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  2. CURT
  3. 4 Flat
  4. No Tow Package
  5. Trailer Hitch Wiring
  6. Vehicle End Connector
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2019 Dodge Journey
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CURT

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

Part Number: C55585
94 Reviews | 14 Questions
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$68.73
Retail:$105.95
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 Custom Fit Vehicle Wiring
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2019 Dodge Journey

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curt custom fit vehicle wiring 4 flat plug-in c55585
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curt custom fit vehicle wiring trailer hitch plug-in t-connector harness with 4-pole flat connector

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Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring - no cutting, splicing or tapping required. Converter is made using SMT to ensure superior performance. 1-800-940-8924 to order CURT custom fit vehicle wiring part number C55585 or order online at etrailer.com. Free expert support on all CURT products. Great prices and Fastest Shipping for Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
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CURT Custom Fit Vehicle Wiring - C55585

Highlights

  • Custom Fit for Your Vehicle: Works with your vehicle's wiring
  • Tow Without Factory Prep: 4-way connector powers trailer lights for safe towing.
  • Plug-and-Play Install: T-connector plugs inline with tail light harness, no splicing needed.
  • Ready for Upgrades: Works as base for adding 7-way and brake controller setups.
  • Clean, Secure Fit: Uses existing tail light plugs for a factory-style connection.
  • Simple Adapter Use: 4-way easily converts to 5-, 6-, or 7-way with optional adapters.

Features to know about

Installs Without Cutting or Splicing: Plug-In 4-Flat Harness

Wiring a trailer doesn’t have to mean cutting into factory wires. The Curt T-Connector plugs directly into the tail light connectors, giving you a clean 4-flat trailer plug for running, turn, and brake lights. It’s a straightforward setup that keeps your factory wiring intact and ready to tow.

Saves Time with Simple Behind-the-Light Connection

The harness connects inline with the tail light wiring on each side of the vehicle. You don’t have to run new wires front to back or trace circuits under panels. Just unplug the tail lights, insert the T-connectors, and you’re done. It’s about as easy as trailer wiring gets.

Comparison image of Curt T-Connector vehicle wiring harness models showing 4-pole flat trailer connectors and plug-in ends for different vehicles, used to illustrate wiring compatibility and connector design differences.

Ready for a 7-Way Upgrade When You Need It

If you decide later to tow with electric brakes or charge a trailer battery, this 4-flat is ready to pair with a universal 7-way install kit like the ETBC7. That setup adds circuits for brake control and auxiliary power without redoing your base wiring. It’s a solid foundation for expanding your towing setup.

Clean, Reliable Power for Your Trailer Lights

Once installed, the harness provides a dependable power path for your trailer’s lighting circuits. It’s designed to match factory specs so your turn signals, brake lights, and running lights work exactly when they should. The sealed connectors help keep moisture out for lasting performance tow after tow.

Specs

Electrical Specifications

  • Maximum amperage:
    • Stop/turn lights: 3 amps per circuit
    • Tail lights: 5 amps per circuit

Warranty

  • Limited 1-year warranty

Note

This will not affect how the tail lights on your vehicle operate.

55585 CURT T-Connector - Surface Mount Technology - 4 Wire

Similar to Tekonsha 118400 and Hopkins HM43125

Installation Details C55585 Installation instructions

This Product Fits The Following Vehicles






Customers Who Purchased This Custom Fit Vehicle Wiring Also Bought...



Customer Satisfaction Score:

Ratings & Reviews

4.8

94 reviews
5 Stars
(82)
4 Stars
(10)
3 Stars
(1)
2 Stars
(1)
1 Star
(0)
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by:
Curt products are well made. We only use their products. Their trailer hitches withstand the corrosive chemicals on New England roads. Stay away from "Hidden Hitch" products. They rust very quickly and you will always be wondering if your hitch is going to break, not a good thing because the safety chains are also attached to the hitch!
Chris C. profile picture

Chris C.

12/2/2025

Great! Still no rust after being exposed to New Englands harsh weather for a year. Curt products are the best

by:
honda Ridgeline
This just plugs into the lights and is easy to install. I was not happy with the “trailer lights don’t blink when brakes applied” and differing opinions on if that is as designed or a bad ground. I had a good ground. Ended up installing the OEM 7 pin kit with the relays and all that effort in the dashboard. Too late to return so put this unit back on the shelf and called it a training cost. Does not change my excellent opinion of Curt products. Gen 1 Ridgeline that I am lucky to have because new trucks are not affordable so happy to roll with it.
by:
2006 Honda Ridgeline
Well made. Can't wait to install it.
by:
Works fine. Had a bit of a problem routing the harness, but that's a Honda problem, not yours. Connectors are easy to fit & thus far problem free
Larry profile picture

Larry

6/24/2025

Works as expected fine easy to install.

by:
Super easy to connect. Just need a 10mm socket or Philips and possibly a flat head screwdriver to separate the current connectors. Then a drill for the ground wire screw. Feed the driver side up from the bottom and plug in, run the other wires across and up to connect. Secure the 4 way and converter box. Done.
by:
Easy to use just take out the brake lights plug it in make sure you got plenty of zip ties
by:
The reason this one is excellent is because I haven't installed it yet. I live in the rust belt and 2 of the exact same products failed due to exposure to the elements and salt/sand treated roads. The first one worked well for a couple of years but shorted out somehow and subsequently shut down my vehicle tail and brake lights in the middle of a snow storm while driving at night. When the first one failed the manufacturer replaced it free of charge but that one eventually gave in due to the elements also. When I called the manufacturer they reluctantly promised to send me another but didn't come through or tell me why. The reason I bought the 3rd unit is ease of installation which I haven't done yet but will the next time I do any trailering at night. It's the black converter box that shorts out.
by:
Honda Ridgeline
The wiring harness was easy to install on the Ridgeline. It took about 30 minutes most of which was removing and re-installing the tail light assemblies. The wiring runs were of good length to route them. The materials are of excellent quality. The instructions were simple to follow for the installation. Recommend this to any Ridgeline owner lookin for a quick wiring kit for your truck.
by:
2006 Honda Ridgeline
Excellent instructions and wiring harness fit perfectly with no problems whatsoever. Took about 45 minutes to install completely.
Jim A. profile picture

Jim A.

11/1/2017

I dont use the hitch all that much but it works fine.

by:
Ford Flex
It was just what I was hoping for. Instructions were helpful, easy to install. The connector on the right side had me stumped for a bit, the wiring connector would not plug into the trucks connector. I realized the wiring connector had a stiff white plastic spacer that was not needed for my application. I pulled it out and the connectors snapped right together. I put the wiring in a plastic flex type hose and zipped tied to the body above the hitch.
by:
2008 Honda Ridgeline
This wiring kit was a breeze to install. Just remove the taillights hook up the new connectors and run the wires. I tested it and it works great. Over the years I have ordered several items from etrailer.com and I have always had fast services and quality products. The reviews and videos are very helpful.

Chris
by:
2013 Honda Ridgeline
Super easy installation with the video and it works as advertised. Saved me a lot of money vs. having UHaul or Pep Boys install a wiring harness. The only negative, the adhesive pad did not hold for long, ended up zip-tying the module to the undercarriage.
by:
2008 Honda Ridgeline
Great products! Will definitely buy from again and refer others.
by:
Thanks to Gwendolyn Y for helping me out on my return.
I hope this harness works for longer than 6 months.
Steve profile picture

Steve

9/19/2024

So far so good, no issues. I did make an extra effort to mount the box securely, the provided mounting adhesive could be more robust.

by:
Some of the wiring could be longer, others shorter. Would be better if the transfer box had a solid mounting point vs 2-sided foam tape. Also had to remove the white plastic inner spacer for the connector on the passenger side plug that goes into the tail light (easy to do with a pair of needle nose pliers).

Overall very easy to install and built decently.
by:
Honda Ridgeline
While I haven't installed this harness on my Ridgeline yet I fore see no problems thanks to the video on e-trailer site. What impressed me the most was order placed 10:00am cdt on a Saturday and delivery on Mon. by 2:00 pm....unheard of speed!!!! You can be certain etrailer will be the first place I look for accessories for my truck.
by:
More precise directions would make installation a lot easier
William J. profile picture

William J.

10/8/2023

Very good. Easy to install

Mike L. profile picture
Etrailer Expert

Mike L.

10/25/2023

@WilliamJ Awesome, we're glad to hear that!
by:
Installation was pretty easy, only downfall was the adhesive on the back of the converter isn't very sticky. I had to use other adhesive to make it stick under my truck.
by:
Honda Ridgeline
I received my wiring harness on time and the installation was easy. The T connections fit my Honda Ridgeline exactly and the install video was very helpful. I would recommend this site and I will use it again.
by:
2007 Honda Ridgeline
This wiring harness works great. I read where a faulty
wiring harness could be the cause of my Honda Ridgeline
blowing blinker fuses. I changed it and its working great.
I was concerned about the instillation but I watched a video
on it and it was quite simple.
by:
Have had it for about a year now. Wiring was super easy and instructions were easy to follow. It fit in nicely and now our popup has lights! yay for being legal! haha
by:
2008 Honda Ridgeline
Harness fit perfectly. Instructions were clear and concise. I will definitely purchase from etrailer in the future.
by:
Very easy install hardest part was disconnecting original taillight plugs !
by:
Honda Ridgeline
delivered by estimated date, very pleased, as soon as weather breaks from this snow will install on my Honda Ridgeline.
by:
2007 Honda Ridgeline
This fit perfectly.
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See what our Experts say about this CURT Custom Fit Vehicle Wiring

Do you have a question about this Custom Fit Vehicle Wiring?
  • Parts To Tow a Camper with Brakes with a 2012 Honda Ridgeline
    Hey Jay! I'm happy to help setup your Ridgeline and your popup camper and get you on the road! To start, if you don't already have a 4-flat wiring harness from the factory for your Ridgeline, the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C55585 is the perfect place start. This is a plug and play option for a quick and easy install using the factory plugs behind your taillights, so there's no splicing required on this step. This plug holds the power for...
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  • Trailer Wiring Harness Recommendation for a 2008 Honda Ridgeline
    Yes, the CURT T-Connector Vehicle Wiring Harness with 4 Pole Trailer Connector # C55585 is the correct wiring harness for your 2008 Honda Ridgeline. To install this kit you will basically just need to access the tail light harness on both sides of the rear of your vehicle and install the harness from the # C55585 inline with it. Check out the installation instructions I attached that detail this also. If you need a 4 to 7-way adapter for a trailer that does not have electric brakes you...
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  • Easiest Way to Install 6-Way Trailer Connector on 2011 Honda Ridgeline
    The easiest way to install 6-way wiring on your 2011 Honda Ridgeline will be to start with a 7-way that's custom fit for your vehicle like the Tekonsha part # 118253 and then use a 7-way to 6-way adapter # HM47570 to match the 6-way on your trailer.
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  • Adding 7-Way to 2008 Honda Ridgeline
    Hello Jay, Your 2008 Honda Ridgeline has different connections than the 2009, and the OEM has an odd added pinned connection so it's not compatible. Apart from that you may be able to find an OEM replacement connector, but otherwise the best I can offer to add a 7-way to your 2008 Honda Ridgeline you'll need the 4-Way Trailer Connector # C55585 and Universal Installation Kit for Trailer Brake Controller # ETBC7.
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  • Trailer Hitch for 2011 Honda Ridgeline LT
    Hi Anthony; the "not confirmed to fit" you're seeing means the # e54KR does not fit your 2011 Honda Ridgeline LT. This hitch is designed to fit the 2011 - 2015 Kia Sportage excluding SX models and 2010 - 2015 Hyundai Tucson. For a hitch that fits your 2011 Ridgeline you can use the Curt Trailer Hitch Receiver # 13385 instead. If you're planning on towing you will also need the Curt T-Connector Vehicle Wiring Harness # C55585. This will give you a 4-way to power your trailer's signal lights....
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  • Trailer Brake Controller installation in 2010 Honda Ridgeline Without Factory 7-Way
    Your 2010 Honda Ridgeline will have an under-dash connection port for a trailer brake controller like the Prodigy P3 # 90195 only if it came from the factory with the 7-way trailer connector. Adding this connector using kit # 118253 does not provide the brake controller port. This part is intended as a factory replacement but not a retro-fit. For any vehicle that does not have the factory-installed 7-way and the under-dash port a brake controller installation will be hardwired. This process...
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  • Parts Needed to Add 7-Way RV-Style Trailer Socket with 12V Power to 2014 Honda Ridgeline
    The 4-pole flat trailer wiring harness you referenced, part # 118400, does not fit your 2014 Ridgeline. It fits only earlier model years. And please note that this 4-pole wiring format carries only basic lighting signals - stop, turn and tail - but does not include a provision for 12V auxiliary power for maintaining the charge on a trailer-mounted battery, nor for any other functions. A similar 4-pole kit that does fit your 2014 Ridgeline (without the factory tow package) is part # C55585...
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  • Can Curt Wiring Harness Be Used on a 2012 Honda Ridgeline RT to Tow a Small Trailer
    As long as the small utility trailer you plan on towing is wired correctly and does not have any shorts on the tail light circuitry you would have no problem installing Curt Custom Fit Vehicle Wiring part # C55585 on your 2012 Honda Ridgeline RT. Check out the installation instructions I attached for this product also.
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  • Should You Use A Friction Style Sway Control System On A Lance 1575 Travel Trailer?
    Adding the Reese Pro Round Bar Weight Distribution w Sway Control # RE94FR is a great idea! With your trailer being pretty heavy compared to your vehicle, you are likely going to experience some sway while driving. This is why it'd be smart to invest in a sway control system, as this will provide a more enjoyable experience and this is what they're made to fight against. Additionally, if you do not already, you're going to need a trailer hitch # 13385, a ball mount # D320, and a 7-way...
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  • Trailer Wiring Recommendation for a 2008 Honda Ridgeline for a 4 and 7-way and Brake Controller
    Yes, you will need a couple different wiring kits, but there is a way for you get both a 4 and 7-way on your 2008 Honda Ridgeline and have them both be fully functional so that you can install a brake controller. First, you will need the Curt Wiring Harness part # C55585 that you referenced to install a 4-way on your vehicle. Once that is installed you will be ready to install the Brake Controller and 7-Way Installation Kit part # ETBC7 that will give you a fully functional 7-way to use...
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  • Wiring 2008 Honda Ridgeline to Power Reverse Lock-Out Solenoid on Hydraulic Trailer Coupler
    From your previous question, it looks like your trailer uses a 7-way connector, is that correct? If this is the case, you would begin by installing the # C55585 wiring harness you mentioned. You would then use a 4-pole to 7-way adapter, part # 37185. This adapter would simply plug into the 4-pole you installed, and will have 4 additional wires that might need to be connected according to your needs. The white wire with the ring terminal would need to be grounded to the trailer frame....
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  • Recommended 4-Way Wiring Harness for a 2017 Honda Ridgeline
    I have a solution for your but when I spoke to my contact at Curt and he informed me that the 2017 Honda Ridgeline is a completely redesigned model from the 2014 to the 2017 and the # C55585 will not work. While there currently is no custom wiring harness for the 2017 Honda Ridgeline, a great universal option, I recommend for you to install the ZCI wiring harness # 119250KIT. The ZCI harness will install a 4-way trailer connector on your vehicle without cutting or splicing into your wiring....
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  • Honda Ridgeline 2014 7-Way and Brake Controller Recommendation
    For your 2014 Honda Ridgeline the # C55585 is the correct 4-way for your vehicle. To convert the 4-way to a 7-way for just trailer lighting functions the # 30717 and the # 18138 would work well. If your trailer has brakes that need to be activated you would instead want the # ETBC7 for converting the 4-way since it will make it fully functional. For a brake controller I would recommend the Prodigy P2 Brake Controller part # 90885. This is our best selling brake controller because of how...
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  • Can a Brake Controller Install Port on a Honda Ridgeline be Used with ETBC7 Install Kit
    If you have the brake controller on your 2008 Honda Ridgeline but are using the hardwire kit # ETBC7 you could test the pins of the port on your vehicle to see if the 12 volt circuit is active with a circuit tester like part # PTW2993. If you find a pin with 12 volts all the time then you can use it for the black wire of the controller. Otherwise you will need to run the wire to the battery. For the red wire of the controller you can test other pins on the connector you found to see if...
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Info for this part was:

Employee Joe V
Test Fit:
Joe V
Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Andrew K
Video by:
Andrew K
Employee Lindsey S
Updated by:
Lindsey S
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Isabelle B
Updated by:
Isabelle B
Employee Dustin K
Video Edited:
Dustin K
Employee Cole B
Installed by:
Cole B

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