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This rectangular 5-5/16" x 3-7/16" light covers all your main trailer lighting needs in one unit—stop, turn, and tail. It’s built with an incandescent bulb that connects easily through a standard 3-prong plug for simple power and ground hookups on a 12V DC system. The durable polycarbonate lens gives clean, bright light that stays visible and consistent mile after mile.
When your trailer sees wet roads or full submersion, this light is ready for it. The housing and lens are sonically sealed into a single waterproof piece that keeps moisture out completely. That sealed design protects the bulb and contacts from corrosion or shorting, keeping your lights working even after repeated dunkings.
Bumps, vibration, and rough roads can destroy ordinary bulbs. This light uses a shock-proof socket that absorbs impact to protect the incandescent bulb from damage. It’s a simple but solid safeguard that makes the light more reliable on uneven terrain or during long hauls.
The recessed mount design lets this light sit neatly into your trailer body for a clean finish. It works with the A33GB grommet (sold separately) and accepts industry-standard wiring harnesses like the A45PB or A47PB. When mounted with the proper grommet, you’ll need a 5-7/16" x 3-3/4" hole—just right for a snug, professional fit.
At 12.8V, the stop and turn functions draw 2.19 amps while the tail circuit uses just 0.49 amps. That balance means bright brake and signal lighting when you need it most, without unnecessary load on your electrical system. Backed by a 3-year warranty, it’s built to stay dependable trip after trip.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today we're going to review part number ST33RB. This is the Optronics flush mount rectangle trailer stop, turn and tail light. This is a red rectangular light; serves 3 functions - stop light, turn and tail light. It is a sealed, waterproof housing and lens unit. In the inside is a heavy-duty long-life bulb and the socket at that bulb is in a shockproof socket, which guarantees a long bulb life. On the back, you'll notice it does accept the industry standard, 3-prong plugs to install it. This light is designed to flush mounts in a mounting grommet and then the 3-prong plug to plug in the supply power.
Those are required for installation. If you already have those, you can use that. If not, we do sell those parts separately. This is the grommet that it uses. It's part number A33GB.
Basically, you just pop that in there. Then there's the right angle 3-wire pigtail. They offer 2 different 3-wire pigtails. This is the right angle design. It's part number A47PB, sold separately.
The reason it's a right angle you can see when you plug it in, the wires come down at a right angle. If you plug it in like that, you can see that the wires are coming out at a right angle. I'll go ahead and pop that off. Then the other 3-wire pigtail is the straight 3-wire pigtail, A45PB. You can see those when you plug it in, the wires just come out straight.
Either one, whichever is going to fit for your application. A few dimensions on this; the overall and again, this is from edge to edge; edge to edge you're looking at about 5-5/16". The height again is going to be, edge to edge is going to be right in about 3-7/16"; and then the depth on it is going to be right at 2" inches deep. What I'm going to do now is we're going to hook, let's take the straight wire pigtail. We'll go ahead and plug it in and then hook this up to a 12-volt power supply. You have that plugged in, you got your 3 wires coming out. White is your ground, black is your tail light and your red is your stop and turn. What we're going to do is I got a 12-volt power supply here; we'll hook it up to. We'll go ahead and hook up the white for the ground; hook up the red for the stop and the turn; then we'll hook up the black for the tail light function. Now what we're going to do is going to go ahead and turn off the overhead lights. We'll go ahead and turn on the 12-volt power supply and you can see there's your tail light function. When you hit your brakes, you can see the other filament would light up and be stronger, so that would be your brake light. When you hit your turn, it will be the same dual filament; the upper filament would be your turn signal. We're going to turn off our power; turn back on our overhead light. That should do it for the review on part number ST33RB. This is the Optronics flush mount rectangle trailer stop, turn and tail light. .
Customer Satisfaction Score:
100% were satisfied with this product
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Ratings & Reviews
Got the reshipment of my tail light in two days. the fast resolution of a
problem that was not etrailer's fault will be a big and important
factor when I need trailer lights again. yes ill do business with
y'all again when lights are needed.
Got the exact part for my racing enclosed trailer. Part came just when promised and was packaged very well to prevent damage during shipping. Will definitely purchase again for all my trailer needs.
I ordered this and received the part as promised and on time. The replacement light worked great and went in with no issues.
This product was originally came with a trailer bought about 20 yrs. ago. I needed the exact replacement or modify the trailer taillight mounts. Etrailer.com had this original product. The ordering and processing was very professional. The company notification process and product location after shipment was exact. Etrail is one stop shopping for all your trailer needs.
I ordered this light and it is a replacement for my Thule luggage carrier that attaches to my cars hitch. It is an exact replacement for a good price and with fast shipping. It seemed to be hard to find elsewhere.
I needed a special tail light for my Yamaha golf cart but no success with local golf cart dealers including Yamaha. After several failed searches I found etrailer website and the product page was excellent. Found the exact match from product description with dimensions and various viewing angles. Very professional!! The tail lights came as quoted. Thanks. DB
I have a flat bed on my truck and it uses trailer lights in it. When I looked for replacements all the stores wanted $10 to $30 a peace!!! Etrailer saved me almost $100 over going to may local store. I ordered it on sunday night. I had 2 personal emails telling me my order was ready and being shipped. ON SUNDAY NIGHT!!! I had my order by Wednesday with a follow up email telling me my package was waiting for me at home. My only complaint is why other online stores can provide this service. etrailer, I will be ordering again. Thank You
Installs easily, just reverse of removal. Just plug in wires, push light around rubber mounting bracket add silicone for water seal. Install fastners to rubber mounting to the trailer and your done . I ordered 2 so I would have a spare. Worked right of the box, can't get much easier.
I checked all of the local dealers for trailers and campers for this light. Not a single one had it in stock, nor could they seem to find it in a catalog. I went onto etrailer.com and found the exact light I was looking for in less than 2 mintues. I ordered it, chose normal shipping and it was at my door in less than 5 days. The light is a perfect match and works flawlessly. Thank you etrailer for saving me a lot of headache and tickets!
This was delivered a day earlier than expected. It was packaged well and worked great. I was surprised how difficult it was to find a tail light for my CM flatbed. This one fit perfectly!
Rd
3/10/2017
Still working perfectly!
Very good service.
I needed a sealed brake/light/turn light that I couldn't find anywhere. etrailer had it at a great price. Shipping was reasonable costs and quick.
Jack
2/20/2019
Still working great.
Excited again to find these lights on etrailer as the truck has a flatbed with trailer lights and you just can't get the lights for the actual vehicle.
Renee O.
1/9/2018
They are great, no issues.
Nice product for good price
Delivery was quick. I installed the lights for my Thule Terrapan 684 cargo carrier. The video on etrailer.com was very helpful and complete. Kelly was helpful in clarifying that this light was a match for the discontinued light that was original. I placed the order with her and want to express my appreciation for a job well done.
Got here fast and works great. Will use etrailer again.
Exactly what I was looking for
Exact replacement part for the Thule box
The taillights I ordered were shipped within a few hours of my order. They arrived a day earlier than expected. They worked perfect for what I needed. The only problem was the lens was dull and not shiny, almost like something was on it, but it wouldn’t wipe off.
Thank you for the quick delivery! We are so happy that you carried the product that we needed. Your business is the only one we found that had it!
Purchase was easy and it arrived in good time.
Perfect fit for my cargo mate trailer.
Hoping that these will work with my Thule Combi cargo carrier.
Etrailer is a professionally run organization.
Exactly what I needed for replacing my tail lights on my Continental Cargo trailer. Super easy using a large flat screwdriver to pry them out of the rubber boot. Unplug the old, plug in the new, and press the new light back into the boot. Easy, and affordable!
I WISH they had them available in LED. But hey, the last ones lasted 20 years. So no complaints.
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Chip G.
8/21/2017
light is still working great one year later