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Optronics


  • Optronics has been a leading supplier of trailer lighting for over 30 years
  • Meets the federal lighting requirements for trailers where applicable
  • Most lights are available in LED or incandescent





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Expert Answers about Optronics

  • How to Wire Electric Brakes on a Tandem Axle Trailer
  • If your trailer has 7 wires running all the way back to the brakes, then yes, you can tap into the existing wiring. Each of your new brakes will have two wires for the brake magnet. One wire is for 12 volt power to the brake magnets and the other wire should be grounded either to the trailer frame or to the main trailer ground wire. It does not matter which wire is used for power or ground because they are not polarized. If the trailer wiring is running down the left side of the trailer,...
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  • How to Change Tail Light Bulbs in a Submersible Trailer Tail Light
  • If you have a newer model Wesbar Submersible Low Profile Trailer Tail Light, item # 403076, there are screws on the inside of the housing securing the clear capsule to the light housing. Removing these screws will allow you to remove the clear capsule cover and replace the bulbs. When the clear capsule is replaced an o-ring seals the bulb. The replacement bulb is part # A1157B. The older Wesbar tail lights used factory sealed capsules to prevent water from getting to the bulb and socket....
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  • How to Cut a Grommet Hole for Installation of the Oval Trailer Tail Lights # STL22RB
  • The easiest way to cut the oval hole for the Rubber Grommet, # a70gb, in my opinion, would be to use a Light Mounting Bracket for 6-1/2 inch Oval Trailer Lights, BK70BB, as a template and then use a hole saw the correct size to cut a hole on each end of the mounting location. Then, use a angle grinder with cut off wheel or a reciprocating saw with metal cutting blade to cut the straight top and bottom sides of the hole. The correct width for the grommet is 2-5/8 inches, but I have found...
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  • How to Remove Flush Mount Taillights and Grommets in a Square Tube Snowmobile Trailer Frame
  • It sounds like your trailer has the 6-1/2 inch Oval stop turn and tail lamps and some side marker lamps that use a rubber grommet like the 6-1/2 inch oval tail lights grommet, # A70GB. Since the area where your lights are mounted is not accessible from the back side, you will need to pry the light out of the front of the grommet with a small screwdriver or other similar tool. If you could find a plastic pry tool that might work better and keep you from damaging the rubber grommet. Another...
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  • How To Wire LED Stop/Turn/Running Light
  • You should have 3 wires at the rear of your LED light, or from a pigtail like part # A47PB, that plugs into a light like part # STL22RB. The red wire will be connected to your stop/turn circuit on your vehicle. The black wire is spliced into your running lights, or the lights that are turned on your vehicle when the headlight switch is on. The white wire is your ground and needs to be attached to a clean, bare metal surface. It may help using a circuit tester like part # 3808,...
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  • How to Wire the Camping Travel Trailer Stop, Turn and Tail Light, # RVST50
  • The Camping Travel Trailer Stop, Turn and Tail Light, # RVST50, has a total of 3 wires. The white wire is the ground and needs to be connected to a clean and corrosion free metal surface. It sounds as if the clearance lights are using the turn signal function instead of the running light function. Usually, the running light function on a trailer is a brown wire. You can use a circuit tester, like the Quickee # 3808, to find the correct wire. This wire will split off at some point near...
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  • How To Charge Trailer Battery On Dump Trailer Using The 7-Way Trailer Connector
  • You will want to use a circuit tester like the Quickee Tester, # 3808, and check the # 4 terminal on the back of the 7-way trailer connector on your trailer for power. This is the 12 volt power terminal so there should be power to that terminal. You will need to run a 10 gauge power wire like the, # 10-1-1, from the # 4 terminal (12 volt) on the 7-way trailer connector on the trailer to the positive terminal on the trailer battery. This will allow you to maintain a charge on your trailer...
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  • How to Wire Reverse Lights on a Trailer with a 4-Way Trailer Connector
  • We do have a solution for you, however, you will not be able to power reverse lights on a trailer with a 4-pin trailer connector. The reverse lights on a trailer must receive power from the reverse lights on the tow vehicle. To do this, you will want to install a 5-pin connector on the trailer and on the tow vehicle. There are many options, but I recommend installing the Hopkins Endurance 5-way Flat Wiring Kit, # HM47890, for a uniform look. You can simply cut off the 4 pin connectors...
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  • Is there a Special Trailer Tail Light Bulb for Turn Signals, Brake, and Running Lights on One Bulb
  • Trailer tail lights have a combined circuit for turn signals and brake lights and a separate circuit for the running lights. Because of this type of system you would not be able to get all the functions on a single circuit. That type of wiring is fairly complex and is primarily found on German vehicles (Volkswagens in particular) but not all. But even on trailer stop, tail, and turn signal lights the functions are all on one bulb, sometimes 2 depending on the light. But there are still...
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  • What is the Difference Between Over 80 inch and Under 80 inch Trailer Tail Lights
  • A trailer that is over 80 inches wide is required by DOT regulations to have rear clearance lights. An over 80 inch taillight kit, like part # TLL16RK, will have the side clearance light built into it. An under 80 inch taillight does not have the clearance light built in and an additional red, rear side marker light would be required if you used an under 80 inch rated light on a trailer that is over 80 inches wide. Using an over 80 inch taillight on a trailer like yours that is under...
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  • How do LED Sidemarker Lights Wire in to Trailer Light Wiring
  • When installing a sidemarker light such as this Optronics Trailer Light # MCL44AB you will want to splice into the signal wire for your trailer running lights circuit and then run the ground wire to a clean metal surface. The black wire will be the power wire and the white wire is the ground wire. I attached an FAQ on trailer wiring for you to check out also. I also attached a review video for this product for you to check out. This video shows how the light gets wired and looks when...
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  • How Do I Convert My Incandescent Trailer Lights to LED Lights
  • Yes, you just have to remove the old lights, match the wires and mount the new ones. Please note, that it is usually not a good idea to mix LEDs and incandescent lights, so if you have have side markers or other lights on the trailer, make sure you switch those to LEDs as well. Incandescent lights draw much more amperage than LEDs do, and if they pull that current through the LED fixtures, the LEDs could burn up. We have LED side markers and clearance lights like part # MCL36AB and...
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  • Correct Wiring for Optronics LED Trailer Lights # STL22RB
  • To install the Optronics LED Trailer Lights, part # STL22RB, you will need to use the Straight 3-Wire Pigtail, part # A45PB. The Red wire of # A45PB will carry the turn signal function, the Black wire is for running lights, and White is ground. If you are referring to installing the lights on your vehicle, you would need to use a circuit tester, part # 3808 to test the functions of each wire. If installing on a trailer, I would recommend running new wiring from the lights to the trailer...
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  • How to Replace Blown Tail Light Bulb on Trailer
  • There are a wide variety of trailer lights offered and these come with different type of construction. Some lights may not be user-serviceable (such as some LED types and sealed waterproof lights) but usually trailer lights that use standard incandescent bulbs have either a removable lens that either snaps into place or that is held in by screws. Examples of such lights are # ST51RB and # 432200. You can use the link provided to see all trailer tail lights offered. You can use the filters...
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  • Which Wires Are Used When Installing Marker Lights On Trailer
  • For a typical trailer wiring you will have a brown and green wire for the right hand side of the trailer and brown and yellow wire for the left side. If this is a new wiring installation and you are installing wiring like part # A35W42B, the brown wire that runs down each side of the trailer is for the marker lights and tail lights. The yellow and green wires are for the left and right turn signals. You will want to tap into the brown wire for the marker lights. If you are adding...
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  • Replacement Submersible Tail Lights for a Shorelander Boat Trailer
  • First, the additional function is a license plate light. If your license plate is mounted and/or illuminated elsewhere then you could use 2 right side lights. When replacing trailer lights it is best to go with all LEDs or all incandescents. Mixing the types can result in lights not working or overdraw on the LEDs. Otherwise you can use either one. The dimensions, 6-1/16 inches long x 3-5/8 inches wide x 2-1/4 inches deep, for # STL56RB are correct. Rear reflex means that the lens...
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  • Connecting 5 Wires From a Trailer to a 7-Way Trailer Connector
  • The best solution for your situation would be to use a circuit tester, like part # 3808, to wire your trailer wires to a seven way trailer connector, like part # A7WCB. Wiring by function is the best way to make sure you have the trailer connector wired correctly. Be sure you know what the black wire function is on the trailer. It will probably be for a twelve volt battery or for reverse lights, but it could be used for something else. The location for the black wire in the connector...
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  • How to Activate Boat Trailer Surge Brake Lockout from the Factory 7-Way on a 2012 Toyota Tacoma
  • It sounds like you have a factory 7-Way connector on your 2012 Toyota Tacoma and that you also have the dealer supplied electric brake controller wiring harness for wiring an electric brake controller in the cab of your vehicle. Since your boat trailer is equipped with surge brakes, you will not need to install an electric brake controller in the cab of your Tacoma. The first thing you should do is check the center pole, see photo, in the 7-Way connector on your vehicle with a circuit...
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  • How to Install New Trailer Lights that Only Have One Wire
  • A trailer light that only has 1 wire means that it grounds through its mounting hardware. The single wire is the power wire. The best surface to ground a light to is steel. If steel is not available in the area the light installs you can attach a ring terminal and wire to the grounding stud and attach the other end of the wire to the original ground wire from the old light.
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  • Load Resistor Recommendation for Use with LED Tail Lights on a Flat Bed Truck with Hyperflash
  • You will wire a load resistor into the wiring of each light socket that has an LED bulb and flashes. So basically you will need to wire a load resistor into any bulb that blinks or has a dual intensity feature that lights up when the brakes, blinkers, or emergency flashers are operated. To do this correctly, you will need to wire the load resistor on the positive wire and then either ground it to the ground wire of the bulb, or to a good frame ground. You will need to do this for all...
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  • Troubleshooting Trailer Lights Going Out When the Brakes are Applied After Trailer Light Kit Install
  • It sounds like you have a ground issue. When trailer lighting does not have a sufficient ground many different scenarios can show up, but the most prevalent is when the most amperage is applied, like tail lights on and brake pedal pressed, the lights go out. All lights must be properly grounded for proper function. When installing the standard trailer light kit, # TL29BK, the lights are grounded through the mounting studs. You need to make sure that the mounting studs are contacting...
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  • How to Install Tail Light and Grommet into Trailer Light Mounting Bracket # BK70BB
  • I went out to the warehouse and pulled a # BK70BB bracket, a 6 inch oval tail light and the A70GB grommet. I found that it is much easier to install everything if you push the grommet fully into the bracket until it is fully seated and then push the light into the grommet until it bottoms out. At that point, you will have a fit tight enough that the lamp is securely held in place. Make sure the grommet is pushed FULLY into place before inserting the lamp.
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  • How To Wire A Third Brake Light On A Trailer
  • To get a third brake light on your trailer I would recommend the Optronics Sealed, Streamline LED Trailer Third Brake Light, 1-Function, part # STL80RB. This can be wired to your trailer using the Tow Ready Vehicle to Vehicle Taillight Converter, part # 118158. To install the tail light converter # 118158 on your trailer you will connect the wires on the input side of the converter, white (ground) to the trailer frame, green wire to green wire on your trailers wiring, and yellow wire...
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  • How to Wire the Left Rear Camper Tail Light # RVST51
  • When wiring the # RVST51 Tail light with license plate light, you should only have one wire going to the turn/stop signal connection and one wire going to the taillight connection on each side of the trailer. The Left side turn/stop wire on the trailer is yellow, Right side turn/stop wire is green, taillight wire is brown. On the left side you should connect the yellow wire from your trailer lighting to the green wire on the # RVST51 tail light, and connect the brown wire from the...
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  • Trailer Brake Wiring for Tandem Axle Brake System
  • I'm not sure what the sensor you describe is for. Typically trailer wiring is color coded so that right turn and brake light signal is carried by a green wire, and the brown wire carries the running light circuit. The brake output circuit is usually carried by a blue wire which travels to each brake magnet, where it attaches to one lead from each magnet. The other lead from each magnet will ground to the trailer frame. I'll give you a link to a typical trailer wiring diagram. I...
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  • Recommendation for Adding Taillights to Rear of Hitch Mounted Bicycle Rack
  • We don't offer anything purpose-built to install taillights on a hitch mounted bike rack, but you could effectively modify an existing system very easily. If your bike rack is steel, you could simply use a magnetic mount tow light like part # C-ATL20A. There would be some extra wire you'd need to bundle up and secure with zip ties, but the installation would be very simple. Another option would involve using a light kit designed for a cargo carrier. I'd recommend the # 59516 kit and...
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  • Amber Trailer Light Lens To Replace Glo-Brite 118A Trailer Light Lens
  • Based on my research, the Glo-Brite 118A amber light is approximately 4 inches long by 1-1/2 inches wide. I spoke with my contact at Optronicc who confirmed that their Replacement Amber Lens # A44AB will fit the Glo-Brite 118A trailer light. I found the Glo-Brite 117R light to be a red taillight of the same 4 inches by 1-1/2 inches. For a replacement lens for the red light you could use part # A44RB.
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  • Converting Separate Turn Signals and Brake Lights to Combined Turn and Brake Lights on a Trailer
  • If the trailer is one that is pulled by a motorcycle or a trailer designed to carry a motorcycle, you will need a converter in order to convert the wiring system used by the 6-Way to a 2 wire system used by trailer lights. The converter you can use is # RM-732. This takes the separate turn and brake signals and makes them a combined circuit. When you hit the brakes with the turn signal on, it should blink on one side and the other side will remain a solid brake light. The converter will...
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  • Trailer Wiring Issues with Running Lights Blinking
  • Step one is to isolate the problem to either your tow vehicle, your wiring harness or your trailer wiring. To begin, disconnect the trailer wiring harness from the towing vehicle. First focus on troubleshooting the trailer. Check the white ground wire from the trailer plug to ensure that you have a clean secure ground connection to the trailer frame. Internal trailer wiring can over time develop wear spots in the insulation that can create a dead short. Such a condition will quickly...
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  • Direct Replacement Oval Stop Turn and Tail Light for a Model J-60 Trialer Light is the # ST70RB
  • Yes, the J-60 light is a 6-1/2 inch wide by 2-1/4 inch tall light that is 2-1/4 inches deep overall so the Sealed, 6-1/2 inch Oval Trailer Stop, Turn and Tail Light, 3-Function, item # ST70RB, is a direct replacement for your light. If you need a replacement grommet for the light you can use the Rubber Grommet for 6-1/2 inch Oval Trailer Tail Lights, item # A70GB, and if you need to wire the light or replace the connector you can use the right angle pigtail, item # A47PB, or the straight...
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