See what our Experts say about this Optronics Trailer Lights

• Adding Additional Taillights to 6 by 10 Utility Trailer
  I don't have a wiring diagram specifically suited to what you're wanting to do, but I can certainly explain how to wire the additional lights. If you're wanting to add the # STL78RB lamps, the red wire taps into the turn signal/brake circuit, the black wire connects to the running lamp circuit and the white wire grounds to the trailer frame. You may tap into the existing trailer taillight circuits. Since these are LED taillights, the additional voltage draw will be minimal. For your existing...
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• Trailer Tail Light Replacement Recommendation for TecNiq 16P2S2T2T60
  I believe the tail lights you have are the TecNiq T60 lights which are industry standard 6" oval recessed lights. To replace those you can use the Optronics Fleet LED Trailer Tail Lights # TLL12RK. If your lights look different than this please send in a picture with some dimensions so I can help you find the correct replacements.
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• Replacement Fender for Shorelander Boat Trailer SRV1724
  Thanks for the information regarding your boat trailer, I was able to look up the tire size of your trailer in order to determine an appropriate replacement fender. I found that the trailer tire specified for your trailer was listed as a ST185/80R13. Therefore the trailer wheel is a 13 inch wheel with an approximate overall diameter of 24.4 inches. If your trailer tire is not this size please feel free to reply with an updated tire size and I can make additional recommendations for you....
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• Installation of Optronics Sealed, 6-1/2 Inch Oval LED Trailer Stop, Turn, and Tail Light
  Thank you for your purchase from etrailer.com! The Optronics Sealed, 6-1/2 Inch Oval LED Trailer Stop, Turn, and Taillight # STL78RB that you purchased will need to be hardwire installed on your trailer. You will want to connect the light to your trailer's wiring by function. You can use a circuit tester, like # PTW2993, to determine the functions of your trailer wiring. The white wire on the light will need to be grounded. I recommend running the light ground back to the main trailer...
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• Recommended LED Trailer Light Under 3.25 Inches Tall
  The lights we offer that are closest to the size you mentioned that we carry is part # STL78RB. These lights measure 7-9/16 long when you also include the mounting flange, x 3-5/16 inches wide, x 3/4 inch deep. This light has 10 LEDs and is a waterproof assembly. The mounting holes for this light are spaced 7 inches center-to-center, and 2-3/4 inches for the width. This light has 3 wires, red for the brake and turn signal, black for the tail light, and white is for ground.
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• Recommended Optronics Tail Light With 3-Prong Plug Attached
  I do have options for you. We have the Optronics # STL78RPG, which is essentially the Optronics LED Trailer Tail Light # STL78RB with a 3 prong attached. We also have the GloLight LED Trailer Tail Light # STL178RFPB. This light is identical in size to the light you mentioned, and will come with the 3 prong plug attached. The only difference is that the # STL178RFPB is a 22 diode instead of a 10 diode, so it will be a brighter light.
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• Do Optrionics LED Trailer Light # STL78RB Come as a Set or Sold Individually?
  The Optronics LED Trailer Tail Light - Stop, Turn, Tail - Submersible - 10 Diode - Oval - Red Lens # STL78RB is a single light. If you want a set, you will need to change the quantity box on the product page when ordering. I've attached a photo of the dimensions of the light as well as the mounting hole locations to assist. You may also be interested in the accent ring # A78CB or reflector # A78RXB which snap on to cover the mounting screws.
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• Troubleshooting Trailer Left Turn Signal Light That Does Not Blink
  Its usually easiest to disconnect the trailer from the vehicle and test the trailer functions directly by connecting 12V power from the vehicle (or another) battery right to the various circuits on the trailer plug. This way of testing isolates the trailer from any issues that might be present in the vehicle wiring, such as a mis-wired connector. If you do this and the trailer light does not do what it is supposed to do, then check both your main trailer connector ground and the problem...
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• Picture Request for the Snap-On Reflector Ring Installed on a Optronics 6-1/2 inch Oval Light
  I went out in to our warehouse and pulled a Optronics Trailer Light # STL78RB and a Snap-on Reflector Ring for STL78RB Series LED Lights # A78RXB to show you what they look like together. I attached a picture and a video I shot also.
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• Will Optronics Turn and Tail Light # STL78RB Need Additional Power Source on 2013 Toyota Camry
  To use the Optronics 6-1/2-Inch Turn and Tail Light # STL78RB with your 2013 Toyota Camry, you will not need an additional power source. Each of these lights draw draw a fraction of the power of incandescent bulbs and are DoT-compliant. This item would connect using 3 wires: Turn signal and brake (red), tail light (black), and ground (white). I have provided a link to a video review of this product. To hook the Optronic light to your vehicle, I recommend the Tow Ready Custom Fit Vehicle...
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• Replacement 6-1/2-Inch Oval Trailer Tail Lights
  Thank you for the trailer light lens coding. This is not an actual light part number; this usually appears on the light base. Just the same I think what you're looking for is a product like # STL78RB. This is a sealed 6-1/2-inch oval tail light that uses high efficiency LEDs instead of standard bulbs. You can see all oval tail lights by clicking on the linked page. Click on the filters for lens color, bulb type, etc to narrow down the range of lights shown.
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• Optronics Oval LED Light Recommendation to Replace an Older Style Optronics Light
  I do have a solution that should work for you, but we do not carry any Optronics lights with the style connector you have. You could get a Optronics Trailer Light # STL78RB that you referenced, and to install it you would just want to cut of the connector that is on your trailer and then wire the the three wires to the wires of the # STL78RB. The white wire of the # STL78RB will run to the ground wire of your trailer wiring, the red will run to the turn signal/brake wire and the black...
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• LED Tail Light # STL78RB Recommendation for a Coleman Popup Camper
  It sounds like the LEDs that you previously had installed on your trailer were single function LED lights, and that is why if they saw any power they were lit regardless if different blinker, tail light functions were being applied at the same time. These Optronics Trailer Lights, part # STL78RB, that you referenced are designed for all of the different stop, turn, and tail light functions and should work very well for you.
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• Trailer Left Side Running Lights Not Working All Other Lights Work
  On many trailers the running light wires are jumped from one side to the other on the trailer. This is because there is a single running light wire only ran on one side. A wire would have to be spliced in on the one side, ran to the other side of the trailer, and connected to the running lights. If using a junction box, the one running light wire from the trailer connector can go to a single terminal and from there you can run separate wires for the running lights on each side of the trailer....
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• 4-Pole Trailer Wiring Functions & Wiring Installation for Optronics Oval LED Trailer Light STL78RB
  In standard 4-pole trailer wiring there are actually three active lighting circuits plus a ground. The tail light (or running light) function is carried on the (usually brown) wire that is next to the ground pin. Please refer to the linked photo of a trailer-side 4-pole connector that shows these circuit/function assignments. The next pin over, the one for the yellow wire, typically carries the LEFT stop and turn light functions which are combined onto this one wire; and the RIGHT stop...
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• Taillight Recommendation for F008585-2 Fulton Trailer Fender
  We don't offer a taillight specifically designed for use with the # F008585-2 fenders you'd looked at, but I've seen folks use taillights like the # STL78RB mounted to the rear of the fender step as shown in the provided photo. You'd then need to devise a way of mounting and illuminating the license plate if you were to go that route. You could bend a slight radius on the license plate and actually mount it vertically to the rear face of the fender as shown in the provided photo. You'd...
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• Left Trailer Brake Light Does Not Work But All Other Lights Do
  It is strange any time a turn signal works but the brake light on the same side doesn't. this is because the brake and turn signal lights are on the same wire/bulb. The usual culprit is a bad ground. Ground problems normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or brake light. Make sure that the vehicle side and trailer side connectors are clean and free of corrosion inside and out. The...
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• Replacement Taillights for CM Trailers 2-Horse Bumper Pull Trailer
  Thank you for the DOT number from your horse trailer's brake light lens. This is not the light's actual part number; that is usually found on the light base. If you can find that reference you can search our site using that number or use the filters on the linked page to select a new light based on dimensions, shape, etc. I checked photos of CM Trailers' 2-horse bumper pull Dakota series trailers and they currently use LED type surface-mount oval lights like # STL78RB. This light's mounting...
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• Will Snap-on Reflector Ring # A78RXB Fit Optronics GLOLight LED Stop/Turn/Tail Light # STL178RFPB
  Although the Snap-on Reflector Ring, # A78RXB, will not fit the STL178 series lights like the Optronics GLOLight LED Stop/Turn/Tail Light # STL178RFPB, I do have a solution for you. Take a look at the Sealed, 6-1/2" Oval LED Trailer Stop, Turn and Tail Light, # STL78RB. This light was designed to be used with the reflector ring. I spoke with my contact at Optronics and they do not offer a reflector ring for the STL178 series lights.
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• Availability of 2 Inch Round LED Tail Lights for Trailer
  The closest match we have to the 2 inch stop/turn/tail lights you referenced are 4 inch round LED tail lights with grommet mount, # STL42RB. This is a 4 inch round clear back up light that has an overall diameter of 5-3/4 inches and a depth of 1-5/8 inches. This light will require a standard 3 prong plug, # A45PB. At this time we do not have any 2 inch stop/turn/tail lights.
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• What Light Assembly Does Snap-on Reflector Ring # A78RXB Fit
  Although the Snap-on Reflector Ring, # A78RXB, will not fit the STL178 series lights like the Optronics GLOLight LED Stop/Turn/Tail Light # STL178RFPB, I do have a solution for you. Take a look at the Sealed, 6-1/2" Oval LED Trailer Stop, Turn and Tail Light, # STL78RB. This light was designed to be used with the reflector ring. I spoke with my contact at Optronics and they do not offer a reflector ring for the STL178 series lights. The lights look incredibly similar but the light you...
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• Components Needed to Build a Trailer From Scratch with the Timbren Axle-Less System
  I would be happy to help you put together the components you need to build your own trailer and do my best to keep the weight down. You are off to a good start with the Timbren Axle-Less Trailer Suspension System - Spindle w/Brake Flange item # ASR1200S04. These weigh around 50 lbs. However, the brakes you linked item # 23-48 are for 7" hubs and we do not have any that will fit the Timbren systems so you will need to go up to 10" hubs and drums. I recommend the Dexter Trailer Hub and...
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• Are Load Resistors Required When Installing LED Lights on a Trailer
  You will not need to add any diodes or other modules to prevent hyperflashing or any other bizarre taillight behavior when you install this Optronics Tail Light # STL78RB on your trailer. If you were installing LED tail lights on a vehicle and replacing the lights on the turn signal circuit then you would need a load resistor so that the blinkers would function correctly.
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• Is the Optronics LED Trailer Tail Light item # STL78RB DOT Approved?
  Since the Optronics LED Trailer Tail Light item # STL78RB is red it can be used as a third brake light. This light is DOT approved and can also be used as a rear turn signal. To use it only as a third brake light you will want to wire the black tail light wire and the red stop/turn light wire to one circuit. The white wire is ground. If you are needing to add a turn signal on the side of your trailer you will want to use an amber light like the item # STL78AB. I have linked a review video...
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