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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 Trailer Connectors - C56496
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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 etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (9)
  • Q & A (67)
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Curt Wiring - C56496

  • Trailer Connectors
  • Vehicle End Connector
  • 4 Flat
  • Plug and Lead
  • 0 - 5 Feet Long
  • Curt


  • 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

Installation Details C56496 Installation instructions

California residents: click here

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   (9 Customer Reviews)

- C56496

I put it in today and it works great! Great service at etrailer.

- C56496

Contained everything pictured and worked well for running power to the powered tail light converter

- C56496

Its good product..fit perfectly for my metris 2016

- C56496


- 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.

- C56496

No muss or fuss, this just works.

- C56496

Wiring was properly installed and it works great!

- C56496

- C56496


Ask the Experts about this Curt Wiring

  • Does 2003 Mercedes ML320 Need Brake Controller to Activate Trailer Brakes
    Sounds like the brake lights circuit of your trailer wiring was either accidentally or intentionally ran to the brake output circuit of your trailer wiring which is why your brakes lock up when the brakes are touched. You do need a brake controller to take care of applying the brakes as full 12 volts from a light circuit will always lock them up. A brake controller will vary the voltage of the circuit to give the brakes the correct amount of pressure. The easiest solution is the Curt...
    view full answer...
  • Trailer Wiring Harness Recommendation for a 2002 Mercedes Benz M-Class
    The Curt Wiring Harness part # C56496 that you referenced is a universal fit wiring kit designed to fit your 2002 Mercedes M-Class as well as the VW in the product picture. I attached an install video that shows this wiring kit being installed on a very similar M-Class as yours for you to check out as well.
    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...
  • 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...
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  • 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...
  • 4-Way Trailer Wiring Harness Recommendation for a 2014 Ford C-Max
    The recommended trailer wiring harness for your 2014 Ford C-Max is the Curt Harness part # C56496. The local trailer rental place would have no problem at all installing this kit as I am sure they install similar harnesses on vehicles on a regular basis. There are instructions included with this kit that I attached to the right in a link as well as an install video. For ball mounts I recommend the etrailer Ball Mount Kit # 989900. It comes with 2 ball mounts, 2 balls, a hitch pin with...
    view full answer...
  • Tips for Finding Taillight Wiring on Hatchback Vehicle
    What you will need to do is find the rubber conduit that carries the wiring from the hatch lights to the door frame of the vehicle. Typically this is at the top of the door. If you look for a black rubber hose that runs from the hatch to the door frame that's what you need. Inside this will be the wiring for the taillights. You will need to use a circuit tester like what comes with the # C56496 to test the wires to find the correct circuits.
    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...
  • 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...
  • 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...
  • 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...
  • 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...
  • 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...
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  • 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...
  • 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...
  • 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...
  • 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...
  • Trailer Wiring Harness Recommendation for a 1994 Jeep Grand Cherokee
    It sounds like the converter box of the # C56496 has shorted out. If it's putting 12 volts on all three taillight circuits just because the battery wire is hooked up it has shorted out. For a replacement harness I would go with the part # C55349 as it will install inline with your taillights for an easier install.
    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...
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  • What Does the 12 Volt Power Wire Do on the 2012 Honda CRV Wiring Kit by Curt
    The purpose of the 12 volt power cable that gets run to the battery of your 2012 Honda CR-V is to protect the delicate tail light wiring circuit. It does this by only using your tail light circuits as signal wires and using the power it gets from the battery to power the tail lights. This prevents the tail light circuit from being overdrawn. You will need to run this wire or the Curt Wiring Harness # C56496 will not function. I attached an FAQ on running this wire for you to check out. I...
    view full answer...
  • Hitch and Wiring Recommendation for a 2012 Chevy Volt
    Since the 2012 Chevy Volt is not typically used as a tow vehicle there hasn't been much of a demand for a t-connector style trailer wiring harness. As of right now, and for the foreseeable future, the only wiring option you have would be a universal install harness like the part # C56496. For a hitch you would want part # C11221. Ball Mount part # C45521, 1-7/8 inch ball # A-80. Lastly, check your owners manual to see if there are any restrictions on towing with your vehicle.
    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...
  • 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 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...
  • 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 Trailer Wiring that Stops Working when Vehicle Headlights are On
    What you described is a classic ground issue. The problem is that the added amperage draw of the head/running lights being on for your vehicle makes the trailer taillights a bit weaker. What you would want to is run the grounds of the light assemblies of your trailer back to the main ground harness of your trailer. I can almost guarantee that will fix the problem. I attached a help article for you to check out as well that covers 4-way troubleshooting.
    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...
  • 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 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 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...

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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee Wilson B
Updated by:
Wilson B
Employee Hannah L
Updated by:
Hannah L
Employee Kristina F
Updated by:
Kristina F
Employee Isabelle B
Updated by:
Isabelle B
Employee Amanda M
Written by:
Amanda M

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