Curt Upgraded Circuit Protected Powered Tail Light Converter - 4-Pole Flat Trailer Connector

Curt Upgraded Circuit Protected Powered Tail Light Converter - 4-Pole Flat Trailer Connector

Item # C56496

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Curt Wiring - C56496
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Product Images


  • Trailer Connectors
  • Vehicle End Connector
  • 4 Flat
  • Plug and Lead
  • Curt
  • 5 Feet Long
Lowest Prices for the best wiring from Curt. Curt Upgraded Circuit Protected Powered Tail Light Converter - 4-Pole Flat Trailer Connector part number C56496 can be ordered online at or call 800-298-8924 for expert service.

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  • Reviews (2)
  • Q & A (56)
  • Videos (1)
  • Photos
  • Why etrailer?

Curt Wiring - C56496


  • Adapts separate turn and stop lights (3-wire system) to a (2-wire system) on trailer
    • Requires a powered converter wiring kit (55151 - sold separately) to complete installation
  • Works with domestic and import vehicles
  • Virtually eliminates draw on vehicle tail light circuit
  • Potted enclosure resists water and vibration
  • Protects against overvolt, ESD, and short-circuits
  • No HD flasher required
  • Battery powered and circuit protected
  • Surface Mount Technology (SMT)
  • Does work with vehicles that have LED tail lights
    • Will work with trailers that have LED tail lights
  • Includes (4) Quick splices to aid in installation
    • Also includes 4-pole trailer connector cover


  • Pigtail length: 17" long
  • 4-Pole trailer connector length: 58" long from converter box
  • Amperage allowance:
    • 3.0 amps per turn/brake
    • 6.0 amps for taillight function

Warning: Overloading circuit can cause fires. Do not exceed product rating or tow vehicle's lamp load rating, whichever is lower. Read vehicle owner's manual and instruction sheet for additional information.

Surface Mount Technology (SMT) is a method for constructing electrical circuits where components are mounted onto the surface of printed circuit boards.

56496 Curt Circuit Protected Powered Converter w/ SMT

Replaces Curt 56146

C56496 Installation InstructionsInstallation Details C56496 Installation instructions

California residents: click here

Video of Curt Upgraded Circuit Protected Powered Tail Light Converter - 4-Pole Flat Trailer Connector

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Curt Wiring - Trailer Connectors - C56496 Review

Speaker 1: Today we're gonna take a look at the Curt Upgraded Circuit-Protected Powered Tail Light Converter, with the four-way flat trailer connector. Now, this will adapt separate turn and stop lights, which is a three-wire system that's on your vehicle, to a combined turn and stop signal, which is a two-wire system on your trailer. It does include this powered converter, this black box here. This is to ensure that your vehicle's wiring will match that of your trailer. It is a powered module, so it does connect directly to your battery to avoid overloading your vehicle's electrical system.Now, to install this, it does require a powered converter wiring kit, part number 55151. We do sell that separately on our website, and it is listed on this product page as a related product.

That is needed to complete your installation. This will work with domestic and import vehicles, virtually eliminates the draw on your vehicle tail light circuit. Does have a potted enclosure to resist water and vibration. And this will protect against over-voltage ESD, which is electrostatic discharge and short circuit. No heavy duty flasher is required, and again, the black wire connects to your vehicle battery so it is battery-powered and it is circuit-protected.

They do use SMT technology in this converter, which is surface mount technology. That's a method for constructing electrical circuits where the components are mounted onto the surface of printed circuit board, and it'll give you a consistent, reliable performance, and it'll help maximize your trailer light yield and intensity while producing minimal heat.Now, this kit will work with vehicles that have LED tail lights, and it will work with trailers that have LED tail lights. Includes everything here on the table. It also includes a nice set of detailed instructions on how to install everything, four quick splices to make your connections, piece of double-face tape; this converter box is pretty heavy, so you do want to attach it to the flat surface so it doesn't move around. They do include a couple cable ties to take up any slack in wiring, and they even include a grounding screw.

The white wire with the eyelet on it needs to be grounded, so they do give you a grounding screw that you can make your own ground.A few specs on this: The pigtail length on these is about 17 inches long. The four way that's connected here, the connector length on that is about 58 inches long from the converter box. Now the amperage allowance on this kit is 3 amps per turn and brake circuit, that's per circuit, or 6 amps for the tail light circuit. If you notice, it does have this integrated cover, so when you're not plugged into your trailer, you can put that cover on there to protect the terminals from any damage or from the elements.And basically, if you look at the top of the converter box, it'll tell you where all those wires go. Basically, the red wire will connect to your brake.

The white wire we mentioned is the ground. The yellow is the left turn. The green is the right turn. The black was the power wire that'll go to your vehicle's battery. And then the brown wire is for your tail light circuit.But that should do it for the review on the Curt Upgraded Circuit-Protected Powered Tail Light Converter with the four-way flat trailer connector.

Customer Reviews

Curt Upgraded Circuit Protected Powered Tail Light Converter - 4-Pole Flat Trailer Connector - C56496

Average Customer Rating:  5.0 out of 5 stars   (2 Customer Reviews)

- C56496

Wiring was properly installed and it works great! 636588

- C56496

Have purchased a number of hitches and wire harness for a number of different vehicles I have owned. All products were easy to install and worked perfectly . The instructions were clear and quality of their products is top notch. I have used their customer service to ensure I was ordering the right product for a older vehicle (75 Toyota Landcruiser) they were patient and ensured I got the right set . Their customer service is matched by their pricing and that would be hard to beat . Delivery (Canada) was exceptionally fast. Probably not my last order and I have recommended this company and their products to my friends. If your considering a purchase I don't think you will be disappointed and you will be saving lots of money doing it yourself. 680861


Ask the Experts about this Curt Wiring

Do you have a question about this Wiring?

  • Replacement Powered Converter for Curt Wiring Harness on 2015 Dodge Grand Caravan
  • I do have a solution for you, however the included powered taillight converter from the Curt T-Connector Vehicle Wiring Harness # C56150 is not currently available as a separate item. For a cost-effective way to replace this converter, I recommend going with the universal Curt Circuit Protected Powered Converter # C56496. You can simply cut the input wires on your existing harness and connect them to this new converter. I have attached a video demonstration on this product for you to...
    view full answer...

  • Trailer Wiring 4-Way Harness Recommendation for a 2005 Subaru Baja
  • For your 2005 Subaru Baja there is a trailer wiring option confirmed to fit, but not a T-connector type that would plug inline. Instead you would need to use the hardwire kit part # C56496 that is a universal fit kit that will work on your vehicle. This is the best priced option we carry as well.
    view full answer...

  • What is the Correct Trailer Wiring Harness for a 2012 Kia Sportage SX
  • For the 2012 Kia Sportage SX model, the correct trailer wiring harness is Upgraded Circuit Protected Tail Light w Converter Hardwire Kit, # 118526. Installation is not very difficult. The only real time consuming part is running the power wire to the battery. The power wire must be connected to the battery, no other power source has been tested and approved. I have included an FAQ that should help.
    view full answer...

  • Troubleshooting Trailer Wiring that the Turn Signals Activate with Blinkers
  • The issue you are experiencing is due to the fact that your trailer has separate trailer wiring circuits, meaning the turn signals and the brake lights are on separate bulbs and the trailer wiring harness # C56496 you installed is designed to operate combined trailer taillights, meaning the turn signals and brake lights are on the same bulb. What you are going to need to do is install the taillight signal converter part # 118158 on the wiring of your trailer. Once installed the red wire...
    view full answer...

  • Testing Trailer Wiring Converter Box to Determine if it is Damaged
  • If the trailer wiring was working properly why do you need to run that additional wire to the converter? It sounds like that is the problem. Only one source for the right turn and stop light circuit is needed. What you will want to do is test the wires going into the box of the converter box for voltage with a circuit tester like the # 3808 to see if there is voltage going into the box when the taillight functions of your vehicle are applied, and then test the output side of the box...
    view full answer...

  • How to Wire up a 5th Wheel Trailer so that a Utility Trailer Can be Towed Behind the Trailer
  • As long as your tow vehicle can handle the additional amperage draw of supporting the additional trailer lights of your second trailer you can certainly add a 4-way to the back ofyour 2003 Forest River 5th Wheel Trailer. You would want to use a Draw Tite Wiring Harness part # 18252 to tap into the wiring harness of your 5th wheel trailer. You will want to wire by function from the fifth wheel trailer using the included circuit tester from the # 18252 and then use the included quick-splice...
    view full answer...

  • How to Charge A Slide-In Camper Battery with The Vehicle Battery
  • What you will need is a thick gauge wire, an isolation solenoid like part # TR118665 and a set of quick disconnects like part # DL24086. You will run the wire from the output post of your Dodge Dakota alternator to the positive side of the battery in your camper using the isolation solenoid to prevent the battery from charging unless your truck is on and the quick disconnects for when you remove the camper shell from your truck and need an easy way to connect and disconnect the wiring.
    view full answer...

  • Is There a Wiring Harness That Will Work With My 2014 Nissan Murano CrossCabriolet?
  • You are correct, the Curt Hitch # 13577 is a fit for your 2014 Nissan Murano CrossCabriolet and the installation is relatively simple. And, we do have a wiring harness that will work for your vehicle, but it will have to be hard-wired. Don't let that scare you, we have detailed instructions and a video of the installation on a Nissan. A popular wiring kit for the CrossCabriolet is Curt # C56496. I would also recommend purchasing Dielectric Grease, # 11755, for the electrical connectors...
    view full answer...

  • Trailer Wiring Recommendation for a 2012 Toyota Prius V
  • I spoke with my contact at Curt and she informed me that for your 2012 Toyota Prius II you will need a Curt Custom Fit Vehicle Wiring # C56496. This is a hard wire install that requires that you test the wires of your tail light circuits that you have found. Check out the installation instructions and install video I attached for you. The Curt Harness # C56147 that you referenced is only for the older model Prii before 2012.
    view full answer...

  • Trailer Wiring Harness Recommendation for a 2014 BMW X1
  • We have two curt wiring harness part numbers that have 56146 in them. Part number # C56496 and part # 56146KIT that also includes the wiring and fuse holder for routing the power wire of the kit up to the vehicle battery. Both of these converters have the SMT (surface mount technology) circuit board that makes them very reliable as opposed to the older style of circuit board that other harnesses may have. Since your 2014 BMW X1 requires the wire get run all the way up to the battery...
    view full answer...

  • 2016 Honda Civic Trailer Wiring Recommendation
  • The Curt wiring harness part # C56496 is a universal, hardwire trailer wiring kit that will fit your 2016 Honda Civic EX-T. I have a better solution for you though. If you don't like the idea of splicing into your brand new vehicle's trailer wiring we offer the ZCI wiring harness part # 119250KIT that will simply clamp around the wires and can sense when there is power on them through wire insulation without having to penetrate it in any way. You will also need the power wire part...
    view full answer...

  • How to Replace Just the Converter Box of a Curt Trailer Wiring Harness
  • You could cut the old converter box out of your # C56164 and then install the converter box of part # C56496 in it's place. Normally we recommend to check the trailer wiring for any shorts and fix as necessary before connecting new trailer wiring so that the new box doesn't short as well. But since your trailer is brand new and works with your other vehicle you would most likely be fine.
    view full answer...

  • Will Curt Trailer Wiring for a 2015 Acura TLX Short Out
  • The only people that have problems with the Curt trailer wiring part # C56496 burning out are the ones who do not properly secure the converter box. If the box comes loose and starts banging around it will eventually burn out. Aside from that it is an excellent option that has been confirmed as a fit for your vehicle. We don't have any confirmed fit T-connector style harnesses for your vehicle so I am not sure if they have your vehicle confused with a different one like a regular TL.
    view full answer...

  • Trailer Hitch and Wiring Confirmed as a Fit for a 2016 Chevy Cruze
  • Yes, for trailer wiring the Curt harness part # C56496 is confirmed as a fit. This would work well with the Curt hitch part # C11439 which is also a fit for your vehicle. For a ball mount you would want the part # C45521 and then for a hitch ball you would want part # A-82 for a 2 inch ball or part # A-80 for a 1-7/8 inch ball.
    view full answer...

  • 2015 Jeep Grand Cherokee Trailer Wiring Troubleshooting, 7-Way Not Active
  • Your 2015 Jeep Grand Cherokee may have the connector needed but it's not active. First, I would use a circuit tester such as # PTW2993 to test the 7-way connector to see if it's active. You may need to contact a Jeep dealer to have them activate the trailer wiring as it sounds like yours isn't. This is a fairly common issue that we have seen.
    view full answer...

  • Troubleshooting a Curt 4-Way Harness with No Output Voltage
  • What you will want to do is test the wires going into the box of the Curt Wiring Harness part # C56496 for voltage with a circuit tester like the # PTW2993 to see if there is voltage going into the box when the taillight functions of your vehicle are applied, and then test the output side of the box to see if the current is making it through the converter. If not then the problem is that the converter box has shorted itself out and would need to be replaced. Before you replace it you...
    view full answer...

  • Trailer Hitch and Wiring Recommendation for a 2015 Kia Sorento 4 Cylinder
  • The trailer wiring kit part # C56496 is the correct wiring kit for your 2015 Kia Sorento with a 4 cylinder engine. The 6 cylinder engine models with the tow package can use the custom fit kit part # 118269 instead. The correct hitch would be the Curt Hitch part # C13152. I attached an install video for you to check out as well. If you plan on doing some towing you might be interested in etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch...
    view full answer...

  • Can the Curt Converter # C56496 be Installed on a 2009 Ford Escape
  • The Curt Upgraded Circuit Protected Powered Tail Light Converter # C56496 that you referenced is a universal fit and can be used on just about any vehicle. If you check out the attached installation instructions you can see the different wiring configurations for when you are installing this on a vehicle. Instead of trying to hardwire in a wiring harness to your 2009 Ford Escape I actually have an easier solution for you. The T-One Vehicle Wiring Harness with 4 Pole Trailer Connector...
    view full answer...

  • How to Install the Curt Wiring Harness part # 56146KIT in a 2010 Town and Country
  • To install the Curt Wiring Harness part # C56496 in your 2010 Chrysler Town and Country you will need to wire the harness by function and not wire color. The reason for this is what you already found out, the colors vary and all that really matters is the function. You will need to use the included circuit tester to test the different wires to determine their function and then wire them accordingly to the # C56496. I attached an install video for you to check out, but like I said you...
    view full answer...

  • Trailer Wiring Recommendation for a 2010 Range Rover HSE
  • Yes, we carry trailer wiring confirmed to fit the 2010 Land Rover Range Rover Sport HSE. The Curt wiring harness part # C56496 has been confirmed to fit your vehicle.
    view full answer...

  • Where are the Towing Light Fuses on a 2015 Jeep Grand Cherokee
  • I checked the owner's manual for your 2015 Jeep Grand Cherokee and found all of the locations you need to check that relate to the trailer lights. There are several so it is certainly possible that you missed a few but I don't see any relays. These fuses are all located in the power distribution center (PDC) or aka fuse block under the bonnet next to the engine. There may also be fuses in the interior fuse panel but I was not able to look the locations up for you. F29 20 Amp Blue –...
    view full answer...

  • Replacement Trailer Wiring Converter Recommendation to Replace Shorted One
  • To replace the bad converter box you could use the # C56496. This will allow you to wire the converter to existing wiring of your vehicle and will come with a new 4-way connector. You will want to check the wiring of your trailer to find what shorted out your current converter before you replace it so that you don't short out the new one as well.
    view full answer...

  • Why Is Trailer Wiring Converter Harness Needed for 2007 Cadillac SRX
  • In a lot of vehicle the turn signals are separate from the stop lights which is different from how trailer lighting works. That's why a converter is needed to match the circuit styles. Also a lot of vehicle't taillights can't handle the amperage draw of the trailer taillights so the power has to come from the battery which is what the # C56496 also allows.
    view full answer...

  • Converter for Separate Lights on Tow Vehicle and Combined Lights on Trailer
  • If your BMW motorcycle has separate turn and brake signals you would only need to install Wiring Converter # RM-732 to combine the separate turn signals and brake lights. I've added a link to a video review of this converter for you to take a look at. There is also the option of using the Upgraded Circuit Protected Powered Tail Light Converter # C56496 for vehicles and trailers with LED tail lights.
    view full answer...

  • Trailer Wiring Harness Recommendation for a 2014 Jeep Grand Cherokee without Tow Package
  • I did some checking and it looks like the correct wiring harness to give you a 4-way at the back of your 2014 Jeep Grand Cherokee would be the Curt Wiring Harness part # C56496. I attached installation instructions and an install video for you to check out.
    view full answer...

  • Convert a 4-way to a 7-way on a 2006 Lexus RX400 H
  • If the trailer doesn't have brakes all you would need is the 4 to 7-way adapter part # 37185. The 4-way of your 2006 Lexus RX 400h will plug into it and you would be ready to go. If your trailer has brakes you would instead need the part # ETBC7 and a brake controller. For a brake controller I would recommend the Prodigy P2 Brake Controller part # 90885. This is our best selling brake controller because of how well it works and how easy it is to setup. I attached installation instructions...
    view full answer...

  • Troubleshooting Curt Trailer Wiring Harness Install on a 2000 Nissan Xterra
  • The red wire of the Wiring Harness part # C56496 that you referenced should be run to the brake light circuit of your 2000 Nissan Xterra. If you are missing that connection I would recommend you verify that the other wires are securely connected to the correct circuits. Especially the black wire that needs to run to the positive terminal of your vehicle battery. If this connection isn't made, or the fuse isn't installed in the fuse holder the converter will not work. I attached an install...
    view full answer...

  • Trailer Wiring Recommendation for a 2016 Kia Sorento
  • For trailer wiring for a 2016 Kia Sorento without a tow package you would want the trailer wiring harness part # 56146KIT. This is universal wiring kit that will work great for you. I attached an install video for you to check out as well.
    view full answer...

  • How to Find the Reverse Light Circuit on a Vehicle
  • That information I do not have, but I can help you determine which wire it is. You will need to use a circuit tester like our part # PTW2993 to test all of the wires going to the reverse lights. Which ever one has voltage only when the reverse lights are on is the one you are looking for.
    view full answer...

  • 2016 Prius Touring Four Trailer Wiring and Hitch Fit Recommendation
  • We spoke with our contacts at Curt and we can confirm the fit of the Curt harness part # C56496 for the 2016 Toyota Prius Touring 4 hatchback. For a ball mount you would want the part # C45572 for a 2 inch ball or part # C45571 for a 1-7/8 inch ball.
    view full answer...

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Info for this part was:

Edited by:
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Expert Research:
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Updated by:
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Updated by:
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