See what our Experts say about this Optronics Trailer Lights

• Can Single Wire Clearance Light Be installed To Replace 2-Wire Light On Travel Trailer
  If a trailer clearance light like part # MCL44AB1 is used, the one wire is the power wire for the light and the light will be grounded through the mounting hardware. If you want to use the ground wire that you have on your trailer you can install part # MCL44AB. This has a 2-wire install, where one is for the power and the second wire is for the ground.
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• Recommended Mounting Hardware For The Optronics Clearance Lights MC44AB1
  For mounting a clearance light I recommend using a few self tapping screws. Preferably a # 10 or # 8 screw like the # 101131802. You will also want some butyl tape # QR59FR, to weatherproof the screw holes. Hardware for these is basically generic and it really comes down to what surface you are mounting to. Optronics does not sell a hardware kit specifically for the # MCL44AB1 or # MCL44RB1.
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• Installing Optronics LED Trailer Clearance Lights # MCL44RB
  The Optronics LED Trailer Clearance Lights # MCL44RB that you will be installing on your trailer features a power and ground wire. The black wire coming from the assembly is for power and the white wire is for ground, which will just need to be attached to a clean, bare metal surface on the trailer. It's possible that the two black wires coming from your existing/old assemblies could be used for either ground or power, but I can't be sure of this. When installing the new assemblies all...
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• Is the Wiring Accessible Behind the Lens of Optronics Clearance light # MCL22AB1
  On trailer light # MCL44AB1, beneath the lens where the power wire attaches to the circuitry is sealed. What you would need to do is push the power wire in through the hole in the back, make the cuts and splices needed and push it back through the hole. I made a short video showing you the inside of the light. The same thing applies to the red version of this light.
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• Replacement Lights For Optronics MC44, 1 Wire Lights In Red and Amber LED Lights
  Yes, we do have the Trailer Clearance or Side Marker Light # MC44AB1 available as an LED # MCL44AB1. This has the same 1 wire connection so the ground wire is achieved through the mounting hardware. We also have the Red LED # MCL44RB1 if you have any Red Lights MC44RB1 you would also like to replace with LED's.
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• How to Determine Correct Wiring Connection for Replacement LED Clearance Lights
  Clearance lights function from the running light circuit (that also powers your tail lights) and since this is typically just a 2-wire hookup the extra wires on your lights could simply be there to allow multiple clearance lights to be wired together. Very often in trailer wiring a white wire serves as ground; based on your photo that would make the green wire the + wire for the running light circuit. You can simply test the light wires on the trailer while you have 12V power connected...
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• Troubleshooting Side Maker Lights Not Working When Going From 2-Wire Lights To 1-Wire Connections
  It sounds like when you connected your single wire marker light like the Optronics LED Trailer Clearance and Side Marker Light # MCL44AB1, your ground connection on that side was removed. This would cause all the other lights on that circuit to no longer work. The single wire style marker lights ground themselves when through the mounting hardware. If your mounting hardware is not grounded to the frame and the frame back to the trailer connector you will not have a complete circuit. If...
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• How Do I Wire A 2 Wire Light In Place Of A Single Wire Light On My Camper?
  The lighting on your 1987 camper van used a single power wire input and would ground the lamp through the lights mounting bracket. This is how the Optronics LED Trailer Clearance and Side Marker Light # MCL44AB1 would connect. The Optronics LED Trailer Clearance and Side Marker Light # MCL44AB uses a 2 wire connection similar to the wiring on your new lights. You will attach the red power input wire on your new lights to the red wire on your camper van. The white wire will need to be...
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• Availability of Incandescent Version of Optronics # MCL44AB1 LED Trailer Clearance/Side Marker Lamp
  The incandescent version of the # MCL44AB1 lamp you mentioned is part # MC44AB. The lamp measures 4 by 1-1/2 inches and mounts on 3 inch centers. The lamp is a two wire design, one wire for power, the other for ground. This differs a bit from the LED version that grounds through its mounting hardware.
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• Wiring Single Wire Trailer Clearance Lights
  The single wire clearance lights like # MCL44AB1 will be grounded through the mounting. You can either mount these to the frame of the trailer or structural components connected to the frame of the trailer. The siding or skin of the trailer is not likely to be a good enough ground. You can run a common ground wire to the series of lights used if there is not a good connection between them. I've attached some videos and articles to assist.
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• Can Power Wire of the Rectangular LED Trailer Clearance Light be Routed Through Angled Base Hole
  If you wanted to route the power wire of the # MCL44AB1 through the angled hole on the back of the base of the light you certainly could, but you are going to have to slightly enlarge the hole as the wire will be just barely too thick.
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• Recommendation for Sealed Clearance Lights to Replace Corroded Assemblies on Trailer
  To replace your existing Optronics # MCL44RB and # MCL44AB1 Clearance Lights with sealed alternatives, I recommend taking a look at the Optronics Sealed LED Trailer Clearance Light - Amber # MCL49AB and Red # MCL49RB. These feature a bit of a different shape than the standard rectangle of your existing assemblies, but they do have very similar dimensions, along with the same 3 inch mounting hole measurement. The lights themselves measure 3-7/8 inches long, 2 inches wide, and 1 inch deep....
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• Is the Optronics LED Trailer Clearance and Side Marker Light # MCL44AB1 a 1 Wire Light?
  Hello Jeremy. Yes, the Optronics LED Trailer Clearance and Side Marker Light w/ Reflex Reflector - 6 Diodes - Amber Lens # MCL44AB1 is a one wire light. You only need to connect the one wire that is coming out of the back.
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• Recommended LED Trailer Lights In Amber
  It looks like you need the Rectangular LED Trailer Clearance, Side Marker Light with Reflector, 2 Wire, 6 Diode - Amber # MCL44AB, # MCL44AB1, or something similar like the Bargman LED Clearance/Side Marker Light - 59 Series - Amber - White Base # 47-59-002. The only way to tell the correct fit is if you have the dimensions you want and then to see what is available. I've linked the page to all your Amber LED options to assist but I'm happy to assist if you have those dimensions. The...
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• Replacement Housings For The GloLight 118a And 117r Trailer Clearance Lights
  We have both the replacement lens and assemblies for the GloLight 118a and GloLight 117r trailer clearance lights. They are available in both an incandescent part # MC44AB and an LED part # MCL44AB1 bulb for the amber lights. For the red lights, you will need part # MC44RB for the incandescent bulbs and part # MCL44RB for the LED version. The replacement lens assemblies for the amber housings is part # A44AB whereas the replacement lens for the red housings is part # A44RB.
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• What Gauge Wire To Use For Lighting On A Box Truck
  For that I recommend using either a 14 or 16 gauge wire. Either will able to safely handle the amp load for the lights on your box truck. We offer the # DW02412-1 for a 14 gauge or the # 16-1-1 for a 16 gauge wire. Both are sold by the foot.
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• Difference Between 1 and 2 Wire Trailer Clearance Lights
  If where you plan to mount the clearance lights is metal that touches the trailer frame then a 1 wire clearance light would work just fine. The difference between the 1 wire and 2 wire lights is that the 1 wire lights ground through their mounting hardware and the 2 wire lights have to be run to a metal surface of the trailer that touches the frame or to the main ground of the trailer.
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• Replacement Single Wire Trailer Lights that Measure 4 by 1-1/4 Inches
  We have a couple of lights that are just like that. We have a red clearance light, # MCL44RB1, and an amber clearance light, # MCL44AB1. Both are single wire LED lights that measure 4 by 1-1/4 by 15/16 inches.
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• Replacement Red and Amber Lenses for MC44 Series and BA44 Series Trailer Lights
  For just the replacement lens for the Optronics LED Trailer Clearance or Side Marker Light Red Lens item # MCL44RB1 you will want the Replacement Red Lens for MC44 Series and BA44 Series Trailer Lights item # A44RB. For just the replacement lens for the Optronics LED Trailer Clearance and Side Marker Light item # MCL44AB1 you will want the Replacement Amber Lens for MC44 Series and BA44 Series Trailer Lights item # A44AB.
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• One Wire Clearance and Side Marker Light Options to Replace Lights on Horton Hauler Trailer
  We have quite a few different options for trailer clearance lights with one wire and that will ground through the mounting hardware. These lights come in various sizes and shapes. The best replacement for your trailer will depend on the size light you are wanting to replace. For a small LED clearance light that is a stud-mount, you can use the Optronics Sealed Mini Rectangular LED Stud Mount Trailer Clearance Light. For an amber light you will want # MCL95AB and for a red light # MCL95RB....
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• Replacing 2 Wire Marker Lights With Single Wire Marker Lights
  On lights similar to the Optronics LED Trailer Clearance and Side Marker Light # MCL44AB1 that will only have 1 wire pigtail this is the positive power wire. The light requires mounting to a grounded metal surface that will provide you the ground connection. If you are not able to attach it to a grounded metal surface you can also use a jumper Wire # DW02359-1 with a Ring Terminal # DW05737-1 to attach to your existing wiring or a nearby grounded surface. There are some lights similar...
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• Red Version of Amber Clearance Light # MCL44AB1
  Yes, we have the red version of the # MCL44AB1 as part # MCL44RB1.
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• Looking For Side Marker Light Lens For Horton Hauler Enclosed Trailer
  Hey Shawn, thanks for reaching out. We may have a lens that will work for you, and I am happy to look into it. Is there any identifying part number on your lights that you can see? If not, you can go ahead and email those pictures to me at [email protected] and I can take a look. Hopefully we have the lens you need. If not, the next step would be to look at replacing the light entirely with something like the Optronics LED Trailer Clearance and Side Marker Light w/ Reflex Reflector...
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• Troubleshooting Single Wire Trailer Marker Lights Only Running On Turn Signals and Brake Lights
  It sounds like you have some marker lights like the Optronics # MCL44AB1 which was only designed to activate when the running lights are switched on. If you also want the lights to illuminate with turn signals and brakes you would want the Peterson # M353A which has 3 wires. One ground and one for running lights and the 3rd wire for the turn/brake light. The single wire light you have uses the mounting hardware to ground to the trailer chassis. This would be connected to the running lights...
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