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Optronics Vehicle Lights
Optronics Recreation Lights

Optronics Trailer Lights
Optronics Fishing Lights

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





Optronics Reviews and Installation Videos


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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 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 # 40376,...
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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 Charge Trailer Battery On Dump Trailer Using The 7-Way Trailer Connector
  • You will want to use a circuit tester like part # 40376, 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 battery,...
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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 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 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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  • Removing the Lens on Optronics RV Oval Porch and Utility Light - Amber
  • The lens on the RV Oval Porch and Utility Light # RVPL5A is held to the housing with some tabs on the lens that fit slots on the housing. To remove the lens you will need something thin and flat like a knife or small screwdriver to gently pry the lens free. The tabs on the lens are located at the top and bottom of the lens so to avoid breaking then start gently prying on the sides of the lens until you can see the tabs well enough to avoid them. The lens can be snapped right back into...
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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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  • The Main Reason for Nearly All Trailer Wiring Problems
  • Rewiring a travel trailer like yours would be pretty challenging as you will need to most likely remove interior walls to access the wiring. Since it would be much easier to check the grounds first (as that is most likely the actual problem) I recommend you start there. Nearly all trailer wiring issues are ground related. Try finding a better ground for the light assemblies on your trailer to see if the issues you are having go away. Some assemblies ground through their mounting hardware....
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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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  • 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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  • 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 # 40376, 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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  • 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 Properly Ground Trailer Marker and Taillights
  • Each lamp needs to be grounded either through its mounting studs being in direct contact with the trailer frame or by having a jumper wire ran from the lamp to the trailer frame. Ground the trailer connector at the front of the trailer, which will use the trailer frame as a ground wire. This method is the most simple and effective. You could run a ground loop, but if everything's properly grounded, it won't be necessary. I'll link you to our FAQ article on trailer wiring.
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  • Does 12V Pin on 7-way Trailer Connector Always Have Power
  • It sounds like you're asking about the 12V circuit on the 7-way trailer connector on the rear of your 2003 Chevrolet Trailblazer. Some vehicles will always have power and some others will not. We don't have this specific information for your vehicle, but to determine if your 12V always has power you can test the pin in the 1 O'clock position on your 7-way. The other pins will have power when the corresponding light is used or the brake pedal is pressed.
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  • What Size Hole to Mount Optronics 6-1/2 Inch Oval Taillight # STL22CCRB
  • The # STL22CCRB lamp you referred to is typically mounted in a grommet, like part # A70GB, which in turn is mounted in a bracket like part # 337LB1SS. If you were planning on cutting a hole to mount the lamp and grommet, the hole will need to measure 6-3/4 by 2-1/2 inches, as you can see in the diagram I provided. The easiest way to cut the hole would be to use a 2-1/2 inch hole saw, and cut two holes 6-3/4 inches apart (measured outside-to-outside). You could then use snips or a rotary...
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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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  • How to Replace the Bulb in the Snap-In License Plate Light
  • Yes, to replace the bulb in the Optronics Snap-In License Plate light, # LP11CB, you will need to pry the bulb holder away from the lens housing with a small screwdriver. Rather than explaining it in detail, in writing, I produced a short video demonstrating how the bulb is accessed and removed for you, see link. If your bulb is a different brand or model there is a possibility that the housing is sealed and the bulb is not replaceable and the whole unit would need to be replaced. The...
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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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  • Brake Controller Has Power But Trailer Brakes Do Not Work
  • There are some tests you can do to determine where the problem is: brake controller, truck, or trailer. First, in the truck cab you will need to sever the blue wire several inches from the back of the controller. Then use a circuit tester such as # ALL640595 to test the end of the blue wire coming out of the controller. It should only have power when you apply the manual override or brake pedal. If it shows power at idle then there is something wrong with the controller and it will need...
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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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  • 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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  • Troubleshooting LED Lights Not Working On Trailer
  • The first thing I recommend doing is to check that the ground wire for the lights are securely attached to a clean metal surface on the trailer frame. A loose ground wire will keep the lights from working. If the ground attached to the trailer does not give you an adequate ground, you can run the wire up to the ground circuit on the trailer connector. Next, you want to make sure the wiring on the trailer is wired correctly and wired by function, not just by color. I recommend using...
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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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  • Removing the Lens Cover on RV Euro Style Interior Single Ceiling Light with Built-In Switch # RVIL21
  • I went out to the warehouse and pulled an RV Euro Style Interior Single Ceiling Light with Built-In Switch, # RVIL21, to determine how the lens is removed. There are 4 tabs, 1 at each corner, that hold the lens onto the base. You will want to squeeze in on the sides of the lens and pull back at the same time in the direction away from the switch. The lens will slide back allowing the tabs to clear the base and the lens can be removed giving you access to the bulb. I found the best place...
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  • Trailer Lights Do Not Light Up But have Power on All Wires
  • The problem you are experiencing sounds like a ground issue and/or short circuit. 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 but can show up any time. Make sure that the vehicle side and trailer side connectors are clean and free of corrosion inside and out. The main connector grounds should be attached to clean and corrosion free bare metal surfaces. The...
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  • Utility Trailer Light Wiring Diagram and Required Parts
  • I have attached two basic trailer light wiring diagrams of utility trailers for you to check out. The difference between the two diagrams is the type of wiring harness that is being used. Diagram 1 shows a traditional wiring layout with jumper wires to provide running light functions for both sides of the trailer and Diagram 2 shows a wishbone harness. The wishbone harness has two running light wires, one for each side of the trailer. Diagram 2 is the preferred method and it is more common...
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  • Red, Black, and White Wire Functions on Old Trailer Light
  • It is likely that the red wire on your old lights is the turn signal/brake light wire and the black wire is the running light wire. That would make the white wire the ground. You can verify this by testing the wires using a circuit tester such as # ALL640595. Connect the trailer to the tow vehicle and have someone operate the light functions while you test the wires. On your new light it sounds like the green wire is turn signal/brake light, brown is running light, and it grounds through...
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