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Vehicle to Vehicle Tail Light Converter

Vehicle to Vehicle Tail Light Converter

Item # 118158
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Tow Ready Wiring - 118158
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Used when a motorhome with a 2-wire system is towing another vehicle with a 3-wire system, by way of a tow bar. Lowest Prices for the best wiring from Tow Ready. Vehicle to Vehicle Tail Light Converter part number 118158 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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Tow Ready Wiring - 118158

  • Trailer Connectors
  • Converters
  • Tow Ready
  • 2-to-3 Converter

Used when a motorhome with a 2-wire system is towing another vehicle with a 3-wire system, by way of a tow bar.


Features:

  • Used when a motorhome is towing another vehicle by way of a tow bar
    • If the towing vehicle has a 2-wire system and the vehicle being towed is on a 3-wire system (the vehicle has amber turn signals, separate from the brake signals), the vehicle to vehicle tail light converter will need to be used
  • This item cannot be installed backwards (the input going to the output side) to convert a tow vehicle down
  • Will not work with vehicles that have LED tail lights
  • Limited 1-year warranty


Note: You will need to install a tail light isolating diode system (38955) and 2 additional diodes (RM-792) with this tail light converter to prevent electrical feedback when flat towing a vehicle. Vehicles with separate turn signals and brake lights will need a total of 6 diodes.



118158 Vehicle to Vehicle Taillight Converter

Replaces 31820

Installation Details 118158 Installation instructions


California residents: click here



Customer Reviews

Vehicle to Vehicle Tail Light Converter - 118158

Average Customer Rating:  4.8 out of 5 stars   (111 Customer Reviews)

Used when a motorhome with a 2-wire system is towing another vehicle with a 3-wire system, by way of a tow bar.

- 118158
by:

This product works well with some thought and acknowledgement that it has limitations. I have just bought my second one. The previous one failed after five years. This new one etrailer recommend the use of diodes to prevent feedback to the towing vehicle. This is not a bad idea but was not previously available. The circuit diagram that comes with this unit was misleading to me. Eventually I figured it out and will passon what I learned. My trailer has separate orange indicators. It is wired as all my trailers are with a seven way plug. You will see each diode having three connections. Two from the towing vehicle and one to the indicator bulbs. I just used one of the diode input tags connected to the appropriate wire from the seven way. The output I fed to the indicator bulbs. I have three indicators on each side of the trailer and they can all run off of the same tab. I am enclosing a few pictures. The first one is the old unit which was housed in a separate box screwed to the chassis. Then I had a second box which held all the connections. The second picture shows the new unit contained in its own box with the five diodes used. The box is just a plastic project box from Radio Shack. The last picture is of the finished unit all sealed and ready to go. Now for those limitations. Do not expect this to work as though it were an extension of a four wire vehicle. The indicators will work and the brake lights work BUT the indicators go off when the brake is applied. The unit cannot run the separate indicator and the brake at the same time.



- 118158
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I installed a European 13pin receiver on a 2018 Ford Explorer and stowed the wiring adapter under the vehicle. Worked flawlessly so far with caravans and bike carriers.


Comments
Still working flawlessly, even with lots of snow, ice and sludge
Christian G - 03/01/2021


- 118158
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Used to add little LED marker turn lights on the corners to vintage two circuit airstream trailer. The led corner lights now are red running at night, red stopping by day and switch to yellow, when turning, day or night.



- 118158
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Worked just like we needed it to. We used it for LED lights on a trailer we built and so had to add a tiny DC to DC voltage regulator to each light circuit. Use one with 12 Vdc output with as low as 5 Vdc input. Works good!



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by:

I gave up trying to find a wire to tap for a third brake light on a 2013 GMC Sierra, so I ordered a 2 to 3 wire adapter ( #118158) as recommended by you expert Michael H. He stated that only one of the inputs was needed, but both Left and Right turn were required to make mine work at all. That aside, the product was received quickly and installation was simple using the enclosed diagrams. I have never seen anything mentioned anywhere about waterproofing undervehicle connections. I do and they last for years.


Comments
Does the 3rd brake light flash when using the hazard lights?
-- comment by: Sam - 05/06/2015


Comments
Yes, emergency flashers will flash the third light also.
-- comment by: - 05/24/2015



- 118158
by:

This converter is exactly what I needed to upgrade my 99 F350 tail lights to LED! The instructions are clear and straight forward. And I didn't need to modify any other part of the truck's wiring. (LED's themselves require a load resister wired in parallel to reduce the electrical current for slowing the flash rate.) Aside from that, this successfully separated the turn signal and brake wires.



- 118158
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This unit made it possible to split up the single wire for the brake and signal. Then made them 2 separate signals so i could hook up a 3 light trailer very nice



- 118158
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This converter worked great for what I intended it for. I was wanting to add a third brake light to back of my fifth wheel trailer. I purchased STL179RB Glolight Thinline LED also. I tried to wire this direct. It won't work, it flashes when you turn the turn signal on. A friend of mine recommended this after doing a search on the etrailer website. Etrailer support recommendation was installing two lights. Duh! that's why I wanted a third brake light, I already have two lights that function as stop/tail/turn. The installation in these pictures is not complete. I was trying to avoid drilling holes in the back of my trailer, I still may have to. I am going to enclose the wires going up the trailer to the light in some white wire loom. The light at present is secured with only white RTV, not sure that will hold. I'm still trying to avoid drilling new holes, may have to though. I hooked up all the wires on the input side, white to ground, green to right stop/turn, yellow to left stop/turn. I hooked only the red wire to red wire of the light on the output side. I hooked the ground (white wire) of light to input side of converter. Yes, it works and no it does not blink when either blinker is turned on. The additional two wires on the output side of converter are not being used nor is the additional wire of the light. Sorry for the long review, don't usually write reviews at all. Anyway, if this will help even one person it will be worth it.



- 118158
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I use Optronics oval LED lighting exclusively and I don't think this was made to work with them because of the rapid response of the LEDs. I use this so that on a 4 wire system I can have turn signals on the side of the trailer. When you first hit the brakes, there is a fast blip of light from the side marker/turn signals. With an incandescent bulb it would be too fast to light the bulb. This is something I can live with. I think this works great with no problems so far.



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by:

First off the customer service at etrailer is by far the best that I have dealt with. If I had a question, they sent me an email response very quickly. Secondly, the shipping is extremely fast. I placed the order and it came to an APO AE address (military stationed in Germany) via USPS Priority Mail and it arrived in like 5-7 days, I was shocked when it arrived, because I was expecting at least another 3 or 4 days. So, as far as the product. Works great and was just what was needed. Project was to make an adapter that I could plug into my 2017 Jeep Grand Cherokee U.S. spec and use a German trailer. My friend did all of the wiring and made the adapter, so I do not take any credit for any of it. Just sharing this, to those trying to figure out if it can be done. Moving on, the adapter is a 7 pin/blade normal American plug that goes into the back of the JGC and the other end of the adapter is the 13 pin German (European) socket. We tried it without this product and all worked except when you hit the brakes the brake lights were faded and the blinker lights were lit up as if they were the brake lights. So, had to get this product and separate the brake/blinker light on the American side and have separate brake and turn wires on the German side. Put this product between the two in the middle of the adapter, wired it up and all works great! I used 2 zip ties around the product and a bunch of electrical tape to hold it to the adapter, at least to give it a better look. Now I only have to plug in the adapter whenever I use a German trailer and all works correct. When done towing, remove the adapter and everything is back to the American system. Did not have to cut/splice or do anything to the wires on the JGC or the trailer, all was done at the adapter. Thanks again to etrailer for providing awesome customer support and shipping! Jeff



- 118158
by:

Interested in adding a third light up higher on your trailer for additional visibility? This product will separate the turn signal and brake signal on a four pin connector so you can add a running and brake light up higher to be visible. Simulates the third light that most cars and trucks have these days in the center of the back window. Positive for the semi-trucks visibility. You do not really think they can see the normal trailer lights 12" off the ground when following close behind or coming over a hill do you? Included a picture with just the running lights illuminated. Thank you etrailer for having the right products in stock! Most other dealers did not know what I was talking about and one even told me it was against the law. Called state highway patrol and they encouraged the additional third light! I also added the higher side running lights when semi's are merging behind you at night.



- 118158
by:

The "Vehicle To Vehicle Tail Light Converter", Item #118158 is serving my needs well. I refitted my trailer completely using all LED lights. I mounted the converter inside the "C" channel underneath my tongue mounted toolbox for a little added protection. I also soldered all connections throughout the re-wire and used heat shrink &/or liquid rubber over all connections. I feel that proper planning prevents poor performance. I ordered numerous lights from etrailer also, and all are working fine. When I chose to call them with a question about one of their products, it was answered quickly and appropriately. I am a business person, and that's customer service!



- 118158
by:

This product works as advertised, no complaints! I did have to do a little research on the different plugs as I was going from an American spec vehicle with the flat pin connector, to a European bike rack. Once I realized I needed to add a second ground wire from the vehicle to the rack, I was able to get it to work.



- 118158
by:

Shipping was fast. Installation was easy. Works as designed. Couldnt ask for a better result. Now my tow car is all wired correctly.



- 118158
by:

Added 3rd brake light to my 5th wheel. Simple connections and works great.



- 118158
by:

We got three etrailer boxes via ups today. The box with the tow bar was damaged slightly so I opened and it seems fine. A bit more reinforcement is called for to prevent shipping damage concerns. Overall purchase experience was very good. I got good answers and guidance and felt valued. I’m planning to do the install myself and I feel comfortable doing so because of all their resources.



- 118158
by:

I was looking for a way to add a third tail light to a vintage trailer and this proved to be just the ticket. Easy to install and worked great right out of the box. Plenty of communications from etrailer staff along the way. Just wish they would provide tracking info so you could plan for expected receipt date.



- 118158
by:

Put it on the truck cap to work the third light, works great.. thanks a lot



- 118158
by:

This product was used to separate the brake light signal from the turn light signal on a Ford F-350 cab/chassis with a flatbed to facilitate using amber turn signals without them illuminating when the brakes are applied (truck only, no trailer). So far they are "functioning as designed" and I'm very happy with the product.


Comments
Still working fine.
Gregory V - 10/09/2019



- 118158
by:

Great service on a part I wasn't aware was available. Was going to use a 7 pin adapter to power seperate lights on a little camp trailer. This will simplify my needs. Thanks..



- 118158
by:

I had a Roadmaster car tow package installed in 2019 for my Lincoln MKZ for towing behind the Winnebago motorhome. Everything was installed properly by etrailer and works as it should. Your company did a beautiful job with the install and I would not hesitate to get future work done by Etrailer. Thanks for a good job. See my install on the Etrailer u tube site.



- 118158
by:

Fairly easy to install, and worked as e xpected.



- 118158
by:

It does its job and was pretty easy to install.



- 118158
by:

My experience with trailer was wonderful. They told me what I needed for my situation and I ordered it and have completed my project. Tested it out and it works Great.



- 118158
by:

My taillight adapter arrived quickly, undamaged, and exactly as advertised. Prior to ordering, I emailed etrailer.com techs with a question. They responded quickly and with excellent advice. This little converter is simple to install. My trailer has a shared turn signal/brake wire. The adapter allows me to connect a lighted license plate frame that also has a third brake.


Comments
What great customer service! You guys and your products are fantastic. The items I bought are working 100
John D - 03/05/2015


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Ask the Experts about this Tow Ready Wiring

  • Adapter for Truck Wiring To Wire Third Brake Light of Camper Shell
    What you can do is use the converter box part # 118158 wired to either you taillight wiring or trailer wiring and you'll have a dedicated stoplight circuit on the red wire. If you ground the white wire and then run the green wire to the right turn circuit and the yellow to the left turn on the input side of the box the red wire on the output side of the box will have just the stoplight.
    view full answer...
  • Parts Needed to Connect European 7-Pin to U.S. 4-Way Flat
    There are a few parts you will need, and this will require you cutting off your European 7-pin. First, you'll need a U.S. 4-way, the Hopkins Endurance 4-Way Flat Trailer Connector # HM48110, along with Converter # 118158. If you take a look at the accompanying diagram, you can see exactly how to wire the converter to the 4-way and you will need to do this with Butt Connectors - 22-18 Gauge # DW05743-5 and 16-14 Gauge # DW05744-5.
    view full answer...
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  • 2-To-3 Wire Adapter To Add Amber LED Turn Signal To Truck
    I have another option but the Vehicle to Vehicle Tail Light Converter # 118158 you were looking at is not compatible with LED Lights. To convert the combined brake and turn signal wiring on your truck to separate brake and turn signal wiring I recommend the Curt 2-To-3-Wire Tail Light Converter # C56196 which we have found to work with LED lights, and will give you the dedicated turn signal wire you need to add an amber LED turn signal to your truck.
    view full answer...
  • 3 Wire to 2 Wire Converter to Combine Separate Brake Light and Turn Signal Circuits
    Vehicle to Vehicle Tail Light Converter # 118158 and the Curt version, # C56196, both take combined brake light and turn signal circuits and separate them out. You are looking for the opposite which is basically what any trailer wiring harness with a converter for a vehicle will do. If this is for a flat tow set up or an application other than towing a trailer you could use Brite-Lite converter # RM-732. If it is going on a vehicle to tow a trailer then I would need to know the year,...
    view full answer...
  • Troubleshooting Wiring on a Trailer with Separate Brake and Turn Signal Lights
    There are two things that may help to solve your predicament. The easier one is the converter. The converter that you used, part # 118158, is not compatible with LED lights. So, even if the wires all lined up where they needed to go, it wouldn't have worked anyway. We do have one that is compatible with LEDs, though. It's the Curt Converter, part # C56196. I've linked to a video review of this converter for you to look at. As for the wiring, that's a little harder to figure out. From...
    view full answer...
  • Ways to Convert Trailer to LED Type Lighting
    You can convert your RV to separate turn signals and/or LED operation in a couple of ways, depending on how much wiring modification you care to do. Any of your existing lights can be converted to LED operation by swapping out the incandescent bulbs for LED-type replacement elements. We have LED equivalents that are drop-in replacements for many popular standard bulbs. All appear on the linked page and can be selected by bulb number, such as the popular 194 type bulb # A194B that can...
    view full answer...
  • Converter Needed to Have Dedicated Stoplights and Turn Signals on Trailer Wiring
    What you need is a signal converter part # 118158 to take the combined, standard trailer wiring circuits and separate them out so that the stoplight and the turn signals are on different wires. This will give you ability to have dedicated stoplight lights and dedicated turn signals.
    view full answer...
  • Parts Needed to Add 3rd Brake Light to Small Utility Trailer with 4-Pole Wiring
    To add a 3rd brake light to a trailer's existing lighting will require a signal converter to separate out the brake signal from the turn signals that are combined by trailer wiring. You need the converter # 118158 to provide a brake-only output signal to prevent the 3rd brake light from flashing like a turn signal. In your particular application you will not need diodes but you may need a load resistor # P230004C to let the high-efficiency LED brake light function correctly with other...
    view full answer...
  • Vehicle To Vehicle Taillight Converter 118158 Buzzing Loudly
    Because the converter box of the 118158 has relays it it, it's not unusual to hear clicking but a loud buzzing noise is not normal. There's two possible causes for the buzzing, and the turn signal issue might or might not be related. Does the trailer have LED lamps? If so, the # 118158 wasn't designed with LED lamps in mind. The buzzing in this case would be caused by not enough power being drawn through the circuits, which could also be a possible cause of the turn signal issue. A poor...
    view full answer...
  • Installing Roadmaster Diode Wiring Kit # RM-15267 with Separate Wiring on RV and Towed Vehicle
    If both your motorhome and towed vehicle have a 3-wire system (separate stop and tail lights), then a converter like the Tow Ready # 118158 should not actually be needed. The converter is only needed if your motorhome has a 2-wire system (combined stop and tail lights) and your towed vehicle has the separate, 3-wire system. I have attached a wiring diagram that shows exactly how the kit should be installed for your specific application, where both the motorhome and vehicle have a separate...
    view full answer...
    Image 1 for
  • Why are Diodes Needed for Lighting when Flat Towing a Vehicle
    When a vehicle is being towed it cannot operate its own lights. The diodes are a gateway with 2 inputs and one output. One input is the regular wiring on the vehicle. The other input is from the RV. Since vehicles being flat towed will not have working lights they will have to get power to function from the RV. The diodes allow for 2 inputs so that you don't have to disconnect the vehicle lights to plug in power wires from the RV. The tow vehicle lighting system only matters if the tow...
    view full answer...
  • Trailer Lighting Options for 1962 Airstream Undergoing Renovation
    The vehicle-to-vehicle taillight converter part # 118158 will do what you want: separate the Ram's combined stop/turn signals into separate signals that can be fed to separate stop and turn lights on your vintage Airstream. This converter will not work with a vehicle that has LED lights but it WILL work on a trailer that has this high-efficiency type lighting. Vehicles with LED lights use much lower power signals along with lighter-gauge wiring that would not be able to operate the...
    view full answer...
  • Flat Towing Wiring for Suzuki Samurai with Separate Tail Lights
    Although there are two different methods of wiring a towed vehicle that uses separate turn signals, we recommend using the 6 diode kit part # 154-792-118158, which includes the converter you mentioned. I will link you to several of our flat towing FAQ articles, one of which will tell you exactly how to wire your Samurai. Refer to Option # 2 on the Diode Installation Instructions for a Dinghy with Separate Tail Light Wiring FAQ page. Keep in mind that in addition to a tow bar, base...
    view full answer...
  • How To Wire A Towed Vehicle When Both Vehicles Have Separate Stop And Turn Signals
    The Tow Ready Vehicle To Vehicle Taillight Converter, # 118158, you have referenced will not be needed since you will be staying with a 3-wire system (separate stop and tail lights)on both of your vehicles. The converter is only needed if you had a 2-wire system (combined stop and tail lights) on the towing vehicle and a 3-wire system on the vehicle being towed. I would recommend using a diode system to wire your vehicle because the diodes will prevent feedback from going from the taillights...
    view full answer...
  • Can 2-Wire to 3-Wire Tail Light Converter be Used on a Vehicle Just to Separate Signals
    You can use a 2-wire to 3-wire tail ilght converter to separte the brake and turn signals on your 2017 Jetta. I recommend using the Curt, part # C56196, because the Tow Ready, part # 118158, is not compatible with LED lights. Basically, you connect your combined right brake and turn signal wire to the green wire on the conveter's input side, and your left brake and turn signal to the yellow wire on the converter's input side. Then ground the white wire to the Jetta's frame. On...
    view full answer...
  • How to Wire a Towed Vehicle With Seperate Turn and Brake Cicuits on Towing Vehicle
    If the vehicle you are towing with has separate stop and turn signals then it will need to be wired with a Modulite converter so that it can run the lights on the vehicle you are towing that does not have separate turn signals and stop lights. If the vehicle you are towing with is already setup to tow a trailer then the Modulite converter is most likely already installed. If you are towing with the 1994 Ford Ranger mentioned above then you will need to wire it with a 4-way connector...
    view full answer...
  • Does the Vehicle to Vehicle Tail Light Converter Work with LED Lights
    Vehicle to vehicle converter # 118158 works if the TOW vehicle has regular lights and the dinghy (vehicle being towed) has LED lights. So basically the input source has to be 12 volt incandescent lights. I have linked a demo video for you.
    view full answer...
  • Installing Side Trailer Lights to Blink with Corresponding Turn Signal
    If you are wanting to install side marker lights on your motorcycle trailer that blink with the turn signal, it will need to be tapped into the turn signal/brake light wire for that side. However, just doing this will also allow the side light to come on with the brake lights. You do not want to attach it to the running light circuit, as this would back feed and force the lights to come on when they should not. Trailer have combined turn signals and brake lights and the running light...
    view full answer...
    Image 1 for
  • Can a Third Brake Light Be Added to a Trailer
    To add a third brake light to a trailer is pretty simple, but does require an adapter to convert the signal. Because trailer tail light systems combine the stop lamp and turn signals for each side onto a single circuit, you will need to use a vehicle-to-vehicle tail light converter, part # 118158 to split the brake light circuit back out. The white wire on the input side of the converter would ground to the trailer frame, the green input wire would tap into the right turn circuit...
    view full answer...
    Image 1 for
  • Trailer Wiring Converter Recommendation for Adding Third Brake Light to Trailer
    You have to use a taillight converter like the part # 118158 wired to your trailer's wiring so that you can seperate out the stop light from the turn signals. Once you do that the red wire of the box will have just the brake signal for you power the third brake light. It will not blink with the turn signals.
    view full answer...
  • 7-Way to 5-Way Adapter for a Honda Pilot with 7-Way and Trailer with 5 Pin Connector
    A 5-pin round connector is pretty rare, are you sure you do not have a 6-pin, 5 pins in a circle with one pin in the center? Having both trailers work with your 7-way connector on the Pilot will be pretty easy. You will need a 4 pole to 7-way adapter, part # PK12716. This will allow you to tow the trailer with the 4 pole connector with no problem. For your trailer with the 5 pin round connector, you will have to make a wiring modification to the trailer because of the separate brake...
    view full answer...
  • How to Add Dedicated Turn Signals to a Trailer with Combined Function Taillights
    I know what you are trying to do, and it is possible with the part # 118158. To add a separate turn signal on your trailer you would use the # 118158 to just tap into the trailer turn signal/brake light circuits but you would not interrupt the circuit that runs back to the taillight assemblies. This way the output side of the converter box will have the separate taillight signal for you to run to the additional turn signal and the rear taillights will still be combined. I attached...
    view full answer...
    Image 1 for
  • How to Wire Up Snowmobile Trailer so that it Has Separate Turn Signals from Stoplights
    I am assuming the lights ground through their mounting hardware and the two wires ran to each are for the two illuminations. One brighter and one dimmer. If you wanted to run just the running light circuit and turn signal to just one of the lights you can do this but you have to install a signal converter so that you can get the turn signals by themselves. For that you need the part # 118158 wired to your trailer's taillight wiring circuit. I attached a picture that shows how this...
    view full answer...
    Image 1 for
  • RV Brake and Towed Vehicle Brakes Both Applied via Diodes
    I spoke with my contact at TowReady and he said the brake lights will come on normally when both the brake pedal on the RV and towed vehicle via a Brake Buddy are applied. He said if either brake is pressed the brake lights will come on. When both brake pedals are pressed at the same time the brake lights will come on. He also said 2.1 amps per side is plenty to handle your CR-V's brake light. They should illuminate normally when both the RV and towed vehicle brake pedal are applied.
    view full answer...
  • Parts Needed to Connect Vehicle with 4-Pole to Trailer with 6-Way and Separate Brake Lights
    Since your vehicle's 4-pole wiring harness uses stop and turn signals that are combined on one wire, the green and yellow wires, you will use Vehicle to Vehicle Tail Light Converter # 118158 which takes in those combined signals and separates them out onto individual wires at its output side. Your Brown running light wire will simple bypass the converter and go directly to the trailer connector. Rather than use adapters to connect the tow vehicle and trailer I suggest you wire in a matching...
    view full answer...
  • 2-wire to 3-wire Converter for Trailer Lights
    The Tow Ready Converter # 118158 will work well for your application. This converter needs to be installed downstream, so to speak, of your trailer connector. This converter box is not designed to be exposed to the elements, so you will want to mount it somewhere on the trailer where it is protected. You could also use a fuse box, like # PK52248, to protect the converter. If the ground wire from your trailer connector is already grounded to the trailer, the converter's ground wire can...
    view full answer...
  • Wiring Ground and Running Lights When Using Vehicle to Vehicle Tail Light Converter 118158
    When wiring in Tow Ready Vehicle to Vehicle Tail Light Converter # 118158 the tow vehicle's combined stop/turn signals and ground do connect at the input side. The ground connection will be split at the input side to also allow it to be run over to the output side as well. The running light wire on the tow vehicle (usually a brown wire) will also bypass the converter since it does not require any processing. The linked image illustrates.
    view full answer...
    Image 1 for
  • Getting UK Thule Bike Rack Lights with 13-Pin Connector to Work with a US 2014 Ram 1500
    As you probably know bike racks in the UK have to have lights on them. In the US they do not. So you could either not have lights or you would have to change either the connector on the bike rack or the one on your 2014 Ram 1500. I strongly advise changing the connector on the bike rack because it will be easier and less costly than changing the one on the truck and it will also keep your truck standard with the 4- and 7-Way connectors in case you need them for something else. You would...
    view full answer...
  • Can a Tail Light Converter be Used to Put a Third Brake Light on a Trailer
    Using a Tail Light Converter, like # 118158, will work to isolate the brake light signal for a third brake light on your trailer. What you would do is connect the green and the yellow wires on the input side of the converter in line with the appropriate wires leading to the left turn/brake and right turn/brake lights. The red wire exiting the converter would then be used to power your third brake light. The yellow and green wires on the output side of the converter would not be needed...
    view full answer...
  • Can I Add a Separate Turn Signal Light to My Trailer
    Yes it is possible to add a separate amber directional light to the trailer using part # 118158. Most trailers use a 2-wire system. One wire for the running lights on the trailer and the other wire is for the brake/turn signals. You can use the taillight converter to convert the 2-wire system to a 3-wire system by separating the wire for the brake/turn signals to add a seperate amber turn signal light. You want to splice the tail light circuits on the trailer with the green and yellow...
    view full answer...
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