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When you need one light that does it all, this Optronics combination trailer tail light covers every base. Measuring 5-3/16" long by 4-9/16" tall, it handles stop, turn, tail, rear reflex, side marker, side reflex, and license plate illumination all in one square housing. It’s built for 12V DC systems and draws 2.5 amps on stop/turn and 1.0 amp on tail. The built-in reflectors mean no separate reflector pieces to mount or maintain, keeping the setup clean and simple.
Rough roads can shake a trailer to pieces, but this light’s shock-proof sockets help keep the incandescent bulbs safe. The socket is designed with some flex to absorb vibration instead of transferring it right to the bulb. That bit of give makes a big difference—reducing the chance of shattered filaments and helping the bulbs last longer even in heavy use.
Installing the ST9RB is straightforward thanks to its quick connect wiring system. Strip about 1/4" of wire, push it into the marked hole on the back, and it locks in place—no soldering needed. Removal is just as easy with a small screwdriver in the release slot. The light grounds through its two mounting studs, spaced 2" center-to-center, so you don’t have to worry about a separate ground wire as long as you’re on clean metal.
Keeping this light working doesn’t require replacing the whole assembly. The lens screws on for access to the two standard incandescent bulbs inside, which are simple to swap out when needed. If you ever crack a lens or need a new cover, replacement parts like lens #A8RB or bulb #A1157B fit right in place. That keeps repairs quick and affordable while extending the life of the fixture itself.
The sturdy red lens covers a durable plastic body that stands up well against corrosion and weather exposure. Designed as a surface-mount unit, it’s ready for regular trailering duty without worrying about water intrusion into non-submersible housings. Backed by a 3-year warranty, it’s a straightforward, dependable choice for keeping your trailer visible and safe on the road.
Customer Satisfaction Score:
100% were satisfied with this product
0% of customers were not satisfied
Ratings & Reviews
Works good
product was shipped and arrived on time. lights were a match for the ones replaced. oem lights had problem with sockets , bulbs would lose contact.
after a year these have work and held up great. I give etrailer a a+ rateing.
web site, price, service and a good company to use AND I WILL CONUINE TO.
Mr Jewell
Product was exactly as advertised. Thank you
Ordered trailer lights for my trailer, easy to order and super fast shipping. Thank you etrailer
Jackie
2/14/2019
Great
Great Product, it's good quality and will fit perfectly for the trailer I use in my Air Conditioning, Heating & Refrigeration Business. The only problem is I ordered the wrong side. Wasn't sure if by the which one was the left or the right? I was looking at the trailer form the front when I determined it was the left one but it appears your suppose to look at the back of the trailer when you do that. Guess I will be ordering the otherside here shortly. Maybe I can get an exchange or if not then I will have a spare and hope if it does get broken again it's the other side. Etrailer has some really good quality stuff at a very good price. I got my hidden hitch from them at a Great Price. They even had a video that showed me how to install it. A couple of the local places here wanted 3 times the amount of what I paid to provide the hitch and install it for me. Will never go anywhere else for any trailer parts or accessories.
needed replacement lights for a road trailer
site had the exact product--price was right--shipping was fast
what more could you ask
Bill B.
4/24/2018
All good
The Igor worked great. I had a heck of a time trying to order lights for the trailer - either not getting the ones I intended getting or mismatched lights. But you came through like me a champ. Thanks.
Jerry
11/7/2023
They are still on and I assume they are still working. Parked the trailer in storage after I put the lights on and have only been out to put the new license plate sticker on.
Ordering the part I needed was very easy. The price was clearly stated, and when I got to the payment men my portion, so were the shipping options. It arrived when promised, and was exactly what I needed. Overall, I had a great shopping experience.
Bobt
8/26/2021
I cant believe its been a year since I ordered this. Weve had a lot of rain this year, and the parts I ordered still look like the originals. Im still very happy with the purchase and would these folks again!
Exactly what I needed to replace broken tail light on my trailer. It was an exact match so was able to salvage some parts from old one ... just in case. As I recall, the price was fair and delivered in good time.
I have no complaints ... only praise.
Would highly recommend.
Bob R.
11/1/2017
Last I used the trailer the signal lights were good as new. Should I need quality replacement parts in the future I would not hesitate to place my order with etrailer again.Thanks for making it affordable and easy.
It’s a light. It fits. It shines.
Great company!
I received my order promptly, unfortunately the box and contents had been smashed during shipping. After contacting customer service via e-mail, e-trailer arranged for a replacement in no time. I will definitely buy from you again when I'm in the market for trailer parts.
Thanks e-trailer!
Rick H.
10/1/2017
After a year of use of our trailer hauling hay, we moved and used our trailer for some of our belongings, 1700 miles in the rain, and all the trailer lighting still works perfectly. Thanks again etrailer.
etrailer.com had exactly what I needed. I bought a replacement for a broken trailer stop, turn, tail and license plate light for my bar-b-que trailer and it matched the other side perfectly. It was packaged very well. I'll be a repeat customer.
Larry H.
4/1/2015
I am still very happy with my light.
Lights were a perfect replacement for existing (busted) trailer lights. These lights did not contain wires, but had well-marked jacks to insert existing wires into. Installed in less than 30 minutes, tested - working great.
Jim B.
9/30/2015
After a year, lights still working great. They stay out in elements year-round.
I ordered both the ST9RB and ST8RB. After years of use, my other boat trailer lights were starting to cause me problems. I decided to order new ones for each side. These are a different make, but the connections were the same as were the mounting holes. Just took minutes to mount and both worked great. Nice bright lights again! Good price and fast shipping. I would definitely order again.
Jes
7/11/2016
Other than changing a bulb, they are still working like new! Money well spent.
Great web site.
Daniel
10/16/2025
Great
Trailer light arrived as advertised. Installation was straight-forward.
These light were a good replacement set for my Home Depot Snowbear trailer taillights. Best price I found for this or similar was here at etrailer.com.
Pic is not of my own trailer but is the same model. You can see the configuration of the taillights.
Fits perfectly
Works perfectly
Last project built. Used etrailer for almost all parts, including the taillight. Friend wants one now so started another one. I will be getting all the parts from etrailer...
The part was exactly what I needed
We purchased a replacement combo tail light. It arrived on time, in good condition and was the exact replacement.
Although it does not really show on our trailer, we have attached a picture since the trailer has a unique use. It's a small landscaper's trailer converted to a mobile radio broadcasting studio.
Identical match to my factory tailight. William S. was very helpful and professionl. Great customer service
No instructions. Various lights like this have various connection types. I could not get it to light up.
Nick S.
11/17/2025
The rear of the light accepts bare wire to wire in the light. In order to ground it you need to make sure it is installed and bolted to a bare metal surface as it uses the way that it mounts as the ground. I would make sure you are getting a good ground connection when mounting the light.
This one is for the “driver” side. It has the lens on the bottom for lighting the license plate. (It does not include the license plate holder. I like this one because you just push in the wires. I recommend this light.
Theodore
2/20/2021
No worries
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Mr C.
5/24/2017
NO PROBLEM, GASKET STILL WATER TITE. OEM HAD TO CLEAN INSIDE ABOUT EVERY 3 MONTHS, PLUS MOISTURE ALWAYS SHORTING BULBS. BEST LITE EVER USED AND TOP SUPPLIER