Tail: 0.9 amps
  • 3-Year limited warranty

Manufacturer Cross Reference
Light will work as an exact replacement for:
Wesbar # 3571

Optronics ST36RB Waterproof 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.

ST36RB Optronics Aero Pro Combination Tail Light for Boat Trailers Over 80" Wide - Waterproof - 7 Function - Incandescent - Rectangle - Passenger Side - Right Hand

Alternate part number: ST-36RB

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Aero Pro Combination Trailer Tail Light - Waterproof - 7 Function - Incandescent - Passenger Side - ST36RB

Average Customer Rating:  4.9 out of 5 stars   (518 Customer Reviews)

7-7/8" x 3-1/4". Low-profile incandescent light serves 7 functions: brake, tail, turn, side marker, side reflector, rear clearance, and rear reflector. Shock proof sockets protect bulbs. Stud mount. 3-Wire design.


It was a good fit. Had to modify the connection just a bit because of the age of the trailer but basically a bolt on & plug in. Works as advertised and have had the boat trailer in the water several times with no leaks & no shorts.

Trailer taillight replacement is still working good...... No issues
Greg S - 09/30/2022


Great product. Absolutely no issues after 1 year of use in saltwater.


Replaced my boat trailer light. Good match and fit.


Worked out real well


Exactly what I ordered and in a reasonable time.


Purchased to replace broken lights on my boat trailer. They fit perfectly using previous mounting holes. Electrical connections straight forward. Left hand unit contained illumination for license plate.


This was a direct replacement for a broken tail light on my Tracker TrailStar 17' trailer. I spliced it into an existing harness. Looks and works great. I would say that it is resistant to water damage when submerged. Its not water proof however.I always disconnect the harness from my truck before putting the trailer in the water.


Nothing too technical about the part itself. A simple swap out of the old parts. Matched the dimensions of the OEM parts so the installation went smoothly. Deliver from etrailer was excellent and prompt. Will definitely continue doing business with etrailer! The best online vendor for providing installation videos and answering technical questions. Keep up the good work!


This was the exact replacement tail-lights that was on my 2016 pontoon boat i was
extremely pleased with the speedy delivery once i made my purchase. i have just completed the installation of both trailer lights and it was not that difficult since it
was a exact replacement. i will definitely be ordering from your company in the future for my replacement boat parts. Also the prices for my purchase's were in line with what i expected.

thanks Joey B.
satisfied customer from Alabama


Product was a perfect fit.


I ordered this trailer light on line My product came in expected and I mounted it that day. I like these trailer lights because they are very bright, even though their not LED, and they are submersible. Can't beat the price.


Couldn't believe how fast my light was shipped out. Everything was received as expected. Great light, fast service... thanks e-trailer.

Awesome! Happy with my purchase!
John D - 01/30/2018


Bought this mainly for the lens to replace a broken one but its good to know I have all of the other parts on hand including spare bulbs if needed. It was a better deal to buy the whole thing than just the lens. The bulbs in this unit are in a water resistant inner enclosure to buy some time before water gets in to the bulbs when launching your boat. Always unplug your lights before backing in the water.


This is not a waterproof product. This is my Second Aero tail Light in less then two years. They get full rust inside the box and the lights go out and I got a ticket.


Perfect match for factory Tracker Trailstar Trailer. Cheapest price I could find. Great product at a great price, will do business with again.


These were a direct replacement for a light on my boat trailer, good fit and work great


Easy Install. Mounts up perfect on my trailstar trailer for my bass buggy. Can’t go wrong on the price, even if it only last 2-3 years.


I ordered new lights for my husband. I was really did not want to do this.
I thought it would take forever and I would need to ask him a lot of
questions. But no, it was very easy, almost took no time at all.
The things I ordered were sent as promised, we received everything quickly.
We were delighted!!!!


Thank you for your quick shipment of my tail light. It is a perfect match for the damaged tail light on my trailer. I will recommend you to anyone requiring your products.


Excellent products as always! Fast delivery and great customer service. That's why I keep coming back to


Tail light was delivered in a timely manner, product was in-stock, no problem with an easy installation. Product info was provided with video support on the etrailer web site.


great ,fast service,tail light came packaged well ,
thanks E-TRAILER!!!


This boat trailer tail light was just as described so it was perfect.


worked out ok, but the brand was the tail light not the camper, made it work, thanks


The product I purchased from etrailer was A1 this is my second go round with etrailer I'm very satisfied with your products I will be a repeat customer!!!

Show More Reviews

See what our Experts say about this Optronics Trailer Lights

  • Replacement Rear Light Lens for Boat Trailer
    I would be happy to get you the right replacement lights though the SAE is not a model number, just DOT coding. However, based on what we know about other customers who have needed similar parts then LED lights # ST36RB and ST37RB are likely going to work for you. These are left and right hand LEDs that are 7-7/8" long x 3-1/4" wide x 2-7/8" tall surface mounted lights. You would need to measure your current lights and if they are the same size then these lights would work great for you....
    view full answer...
  • How to Find Light Part Number on Four Winns Boat Trailer
    Trailer makers don't usually keep track of the brand/model of lights used in trailer production and the numbers you took from your light's broken lens are not part numbers, but rather DOT coding. The light's base is likely to have the part number printed on it so you can check there for a brand and/or part reference. Once you find that you can type it into our search box. If you cannot find that information you can still review the replacement light lenses we offer which are shown on the...
    view full answer...
  • Availability of Optronics ST36 Trailer Taillight
    We do have the Optronics Aero Pro trailer taillight you are looking for with the part # ST36RB which is the right hand side.
    view full answer...
  • Recommended Replacement Trailer Stop, Turn and Tail Light for an Optronics ST-36
    Although the # STL36RB light you referenced is the same size and shape as the other ST-36 Optronics lights, it is an LED light. The ST-36 by itself would have a standard bulb. If you need a replacement light with the standard bulb, you would use # ST36RB. To install either version of the light, you will need to cut off the plug and connect the wires from the light directly to the trailer wiring. You can view a standard trailer wiring diagram at the included link if you need it for reference.
    view full answer...
  • Looking for LED Version of Optronics ST36RB Trailer Taillight
    We do indeed offer an LED equivalent as part # STL36RB. The # STL36RB is a 17-diode taillight that offers stop/turn/running lamp functions and is for use on the passenger side of the trailer. I've linked to an install/demonstration video that you might find helpful.
    view full answer...
  • Replacement Trailer Light for a 2006 Tracker Boat Trailer with the Optronics ST-36 RH Tail Light
    The light on your Tracker boat trailer is the right hand ST36 series trailer light from Optronics as is the # ST36RB, that you referenced on our website. They are essentially the same light, but Optronics has been known to make slight changes to their lights from time to time. I have attached a diagram of this light showing its dimensions for you to check out. The dimensions should not be much different from your light if at all, but the important dimensions to look at are the 2 inch...
    view full answer...
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  • Matching Light Assembly to Go With Part # ST37RB
    The part # ST37RB that you have is designed to be used on the driver side of a trailer, or left side, of the trailer. If you wanted the matching assembly to go on the other side of the trailer you would want the part # ST36RB as well. Realistically either light could go on either side of the trailer.
    view full answer...
  • Replacement Taillights For Trailer With SAE AP2 04 DOT Number
    The SAE number is not a reliable way to find a replacement light for the trailer. From our experience the replacement light is Optronics tail light part # ST36RB for the passenger side or part # ST37RB for the driver's side. These lights measure 7-7/8" long x 3-1/4" tall x 2-7/8" thick and have the Stop, Turn, Tail, Rear Clearance, Rear Reflex, Side Marker and Side Reflex functions. I have attached a diagram of the mounting dimensions so you can compare your lights. I do recommend to make...
    view full answer...
    Image 1 for
  • Replacement Light Recommendation For Left Side Of Trailstar Pontoon Trailer
    The replacement light assembly for your Trailstar Pontoon boat for the left side is part # ST37RB. This is a submersible light that features the tail light functions and the license plate light as well. I have attached a drawing that shows the dimensions of the light you can check out.
    view full answer...
    Image 1 for
  • Can the Optronics ST36RB Right Hand Light Be Used on the Left Hand Side of the Trailer
    If you have a separate bulb to illuminate the license plate, the # ST36RB could be used on the left side.The difference between the # ST36RB light and the # ST37RB is that the # ST37RB has a license plate light to illuminate the trailer's license plate. To mount the # ST36RB on the left hand side may require some modification to fit your application.
    view full answer...
  • Does Aero Pro Trailer Tail Light For Driver's Side Come With Studs For Mounting
    Yes, the mounting studs and nuts are included with the Aero Pro incandescent trailer tail light. Keep in mind the studs will be 2" apart on center, so make sure that matches how your current lights mount. The part number you mentioned was for the driver's side, but I'll go ahead and list out the part numbers for both the driver's and passenger's side in case you need both. - Driver's Side: Aero Pro Combination Trailer Tail Light # ST37RB - Passenger's Side: Aero Pro Combination Trailer...
    view full answer...
  • 2004 Stratos Pro 285 XL Bass Boat Wesbar Tail lights Replacement
    Thanks for the pictures and the numbers. I have a solution for you but the Wesbar tail lights that are associated with lens kit item W003372-73 were discontinued in 2011. The Aero Pro Combination Trailer Tail Light - Waterproof - 7 Function - Incandescent - Passenger Side item # ST36RB and the Aero Pro Combination Trailer Tail Light - Waterproof - 8 Function - Incandescent - Driver Side item # ST37RB are listed as the replacement lights for your Stratos Pro Trailer.
    view full answer...
    Image 1 for Image 2 for
  • Replacement Tail Lights for Tracker Boat Trailer Model # T13PRO175P
    Although we don't have specifics about the specific trailer you have, we absolutely have submersible trailer light replacement lenses that will work for you. From what I can find about similar Tracker boat trailers you may have lights similar to the # ST37RB (drivers) and # ST36RB (passenger) currently, so you can use the # A39RB (front lens) and # A36RB (side lens) as the replacement. If you can send in a photo of the lights and their measurements we can absolutely confirm these will...
    view full answer...
  • What are the Dimensions of the Optronics Lens Part # A39RB
    The dimensions of the Replacement Tail Light Lens for ST36RB and ST37RB, item # A39RB, are 7-7/8 inches Long x 3-1/4 inches Wide. This lens is designed to fit the Over 80 inch, Aero Pro Submersible Trailer Tail Lights, item # ST36RB and # ST37RB.
    view full answer...
  • Replacement Trailer Taillight Lens for SAE STIAP204DOT
    The SAE STIAP2 04 DOT number you provided is a DOT approval number, which states that the lens is compliant with DOT regulations. Because of that, that number isn't typically a good identifier for finding a replacement lens. However, in this case, we previously had a customer send in a photo of this particular lens which we managed to match up to the Optronics part # A39RB which is a replacement for their # ST36RB and # ST37RB taillights or a Wesbar 3571.
    view full answer...
  • How to Determine Correct Replacement Trailer Light Lens or Replacement Light
    The "SAE" on a trailer light isn't actually a part number, it stands for Society of Automotive Engineers and just means it has passed certain testing. The only way to determine the correct replacement lens is with the actual part number of the light, though unfortunately those aren't always readily visible. For example, for parts # ST36RB or # ST37RB you would need the Replacement Tail Light Lens for Optronics ST36RB and ST37RB # A39RB. Without knowing the part number of your light, the...
    view full answer...
  • Replacement Trailer Taillight Lens with SAE STIAP2 04 DOT DOT Number On It
    The SAE STIAP2 04 DOT number you provided is a DOT approval number, which states that the lens is compliant with DOT regulations. Because of that, that number isn't typically a good identifier for finding a replacement lens. However, in this case, we previously had a customer send in a photo of this particular lens which we managed to match up to the Optronics part # A39RB which is a replacement for their # ST36RB and # ST37RB taillights or a Wesbar 3571. The lamp housing should have...
    view full answer...
    Image 1 for
  • Replacement Trailer Tail Light with 3-Wire Plug to Replace Optronics ST-36
    Trailer tail light # ST66RPG should be the light that you will need. It has the 3-wire plug.
    view full answer...
  • Do You Have a Replacment Lens for Optronics Light part STL37RB
    I spoke with my contact at Optronics and they do not have a replacement lens for the LED STL37RB or part # STL36RB. They do have them for the incandescent version, part # ST37RB or part # ST36RB. If you have the incandescent lights, the replacement lens is part # A39RB.
    view full answer...
  • Replacement Passenger Side Boat Trailer Taillight Assembly
    Given the photos you've provided, it looks like the replacement lamp you're needing is part # ST66RPG for the passenger side for an incandescent lamp or # STL36RPG for an LED version. The LED version has a 2 pin plug with a separate ground connection that would ground to the trailer frame, or you could cut the connector off your existing lamp and swap them.
    view full answer...
    Image 1 for Image 2 for Image 3 for Image 4 for
  • Replacement Optronics Rectangle Trailer Light With Plug-In Style Connector
    We do carry rectangular trailer lights that come with the Plug-N-Go connector like the Optronics Right Hand Trailer Light, # ST26RPG, and # ST36RPG. These two lights come with the 2-wire molded connector. If the connector on your trailer has a 3-wire connector, then you may want to look at the Optronics Right Hand Trailer Light, # ST66RPG. I have attached photos showing what the connectors look like. You can also view photos of the trailer lights by following the product links that I have...
    view full answer...
    Image 1 for
  • Replacing a 4-Way Connector with 7 Wires on a 2007 Tracker Trailstar Boat Trailer
    Since this is on a boat trailer the 2 additional white ground wires are ground for the lights. This is fairly common on aluminum frames and boat trailers in general because aluminum is a poor metal for grounds and lights grounded near the tail lights will get dunked in water. The 2 brown wires are both running light wires which allows you to run one wire per side instead of having to run a jumper wire from one side of the trailer to the other. You can still use a 4-Way with wiring such...
    view full answer...
    Image 1 for
  • Recommended Tail Lights for 2004 Toyota Tundra Flat Bed Conversion
    I may have a solution for you, but there are not going to be vehicle specific plug and play lights for this application. I recommend using something like the Aero Pro Combination Trailer Tail Light # ST37RB (driver's side) and # ST36RB (passenger side), which are a 7-7/8" long x 3-1/4" tall incandescent multi-function light (Stop, Turn, Tail, Rear Clearance, Rear Reflex, Side Marker, Side Reflex). These lights can be spliced into your existing tail light wiring using some heat shrink butt...
    view full answer...
  • Tail Lights that Plug In Instead of bare Wires for Trailstar Boat Trailer
    We do have the Optronics ST37 series lights that have the connector instead of bare wires. Aero Pro light # ST37RPG has the plug but just for the running lights, brake, and turn signal wires. The ground is separate. The matching right hand side is # ST36RPG. We also have similar lights for Wesbar, # 271595 and # 271594. I have included some links to video reviews of these light style for you.
    view full answer...

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