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Wesbar Low Profile Trailer Tail Light - Submersible - 8 Function - Incandescent - Driver Side

Wesbar Low Profile Trailer Tail Light - Submersible - 8 Function - Incandescent - Driver Side

Item # 403026
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Wesbar Low Profile Trailer Tail Light - Submersible - 8 Function - Incandescent - Driver Side Stop/Turn/Tail,Side Marker,Rear Clearance,Side Reflector
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8" x 2-13/16" Rectangle. Waterproof, incandescent trailer tail light serves 8 functions for trailers over 80" wide: stop, turn, tail, side marker, clearance, side reflector, rear reflector, and license plate light. Stud mount. Lowest Prices for the best trailer lights from Wesbar. Wesbar Low Profile Trailer Tail Light - Submersible - 8 Function - Incandescent - Driver Side part number 403026 can be ordered online at or call 1-800-940-8924 for expert service.
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Wesbar Trailer Lights - 403026

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

8" x 2-13/16" Rectangle. Waterproof, incandescent trailer tail light serves 8 functions for trailers over 80" wide: stop, turn, tail, side marker, clearance, side reflector, rear reflector, and license plate light. Stud mount.


  • Incandescent trailer tail light serves 8 functions on trailers over 80" wide
    • Stop, turn, tail, clearance, side marker, rear and side reflectors
    • Built-in license plate light illuminates trailer license plate
  • Built-in reflex reflector removes the need for a separate reflector
  • Sealed, waterproof housing and lens unit is submersible
  • Replaceable capsule protects bulbs against corrosion and thermal shock
    • Incandescent bulbs can be easily replaced
  • Durable ABS housing and acrylic lens
  • Screw-on lens over incandescent bulb
  • Compatible with 12V DC systems
  • Stud mount with included hardware
  • 3-Wire design
  • DOT compliant


  • Configuration: driver side
    • Passenger side: 403076 (sold separately)
  • Dimensions: 8" long x 2-13/16" tall x 2-13/16" deep
  • Distance between mounting studs (center on center): 2"
    • Screw size: #8-32 x 1/2"
  • Bulb type: 1157 and 193
  • Wire gauge: 18
  • Limited 1-year warranty

Wesbar Combination Tail Light Dimensions

Note: Light is sealed but does not have a replaceable capsule (like older generations). Only need to change light bulbs (# 1157; # 193). Replacement light bulb # 1157 (A1157B) sold separately.

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.

403026 Wesbar Low Profile Trailer Combination Tail Light - Submersible - 8 Function - Incandescent - Rectangle - Driver Side - Left Hand

California residents: click here

Customer Reviews

Wesbar Low Profile Trailer Tail Light - Submersible - 8 Function - Incandescent - Driver Side - 403026

Average Customer Rating:  4.8 out of 5 stars   (313 Customer Reviews)

8" x 2-13/16" Rectangle. Waterproof, incandescent trailer tail light serves 8 functions for trailers over 80" wide: stop, turn, tail, side marker, clearance, side reflector, rear reflector, and license plate light. Stud mount.


Main taillight burned out after about a year. I submerged the trailer perhaps 10 times during that time (Boat trailer) but I was still a bit disappointed given that it looked like things were sealed up well inside the light. On the positive side, the bulbs are replaceable so I had it fixed in 10 minutes.


I ordered a Wesbar 3504 and was shipped 6504. Didn’t think anything about it figuring it was just an update from an old number.
When I went to install it I found there is a hole in the back of the original that isn’t in the replacement. The hole is there to make room for a large bolt on the trailer.
I have already prepared the harness for my particular trailer, so I don’t think it’s returnable.

Both the updated version of the Wesbar lamp, part # 403026 and its Optronics equivalent, part # ST17RB
Optronics Combination Trailer Tail Light - Submersible - 8 Function - Incandescent - Driver Side
are submersible lamps, meaning that they are sealed to prevent intrusion. Unfortunately, we dont have a similar lamp that features a hole like whats shown in your photo. I believe at this point your best bet would be to take a die grinder or Dremel type rotary tool and recreate that hole in the back of the new lamps. If you decide to go that route, be sure to unplug the trailer connector before backing the boat into the water, and letting the lamp drain before plugging the trailer back in.
-- Etrailer Expert Mike L - 09/15/2018


Was exactly like the original light and fit properly with the exception that the wiring was not color coded correctly. The box stated that the white was ground, the black was tail, and red was stop and turn. The light had a white, yellow, and brown wire.


They were not waterproof and I had to replace both lights. Warranty wasn't worth the postage.


Great product, fast shipping, Carol even followed up the day after the tail lights were delivered to make sure they were the right part.
Recommend these guys !00%!

David F - 01/13/2022


Just what we needed. The customer service with this company is the BEST I have ever found. They are knowledgeable and so very couteous!!!!!! I would highly recommend if you have a trailer need then call etrailer. You will be very pleased!!!!!!

Five stars, Great product and company!!!!
Judy P - 08/29/2021


This company sells high quality products at a very reasonable price. They are quite fast on fulfilling your order and it always right.

Works perfectly
Steven T - 09/06/2021


The Wesbar low profile lights were a direct replacement on my 1998 Nitro trailer. They were fairly easy to install, rewiring takes most of the for the installation since old wiring must be cut and spliced to new wires on lights. One thing to note; most of the wiring diagrams I found depict the trailer to have green, brown and white wires, my Nitro has red, brown and white. Not a big issue but something that made do a little more checking before I did the permanent wire splicing. Trailer lights look just like they did from the factory and work fine.


Very nice light. It was a very close factory replacement. All I had to do was connect the correct wires to the corresponding light circuit. Probably 45min repair time. I allowed extra for a coffee break. The first picture is the replacement. The second picture is the original light.


The light was a easy install and I have had no problems with it.


Excellent product and excellent service. Replaced the lights on a boat trailer I recently bought that had similar lights but were the sealed type that did not have a provision to change the bulbs, these are the same brand and are sealed but do allow the bulbs to be replaced if needed. The web site for is excellent as is the service.


Perfect fit, easy installation, comparable pricing, and well made product.


I was very aggrevated that I had to replace the whole unite when only the bulb was blown. The old bulb was completely sealed and everything had to be tossed out. Who ever designed it must of been a novice engineer. The new unit apparently allows for just bulb replacement which makes a lot more sense. I had to put it lower on the trailer plate as there is a 5/8 in nut and bolt sticking out of the plate for no apparent reason. the old unit had a hole in it to accommodate this protrusion. It works fine but I had no place to the extra wire after making the connection. They are now crushed and cramped between the trailer plate and the unit.


I bought both the left and right side trailer lights for my Nitro trailer. They fit perfectly! These lights do not come with the the 3-way molded connector that plugs right into the trailer wiring. I purchased heat shrink splice connectors (for 22 to 18 gauge wire) along with liquid electrical tape to attach my lights. Everything works great.

Kudos to etrailer for the speedy delivery!

My trailer lights are still working great! No problems with them whatsoever. Thank you.
-- comment by: Henry V - 03/28/2014


Exactly what I needed. Timely shipping and great price!

Absolutely perfect!
William S - 11/10/2021


This review is about service. Yes, the replacement tail lamp assembly and quick-splice connectors were shipped on time at a fair price. BEFORE they were ordered, however, my call was promptly answered and Sal M. walked me through ordering the proper components, and helped confirm I was indeed ordering the correct replacement part. He then went on and helped diagnose the problem with the left tail-lamp and confirmed I was ordering the correct part. He also provided valuable insight into the debug of a clearance light problem. This is the second time I've purchased from ETRAILER, and each time I do so I have received outstanding service from the phone team, products that work, and fair pricing with on-time delivery.

All good, all working fine. Kudos to etrailer for advice and products :
Dave G - 04/12/2018


Got exactly what I ordered, at the price ordered. Replaced the trailer light yesterday. I'll be back when necessary!


The light mounted perfectly however it would be nice if they provided the needed butt connectors to complete the install.


These fit and work perfectly as replacement for the older style that didnt have replaceable bulbs

Etrailer shipped super fast too

Woking great
Ron M - 05/09/2015


Exact replacement for the original, working perfectly.


This is the third time I have purchased lights for my boat trailer over the years and the service has been outstanding. Follow up from the vendor has been quick and informative. I have always received exactly what I ordered and the quality is what I expected. Delivery has not been and issue, everything delivered in the time line promised.

Completely satisfied, the product works perfectly.
Pete - 11/11/2017

Completely satisfied, the product works perfectly.
Pete - 11/11/2017


Needed a driver side boat trailer light. Best price, and delivered on time. Website provided the best search options,unlike big box or other web sites. Second time using this site.


I have an older Ranger Boat trailer. Ranger's part dept. no long has these replacement lights available. Happy to discover that etrailer still offers these quality lights (at a great price)!

One year later and no problems with trailer lights.Thanks again etrailer! I wish more businesses were so customer friendly.Al W.
Al W - 01/05/2015



I received the light and was just what I needed. Thank you so much for the quick response and your concern.
jimbo s - 06/17/2016


This soldier received both tail lights for my Stratos (2000 model). However, the starboard side tail light doesn’t function. So, I guess I will reorder this product since I received a malfunctioning tail light.

I am a first time customer. My overall experience is disappointing

In order to troubleshoot your malfunctioning taillight, we need to determine if the light is at fault or if the trailer wiring itself is causing the problem. The quickest and easiest way of doing this is to pull the lamp off the drivers side of the trailer and temporarily install it on the passenger side and attach the wiring. If the lamp works, youve confirmed that the lamp was bad. If the lamp you moved still doesnt work, the wiring is defective and needs repairing. Ill link you to our FAQ article that explains how to troubleshoot your trailer wiring. To see the article, just click the provided link. If you confirm that the lamp is indeed faulty, please let me know.
-- Etrailer Expert Mike L - 03/19/2018
Show More Reviews

Ask the Experts about this Wesbar Trailer Lights

  • Can LED and Incandescent Lights Be Mixed on Boat Trailer
    It is certainly possible to use both LED-type and incandescent-type lighting at the same time on a trailer but I recommend you stick to one type or the other. LEDs are roughly 10-times as efficient as the incandescent type bulbs, and this means that in certain cases (depending on the number and placement of the lights within the overall trailer wiring) if you mix them you could find that some of the lights will be substantially brighter than others. The exact way the trailer is wired will...
    view full answer...
  • How to Pick out Replacement Bearings for Tracker Boat Trailer
    The best way to find the correct replacement bearings is to get the numbers stamped onto the metal of the inner and outer bearings that are currently on the trailer. If you cannot read those numbers your other option is to measure the spindle of your trailer with a micrometer to get the diameter of it where the seal, inner, and outer bearings ride. See picture. I have included a link to a video on inspecting trailer bearings that should help you when removing the old bearings.
    view full answer...
    Image 1 for
  • Wesbar Trailer Taillight to Replace Wesbar 3504
    Yes, the type of light that the 3504 is matches the Wesbar # 403026.
    view full answer...
  • Bolt Dimensions of the Wesbar Submersible Low Profile Trailer Light # 403026
    The Wesbar Submersible Low Profile Trailer Light, # 403026, uses bolts that require a 1/4 inch diameter hole to mount. The distance between the mounting holes is 4 inches on center and the bolts are 1 inch long.
    view full answer...
    Image 1 for
  • Will Wesbar Trailer Taillight Part Number 403026 Replace Light on 2005 Karavan Trailer
    The correct replacement taill light you need is the part # 403026 which can easily be wired to what you have now. The white wires will match from where the white wire of your old assembly ran, the red wire will be the stop/turn circuit and the black will be the running lights.
    view full answer...
    Image 1 for
  • Reverse Lights On Trailer Stop Working After Switching To LED
    If the backup lights on your trailer have stopped working since you have installed LED then most likely your lights are not grounded properly or you have a loss of power on the reverse light circuit. If you test the reverse circuit wire for power before it reaches the light that should tell you if you have a connection issue or poor ground. If you get power on the reverse circuit wire just before it reaches the lights then you know you have a bad ground but if not then you most likely...
    view full answer...
  • Can Trailer Lamps Approved for 80 Inch Wide Trailers Be Used on Trailers Under 80 Inches Wide
    Trailers that are over 80 inches wide require additional lighting over and above what is required for trailers under 80 inches in width. Although the lamp you referenced, part # 403026 is rated for trailers over 80 inches wide, it can certainly be used on trailers that are under 80 inches wide. The over 80 or under 80 rating will have no bearing on the wiring connections. For this particular lamp, the white wire would ground to the trailer frame, the brown wire would connect to the running...
    view full answer...
  • Replacement Trailer Taillight Assembly Recommendation for 3348 Capsule that Has Blown on Trailer
    The 3348 is a Wesbar capsule that is no longer available. What you would need instead is the part # 403026 for the left hand side and/or part # 403076 for the right hand side.
    view full answer...
  • Replacement Trailer Taillights for a 1997 Ranger Trail Trailer
    Since you said the bulb is encased that makes me think you have a light like the part # 403026 for the left side or part # 403076 for the right side. I couldn't find any pictures online of your trailer but if what you have looks different email me back and with a picture and I will find you a replacement.
    view full answer...
  • Wesbar Submersible Trailer Tail Light # 403026 Recommendation
    You are correct, the light you have is very similar to the Wesbar Submersible Low Profile Trailer Tail Light # 403026. However, it is a different light as you noticed by the lens cover screws. Dimensionally they are similar yet still slightly different. The # 403026 is slightly bigger, but depending on your trailer it might still work for your application. The dimensions are 8 inch Wide x 2-7/8 inch Tall x 2-9/16 inch Deep for this tail light. I would check your trailer to make sure this...
    view full answer...
  • How To Remove Older Wesbar Submersible Low Profile Trailer Tail Light
    It sounds like you are trying to remove your older Wesbar Submersible Low Profile Trailer Tail Light from your Ranger Trail boat trailer. These lights are held on to the trailer with 2 studs on the back of the light housing. To remove the lights, you will want to remove the nut on the back of the stud that is holding the light to the trailer. With the nut off of each stud, you will be able to pull the light off of the trailer. You will also need to detach the wiring to completely uninstall...
    view full answer...
  • Replacement Wesbar Right Tail Light
    The Wesbar Submersible Low Profile Trailer Tail Light # 403076 is the right tail light as Wesbar Tail Light # 403026 is a left tail light. You will want the Wesbar Submersible Low Profile Trailer Tail Light # 403076 to replace your current right side trailer tail light. This is an exact replacement. If you are looking to replace both taillights, you will want to use the Wesbar Submersible Low Profile Tail Light # 403026 for the left side. I attached a review video of the Wesbar Tail...
    view full answer...
  • Installation Side of Wesbar Submersible Low Profile Trailer Tail Light
    The Wesbar # 403026 is the driver's side light so when looking at the trailer from the back it will be on the left side. The easiest way to tell is to look for the reflector. The side that the reflector is on should be located to the outside of the trailer for better visibility. The passenger side or right side light from the back of the trailer will be # 403076. I have linked the above mentioned products to this page for your viewing and purchasing convenience.
    view full answer...
  • Are Replacement Capsules Available for Wesbar Submersible Lights?
    Unfortunatley we no longer carry that particular replacement capsule. It may be a good idea to simply replace the lights with something that has parts which are more easily obtainable and likely less expensive. If you decide to go with new lights, the Wesbar Submersible Tail Lights you would need are # 403026 and # 403076.
    view full answer...
  • Replacement Wesbar 102640 Trailer Light Assemblies
    Your Wesbar 102640 trailer light features a sealed capsule so the bulb itself cannot actually be replaced. I recommend simply replacing the light assemblies with the Wesbar # 403026 and # 403076. These are the newer/current generation model lights to what you currently have. They measure 8 inches wide, 2-7/8 inches tall, and 2-9/16 inches deep. The mounting hardware is included and they do feature a sealed, waterproof construction. When needed, the bulbs on these assemblies can be easily...
    view full answer...
  • Installation and Troubleshooting Wesbar Replacement Lights and Right Turn Signal Not Functioning
    The Wesbar # 403026 is considered the left hand side, the drivers side, or roadside. The Wesbar # 403076 is for the right hand side, passengers side or curb side. It should not matter which one is installed the wiring to the replacement trailer light is not side dependent. The only difference between the two is that the left hand side # 403026 has a clear section under the light that also functions as a license plate illuminator. If the turn signal on the right hand side is not functioning...
    view full answer...
  • Replacement Tail Light Needed for a Kara Trailer Hauling a 2004 Boston Whaler 150 Sport
    I could not find any information on a trailer light with part # 6554-tw, however, I did some research on your trailer and other trailers for the Boston Whaler 150 Sport and it looks like they use the rectangular submersible trailer lights like the Wesbar Low Profile Trailer Light, # 403026, that you referenced. This is the left side light, for the right side light, you will want part # 403076. To determine if these lights will work with your existing light brackets without drilling new...
    view full answer...
    Image 1 for
  • Do Submersible Low Profile Trailer Tail Light Come in Sets
    Wesbar Submersible Low Profile Trailer Tail Light with License Plate Lights are sold separately as part # 403026 (left side) and part # 403076 (right side). Part # 403026 has a clear lens in the underside of the lamp that allows the tail light to illuminate the trailer license plate. I have also included a link to the current light kits that we offer.
    view full answer...
  • Looking for Replacement Wesbar Left-Side Trailer Light # 50010
    I was not able to find a replacement light assembly based on your provided number, 50010. A check with my contact at Wesbar reveals that they no longer have this light product; it was discontinued about 15 years ago. The light was a 4 x 4-inch unit according to my contact. The link provided will take you to our main page for square trailer lights. You can use the filters at the left-hand margin to narrow the results to those items that best meet your needs.
    view full answer...
  • Replacement Trailer Lights for 2003 EZ Load Boat Trailer
    I have a solution for you, but from what I was able to find out the old Wesbar lights on your trailer cannot have the bulbs replaced on them because of the clear plastic cover and red gasket you mentioned in your email. You will be able to use the Wesbar # 403026 (driver's side) and # 403076 (passenger side) to serve as a replacement. These are 8 function lights that are fully submersible to safely function on your boat trailer.
    view full answer...
  • Replacement Trailer Taillight Solution for Wesbar Trailer Taillights 102640/12641
    The Wesbar 102640 and 102641 light assemblies feature a sealed capsule that cannot actually be replaced. Because of that your best option is to replace the light assemblies. The current version of this light is the Wesbar # 403026 for the driver side and # 403076 for the passenger side. I have attached an installation video on this light that you can also check out.
    view full answer...
  • Driver Side Taillight that Matches Wesbar # 403076
    The driver side light that matches the Wesbar part # 403076 is the part # 403026. I attached an install video for this light for you to check out as well.
    view full answer...
  • Availability of Replacement Capsule for Wesbar 102640 Light
    The Wesbar 102640 light assembly features a sealed capsule that cannot actually be replaced. Because of this your best option is to simply replace the light assembly itself. The current version of this light is the Wesbar # 403026 for the Driver Side and # 403076 for the Passenger Side. I have attached an installation video on this light that you can also check out.
    view full answer...
  • Passenger Side Wesbar Low Profile Trailer Tail Light - Incandescent
    We do have the passenger side to match the Wesbar Low Profile Trailer Tail Light - Incandescent - Driver Side # 403026. The matching light is the Wesbar Low Profile Trailer Tail Light - Incandescent - Passenger Side # 403076. This light only has 7 functions because the driver side has a license plate light, which of course is not needed on the passenger side.
    view full answer...

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