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Aero Pro LED Trailer Light Kit for Trailers Over 80" Wide - Submersible - Driver and Passenger

Aero Pro LED Trailer Light Kit for Trailers Over 80" Wide - Submersible - Driver and Passenger

Item # TLL36RK
Our Price: $95.15
Trailer Lights
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Optronics Tail Lights - TLL36RK
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Waterproof trailer light kit includes 2 combination tail lights and 2 clearance or side marker lights to serve 8 functions on trailers wider than 80". Universal mount with stainless steel hardware. 25' Harness with 4-pole connection. Great Prices for the best trailer lights from Optronics. Aero Pro LED Trailer Light Kit for Trailers Over 80" Wide - Submersible - Driver and Passenger part number TLL36RK can be ordered online at or call 1-800-940-8924 for expert service.
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Optronics Trailer Lights - TLL36RK

  • Tail Lights
  • Rectangle
  • Kit
  • LED Light
  • Red and Amber
  • 8L x 3W Inch
  • Surface Mount
  • Stop/Turn/Tail
  • Side Marker
  • Rear Clearance
  • Side Reflector
  • Rear Reflector
  • License Plate
  • Submersible Lights
  • Optronics

Waterproof trailer light kit includes 2 combination tail lights and 2 clearance or side marker lights to serve 8 functions on trailers wider than 80". Universal mount with stainless steel hardware. 25' Harness with 4-pole connection.


  • Combination trailer light kit serves 8 functions when properly mounted on trailers over 80" wide
    • Stop, turn, tail, side marker, rear clearance, side reflector, rear reflector, and license plate light
    • Great for marine trailer applications
  • 2 Aero Pro Combination LED tail lights (STL36RB and STL37RB)
    • Driver's-side light includes license illuminator
  • 2 Sidemarker and clearance lights (MCL91AK)
    • Single wire design grounds through mounting hardware
    • Plastic base with chrome finish
    • Gaskets for weathertight seal
  • Sealed, waterproof construction is submersible
  • LEDs makegreat replacement for incandescent lights
    • Last 50 times longer
    • More efficient - provide better light with less power output
    • No bulbs to replace - no brittle filaments
  • Durable polycarbonate housing and acrylic lens
  • Corrosion-resistant license plate bracket
  • Universal mount
    • Stainless steel mounting hardware
  • 25' Wiring harness with 4-pole connector
  • P2 rated clearance/marker lights
  • DOT approved


  • Application: trailers over 80" wide
  • Dimensions of combination tail lights (STL36RB and STL37RB): 7-7/8" long x 3-1/4" wide x 2-7/8" deep
  • Dimensions of clearance and side marker lights (MCL91AK): 2-1/2" long x 1-1/4" wide x 7/8" deep
    • Dimensions with bracket: 2-7/8" long x 1-1/2" wide x 1-1/4" deep
  • Diodes:
    • Driver side tail light: 23
    • Passenger side tail light: 17
    • Side marker and clearance light: 3 per light
  • Lifetime warranty on LEDs

Optronics TLL36RK Aero Pro LED Trailer Light Kit for Trailers Over 80 Inch Wide Diagram

Note: Over 80" Federal Regulations require additional clearance lights (like MCL93RB or MCL84RB - sold separately). Also, if using with a tilting trailer you may need to route a separate ground wire from the clearance lights to a metal part of the trailer frame since tilting trailers sometimes use rubber isolators in the tilting mechanism.

Sealed, Waterproof Trailer Light

The waterproof construction of this light makes it ideal for use on trailers that may be submerged, like a boat trailer. The circuit board is sealed, which means that water will not damage the diodes or circuit board.

Combination Lights for Trailers Over 80" Wide

Flatbed trailer over 80" wide with combination tail lights

If a trailer is 80" or wider at its widest point, then it requires rear clearance lights in addition to basic trailer lights. These clearance lights indicate the width of the trailer when it is viewed from the back.

To meet these requirements on a flatbed utility trailer where the bed extends past the wheels, you can install combination trailer lights that include the rear clearance function. For proper mounting, the lights must be installed at the widest points on the rear of the trailer - one on each corner.

P2-Rated Lights

Diagram of light spread for P2 rated light

A P2-rated light produces a 45-degree angle of light to either side of its centerline for a total of 90 degrees of coverage. This beam pattern can be seen straight on, but it cannot be seen clearly from the side. So this type of light can be used as either a side marker light or a clearance light, but it cannot function as both. If you need both functions, then you must install 2 separate lights on your trailer - one as a front or rear clearance light and one as a side marker light.

TLL36RK Optronics Aero Pro LED Combination Tail Light Kit for Marine Trailers over 80" Wide - Submersible - Red Lens - Driver and Passenger Side - 25 Ft Harness

Alternate part number: TLL-36RK

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Aero Pro LED Trailer Light Kit for Trailers Over 80" Wide - Submersible - Driver and Passenger - TLL36RK

Average Customer Rating:  4.7 out of 5 stars   (273 Customer Reviews)

Waterproof trailer light kit includes 2 combination tail lights and 2 clearance or side marker lights to serve 8 functions on trailers wider than 80". Universal mount with stainless steel hardware. 25' Harness with 4-pole connection.


I purchased these lights to replace and upgrade the incandescent set that came on a 20’ boat trailer. I chose this set because I liked the way the taillight side markers protrude out rather than being flat. I felt that this would help with visibility at night. The only thing I’m not particularly fond of is the way the amber marker lights that came with the set are designed. The light itself I like. It uses a plug in wire design rather than a sealed wire that is already attached like the taillights. It’s more or less a matter of preference. I mounted these on the fenders facing forward to help see where the trailer is in dark and rainy weather.

I’m still happy with the product and would recommend it to future buyers.
Charlie - 07/03/2019


Quality Product, Easy Mount, Larger than normal, but they are replacing my Vehicle's Brake & Running lights. When the Bikes are mounted on the rack, they cover the Vehicle's lights. The first photo without the Bike was taken after the lights were mounted.The second photo with the Bike on the rack was photoshoped, as part of the planning process to mount the lights.

Lights are working great, excellent product
Albert - 05/09/2020


Works well and overall nice kit, I just can't wrap my brain around the fact some of the wiring stays exposed on a trailer light kit designed as submersible. Just a matter of short time before it corrodes especially if submersed in saltwater/brackish water.

You can cap off any unused wires. Also, using heat shrink butt connectors like item # DW05745-10
Deka Heat Shrink Butt Connector - 12-10 Gauge - Nylon Insulation - Yellow - Qty 10
, is a good way to keep water out of your connections.
-- Etrailer Expert Sierra K - 07/12/2022


Looking to be noticed at night? Well these are the lights! I mounted these to a PWC trailer, boy did it make a difference! Everything is provided with this kit if you are starting from scratch, or just replacing existing similar lights. Very pleased with how bright these lights are.


This has been a great upgrade to my boat trailer. After I upgraded my truck lights to LEDs I needed a good set of compatible lights for my trailer. These were it! Very easy to install, came with new, complete, color coded wiring harness. Got it done in about an hour.
Thanks! Great product!


Good product. The amber side lights are a little flimsy but it all works for what I need.


After installing a wiring harness on my Honda Fit (which was fairly tricky!) I enlisted the help of my father and uncle to help me install this on a small ancient boat trailer for a newly built sailing dinghy. Installation was a breeze but we did have a hell of a time creating a good grounding contact with the trailer. On a newer trailer, this likely would have been easier. I would also recommend just wiring a full ground from the wiring harness at the car end and not messing with a metal-on-metal contact. I trailer and launch my boat in salt and fresh water and maintaining that ground connection throughout a season of regular use has proved challenging! The lights never come on at first but then bounce on after I go over a few bumps and stay on. The lighting kit has been great and I've had no problems whatsoever, just the standard issues of keeping the rust off the ground contacts and keeping the wiring in good shape as it's mounted on the outside of (round!) trailer supports. etc. The lights are bright and look nice and haven't filled with water or had any problems. You may need to invest in some larger/sturdier zip ties if you end up needing to run this on the outside of your trailer versus threading it through the frame.


Order was processed and shipped quickly. Arrived as scheduled. Installed easily and functioned as expected. Installation instructions were poor, but I'm an electrician so that was no issue. I recommend this product and etrailer as a supplier.


Excellent lights very visible on my trailer.
I would buy them again.


Looks like a quality product. Quick shipping,great communication. Always a goog experience with etrailer


I recently decided to replace my existing lights with LED's on an enclosed 5 x10 ATV/Motorcycle trailer. This kit worked great for the job. Install was simple for the most part, but may require some small modifications based on existing wire and lighting locations. Lights are very bright and make trailering a breeze. The only reason I gave it 4 stars was that it was short several pieces of the install hardware and I chose to improvise rather than contact Etrailer customer service and wait for replacements. Certainly recommend and will be a returning customer.


Nice lights, they work well on my flatbed trailer


These fit my 1998 Ranger r91 sport boat trailer perfectly and a re a great upgrade. The screws needed to be pushed all the way to the very top of the channels and the lights look like they are a factory fit.
Easy to install and a great product!


There seems to be some confusion (myself included) about the spacing of the mounting channels on the rear of the tail lights.

So gather round and learn from my mistakes:

ALL of the spacing between channels is 2". The difference is the distances from the channel to the side of the lamp assembly!

Note the attached picture. The bottom lamp is for an over 80" trailer and the top is the one I mistakenly purchased. NOTE THE DIFFERENCES FROM THE SCREWS TO THE EDGES OF THE LAMP. BIG DIFFERENCE! Also note that the over 80 lamp (bottom) is shaped differently on the right side, while the top under 80 lamp has straight sides.

Happy trailering!



Great quality. Bought these for my duck boat trailer. Lights and wiring were shot. Just an FYI, at least with the wiring harness I bought there was no ground wire. All of these led lights needed to be grounded to the trailer. Not a huge deal, just different from other trailers I have rewired.


After a year the LED trailer light is as bright as the day that I installed it.
Good service and good price. I would use this product again!


The instruction sheet on how to install is weak. A few diagrams or pictures would be worth a thousand words.


Great kit! Adapted to an older PWC trailer no problem. Very bright, and sharp! Kit includes everything needed for a install from scratch.


Product arrived as ordered and on time.

Once installed, everything works and looks great.

1) Installation istructions included with the kit were a bit limited at times, especially if you had never done this sort of thing before (like me). For example the instructions to install the base-snap-on post-style amber marker lights were OK but not explicit in terms of pointing out that it's important to orient the light the right way before snapping it in place. Again, a reasonably bright person can figure it out, but a bit more guidance would have been helpful.
2) Kit does not include the three rear clearance LEDs to replace the ones on my trailer. It is clear that these are not in the kit and I'm not dinging for this. Just know that if you want to replace these, you are on your own to find them. For me it was a bit of a challenge since I wanted LED versions that fit where the old ones went without drilling new holes. I needed ones with mounting 'ears' with holes 2 3/4 inches on center. I found what I needed at a local retailer. To the credit of, this website is great in that specs like mounting hole spacing is usually right there for you. In searching online for the clearance lights I wanted many sites don't put that sort of info up for you. Bravo to etrailers!

Don't let the 'cons' I listed dissuade you. This seems to be a good product (I haven't put the trailer in the water yet...), installation was pretty easy, and has good online info to help in most cases.

These trailer lights are awesome! They work and look great and seem to be well sealed. After many trips to the lake they still look brand new with no sign of water entry. LED is the way to go.
Steve W - 06/04/2014


Well made product overall. I would have a few suggestions for the manufacture though. First the screws that came with it were not self tappers as described in the instructions. Luckily this was replacing old busted lights and no new holes needed to be drilled. Second the connections for the main wires to the wires on lights them selves should not be done with wire nuts. Luckily I had some heat shrink connectors . I launch my boat primarily is salt and brackish water and know hot gas saltwater can eat through most metals. Plus no submersible trailer should have connections with wire nuts. Third both sides should have clear back up lights on bottom of lights not just driver side I don't know about most people but I do use both mirrors backing up and most every one of my back downs take place well before daylight since this was for my duck hunting boat.

Well, that light is for the license plate, NOT for back up lighting. Thought Id clarify that.
-- comment by: Ashley J - 11/09/2015


Tremendous product at a great price. This lights arrived before promised, well packaged, with all parts and undamaged. Installation was relatively easy; I routed the wire through the boat trailer frame instead of on the frame as described in the instructions. There was enough wire included for my 17.5' boat trailer. The lights are bright, well sealed and sturdy. They were dunked many times during last summer fishing season I had no problems. Highly recommend. I will be putting the same set on a utility trailer.

Still working perfectly. The lenses show no oxidation, wiring and connectors all holding up well. Still very happy with my purchase.
Craig S - 04/04/2018


These lights worked perfectly and are quite bright. I had spent days trying to figure out why my turn signals would not work with my previous incandescent lights(on a new utility trailer. I even tried three different new incandescent trailer light sets and two new converters) when a tech at suggested I try an LED trailer light set. This set worked as soon as I hooked them up. Wish I had been smart enough to buy these LEDs in the first place. Would have saved me a great amount of frustration and expense. My guess is that my car's electrical system and/or the converter could not handle the extra current of the incandescent light sets.

Probably needed a heavy duty flasher to get the turn signals to work on the incandescent lighting or a trailer wiring kit for your application of vehicle. Installed a harness kit on a 2013 Chrysler Town and Country van that had a circuit built into the wiring kit.
-- comment by: Clarence - 08/14/2014


Fantastic product! RANGER BOAT did not have a viable LED retrofit for my particular year trailer, nor did they have a suggestion. I measured my boat , and ordered these. I had to drill new holes, but was VERY easy to install these, and they look GREAT! No more burning out bulbs for this guy. I am a electrician, so the re-splicing of the wires wasn't an issue at all. I think that even if I was not, the directions are very easy to follow. I would recommend that you get some "HEAT SHRINK TUBE " to put over your connections.

Still working perfectly.
John D - 03/23/2018


These lights work very well. They are bright and easy to install. I would purchase them again.


I needed to completely rewire an older boat trailer that I was rehabbing and wanted to upgrade the lights to brighter LEDs. This kit fit the bill perfectly. It was easy to install and looks great. A couple of tips... 1) Take your time and preplan your wire routes and light mounting points. 2) Watch for rub points where the wire goes through the frame or around bends and reinforce those spots with cable covers. 3) Use lots of wire frame clips to keep the wiring in place and out of trouble. 4) Try to avoid using crimp connectors if possible, especially on any connection that’s going under water. Take the time to solder the connections and use marine-grade shrink tubing to seal everything up tight. Time spent doing the job right will save you tons of time trying to chase a loose or corroded connection down the road. 5) Make sure your ground connections to the frame are clean, tight and secure. Use multiple grounds if possible.

With the above tips, the harness went in smoothly, worked great the first time and makes the boat a lot more visible on the highway. A year in and everything is working great after a very busy boating season.

Show More Reviews

See what our Experts say about this Optronics Trailer Lights

  • Is Using Junction Box Better Than Splicing Wiring When Wiring A Trailer
    Sounds like you have a solid plan in place for your wiring on your trailer. I am sure you have already received it but I am attaching a link to our helpful article that explains trailer wiring you can check out. Any time you can avoid splicing into the wiring you reduce the possibility of corrosion or loose wires. You will want to make sure you have each light properly grounded to a clean, bare metal surface. If you use the connectors and terminals as you described, I am certain you will...
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  • Amber Marker Lights Not Working in Optronics Aero Pro LED Trailer Light Kit # TLL36RK
    The red tail lights included in the Optronics Aero Pro LED Trailer Light Kit # TLL36RK include a separate white ground wire with ring terminal to make their ground connection. However, the amber side marker lights use one of their mounting screws to establish the ground connection to your trailer. This kit includes stainless-steel mounting hardware designed to help make a good electrical connection. Please refer to the linked photo which shows the rear of the amber side marker light assembly....
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    Image 1 for
  • LED Trailer Tail Lights Do Not Work When Vehicle Headlights Are Turned On
    The problem you are having with your trailer lighting - stop and turn signals stop working when the vehicle headlights are turned on - is most often related to an issue with the ground. Trailer running lights, which are on continuously whenever the vehicle headlights are on, will draw more current than brake lights and turn signals which come on only when those functions are activated. If the ground connection (either the main trailer connector's ground or the grounds at the light fixtures...
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  • Troubleshooting Dim Trailer Lights and Blinkers Heard Through Stereo Speakers
    Sounds like a weak ground. You could try changing your ground point for the stereo and the taillight converter, if that doesn't work to stop the noise through your speakers you will need to find a filter or noise suppresor from an electronics store like Radio Shack. Finding a better ground should fix the problem though. This will also help with the wrong blinker lightly illuminating and the lights not being very bright.
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  • Troubleshooting Trailer Brakes not Working After Installing a New 7-Way
    Most likely the problem is in the wiring of the 7-way itself. Since the brake controller stopped working after wiring in the new 7-way, that is most likely where the problem is. Especially since the fuses look good. Inspect the wiring of the 7-way, particularly the connections you made to install it and you should find the problem and be able to fix it. There might be an exposed wire that is shorting out, or the circuit isn't making a good connection. I attached an FAQ article on troubleshooting...
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  • Side Marker Lights Are Causing a Short on the Trailer
    The side markers that are included with the LED Wiring Kit, # TLL36RK, install exactly as you have described. The issue definitely sounds like a short, as you mentioned, if you are blowing a fuse. The short could be cause by the connector from the short black power wire for the clearance light touching the trailer frame. I made a short video explaining what I am talking about. The solution for this would be to drill a hole in the frame large enough so the connector does not touch the frame....
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  • What Hole Size Required for Self-Grounding Chrome Base on Optronics Trailer Light Kit # TLL36RK
    The amber clearance lights included in Optronics Trailer Lighting Kit # TLL36RK incorporate a metal tab to make one of the electrical contacts. That tab is intended to make contact with the supplied stainless-steel mounting hardware. Since the light base is non-metallic (it is chrome-finished plastic) that metal tab provides the contact point. I pulled a sample of the light kit to measure the mounting hole diameter for the amber lights. The hole diameter for these clearance lights is 0.2...
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  • Some of the Diodes Not Lighting Up on Newly Installed LED Trailer Tail Lights
    There is either an internal problem with the LEDs themselves or there is a bad ground so that the circuit is not 100 percent completed causing only some of the diodes to light up. Many boat trailers use aluminum frames which do not offer the best ground. I recommend extending the ground up to the main trailer connector ground or to a steel component such as the axle. If this does not solve the issue then there is likely a problem with the LEDs themselves and the tail lights will need to...
    view full answer...
  • If Optronics Trailer Light Kit TLL9RK is Waterproof Why Have Large Holes that Allow Water In
    The assemblies are designed to allow water to enter into them but the light fixtures in the assemblies are sealed so the water will not cause any problems. Basically the holes are there to ensure the water will easily drain out once the trailer drives up the boat ramp.
    view full answer...
  • Are Marker Lights on the Aero Pro LED Trailer Light Kit Submersible
    I verified with Optronics and the two amber marker lights, included with # TLL36RK are submersible.
    view full answer...
  • All Lights on Trailer Working Except Rear Running Lights
    It is possible that the short blew the tail lights on the trailer. If they were incandescent lights and you have access to the bulbs could see if the bulbs are burned out. But on LED lights the circuitry could be fried and it is harder to test that. but you could apply 12 volt power directly at the lights' running light wires and if they do not light up it could mean the circuits are burned out. It could also be a ground problem. Ground problems normally show up when there is more draw...
    view full answer...
  • How Do the Lights in Trailer Light Kit, # TLL36RK Mount to the Trailer
    The Waterproof, Over 80 Inch Aero Pro LED Trailer Light Kit w 25 Foot Wiring Harness, # TLL36RK, comes with the necessary hardware to mount the lights to the trailer. The taillights do mount to the trailer using two bolts, two washers, and two nuts each. The smaller clearance lights mount to the trailer using two screws each. You can take a look at all of the hardware included in the kit by clicking on the last picture on the product page. Roll your mouse over the picture to zoom in.
    view full answer...
  • Distance Between Mounting Slots on the Optronics Trailer Light Kit # TLL36RK
    I went out into our warehouse and pulled an Optronics Trailer Light # TLL36RK to measure the mounting slots and found that they are 2 inches on center. Check out the picture I attached to see the measurements. The amber side marker lights are also LED bulbs.
    view full answer...
    Image 1 for
  • What Are Dimensions of Mounting Slots on Optronics Trailer Light # TLL36RK
    The lights will mount using screws that will slide into the slots on the black base of the lights. The distance between the mounting slots on the Optronics Trailer Light # TLL36RK, measure 2 inches on center. Checkout the picture that I have included showing these dimensions.
    view full answer...
    Image 1 for
  • Is Water Supposed to be Able to Get in and Drain Out of the LED Trailer Light Kit, # TLL36RK
    A submersible trailer light will have holes in it to allow water to come in and drain back out again. There is another type of light, a sealed unit, that is not supposed to let water in it. The amber lights in kit # TLL36RK, are sealed lights, but the tail lights are not sealed units. It does sound like they are working as they are supposed to. Just make sure that your wiring connections are waterproof!
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  • Adding 2 Wire LED Clearance Lights to a Boat Trailer
    First, if you are switching to LED lights on the trailer, make sure to replace all of the incandescents with LEDs. Mixing the two styles can result in some of the lights not working and/or malfunctions. Clearance lights, LED or otherwise, that have 2 wires use one wire for power and the other is the ground that attaches to the trailer frame. Clearance lights run off of the running light circuit, the brown wire if you are looking at trailer light kit # TLL36RK. The wires from the old lights...
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  • How to Mount the Optronics Over 80 Inch Aero Trailer Light Kit # TLL36RK
    The Optronics Over 80 Inch Aero Trailer Light Kit, # TLL36RK, was designed to mount to existing light brackets on boat trailers or to surface mount on the back of a trailer frame or fender, so we do not carry replacement brackets designed to fit these lights. Your best option would be to have an L bracket welded to the side of your trailer frame that is large enough to hold the light (7-7/8" L x 3-1/4" W x 2-7/8" D) if you have a boat trailer or utility trailer. If you have an enclosed...
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  • Troubleshooting Trailer Lights That Blow Fuses When Connected to Tow Vehicle
    If each light assembly is grounded individually there won't be an issue with mixing LEDs and incandescent bulbs on a trailer. What is most likely happening is that the trailer light circuit is shorting out somewhere on the trailer frame due to exposed wire touching the trailer frame. That is most likely why your fuse is popping. The main ground strap from your trailer frame to your trailer connector needs to be connected to a clean metal surface. The light assemblies ground to the trailer...
    view full answer...
  • New Blazer Brand Trailer Tail Light Only has 2 Wires But Old Peterson Light had 3 Wires
    If you look at the back of the tail light assembly you purchased it should tell you the functions of the wires. My guess is that your old light had a separate ground wire and the new one grounds through the mounting studs so it doesn't have a ground wire. You can email me some pictures of the light you want to wire in or tell me the the model number and I should be able to tell you for sure how it wires in.
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  • Troubleshooting Installation of Optronics Trailer Tail Light Kit TLL36RK
    The first thing you can check on your trailer tail light installation with Optronics kit # TLL36RK is the ground wire, which is the white wire. A bad ground will prevent operation of all lights. This white wire from the 4-pole flat connector must be firmly attached to a clean bare metal surface on the trailer frame. You can try sanding off any paint or rust to get down to the bare metal. Make sure the white ground wire is very firmly secured to the trailer frame. You also need to ensure...
    view full answer...
  • Troubleshooting Low Voltage/Dim LED Trailer Lights from New Harness
    You will need to get at or very near 12 volts in order for the Optronics Trailer Light Kit part # TLL36RK to illuminate properly. What I would recommend you first do is check the grounds of the trailer and the assemblies themselves. You want to make sure the main trailer ground is connected to a clean metal surface on the trailer frame. This is the ground strap that runs from the connector on your trailer to the frame. The ground wires of the assemblies need to be connected to a clean...
    view full answer...
  • Trailer Keeps Blowing Running Light Fuse on Tow Vehicle Even Though All Wiring is New
    There is definitely a short somewhere or some major back feeding that is causing that running light circuit on the tow vehicle to blow. Usually this is caused by a frayed wire touching bare metal. Even though your wiring is new it is possible that when the skin was put on some wires got pinched but allowed the wiring to work for awhile. After a few trips towing the trailer and it moving around while traveling the wires could have gotten rubbed and frayed causing the short. Another possible...
    view full answer...
    Image 1 for
  • What is the Difference Between Submersible and Waterproof Taillights
    When a taillight is classed as waterproof, it is covered or treated with a material to prevent water from penetrating it. It does not allow water to enter or pass through therefore the taillight is not affected. A submersible taillight is designed to be submerged and usually contains a small hole at it's lowest point to allow water to drain out. It sounds like you have taken the appropriate steps to ensure that your electrical connections stay dry. Although the Aero Pro LED Trailer Light...
    view full answer...
  • Do Trailer Light Blinker Circuits Override Running Light Circuit
    Trailer taillights that carry the stop/turn signals and the running light circuits have two intensities. A bright and a lower intensity. The stop/turn circuit always has the brighter circuit and the running light has the dimmer of the two. Let's say you have the brakes and running lights on and you turn on a blinker. The taillight on the side of the vehicle with the blinker on will flash from the brighter illumination to the dimmer illumination. If the running lights weren't on it would...
    view full answer...

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Chris R

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