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

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

Part Number: C56285
In Stock
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$52.94
Retail:$77.95
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Custom Fit Vehicle Wiring

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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. Powered converter reduces strain on wiring system and is made using SMT to ensure superior performance. 1-800-940-8924 to order CURT custom fit vehicle wiring part number C56285 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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  • Reviews (34)
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CURT Custom Fit Vehicle Wiring - C56285

  • 4 Flat
  • Custom Fit
  • Trailer Hitch Wiring
  • Powered Converter
  • CURT

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring. Powered converter reduces strain on wiring system and is made using SMT to ensure superior performance.


Features:

  • Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights
    • Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
  • Connects quickly and easily
    • Locate connection points in rear cargo area
    • Plug in T-connector
    • Run hot lead to car battery
  • Includes a tail light converter to ensure that your vehicle's wiring matches that of your trailer
    • Powered module connects directly to battery to avoid overloading vehicle's electrical system
  • Constructed using surface-mount technology (SMT) for consistent, reliable performance
    • Maximizes trailer light yield and intensity while producing minimal heat
    • Ensures superior operation in rough road conditions
  • Comes with dust cap for 4-way flat connector


Specs:

  • Maximum amperage:
    • Stop/turn lights: 3 amps per circuit
    • Tail lights: 6 amps per circuit
  • Limited 1-year warranty


Installation

This custom-fit T-connector plugs into your vehicle's wiring harness, which is located in your cargo area. You will have to remove all trunk floor coverings, storage trays, and the scuff panel to access these connection points. Once you've plugged in the T-connector, run the hot lead to your car battery. Connect the lead to the included fuse holder, and then connect the fuse holder to the positive terminal on your battery.


Once installation is complete, the 4-way connector will be stowed in an out-of-the-way location within your trunk.


It is recommended that you use a small amount of grease on all electrical connections - the plugs on your automobile and the 4-pole connector itself - to help prevent corrosion.


Powered Tail Light Converter with Surface-Mount Technology

A tail light converter is built into this T-connector. This converter is a circuit-protected, battery-powered unit that bypasses the electrical routes that are used by a basic wiring harness. As a result, there is virtually no draw on your tail light circuits.


Because most trailers run on a two-wire system - wherein the brake and turn signals are carried on one wire - the separate brake and turn signals from your vehicle's three-wire system need to be combined so they are compatible with the wiring system of the trailer. This converter combines the brake and turn signal functions of your automobile so that they run on one wire to properly activate your trailer's tail lights. Note: This will not affect how the tail lights on your vehicle operate.


Curt builds each tail light converter using surface-mount technology (SMT). This method of construction involves soldering electronic components directly to the surface of a printed circuit board. SMT eliminates the need for leads, which are used in older through-hole technology. The result is a circuit board that is smaller yet provides more routing area and that offers superior performance, reliability and durability.


Curt SMT Circuit Boards

Circuit boards constructed using SMT have been shown to perform better under rough conditions with excessive vibration than those made using the through-hole method. And where would vibration be more likely to occur than in towing applications? Curt converters also produce less heat, leading to increased durability and longer life. In addition, lower levels of resistance ensure better performance, especially for parts that operate at higher frequencies.


Each Curt circuit board is made using high-quality components that are pieced together in the most technologically savvy fashion, leading to greater predictability and reliability in functioning.



56285 CURT T-Connector Vehicle Wiring Harness with 4 Pole Trailer Connector

Installation Details C56285 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:


Customer Reviews

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - C56285

Average Customer Rating:  4.6 out of 5 stars   (34 Customer Reviews)

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring. Powered converter reduces strain on wiring system and is made using SMT to ensure superior performance.

by:
2017 Volvo XC90

Hello. Thanks for the prompt delivery. I thought I had ordered a wiring harness for a 2017 XC 70 but instead received Curt custom wiring harness model 56285 for an XC90. I'd like to return this product and exchange it for the appropriate model of a 2017 XC60. Thank you.

Jenny N. profile picture
Etrailer Expert

Jenny N.

7/18/2024

Luis, the harness that you need will be part # C59236 for your 2017 Volvo XC60. I will have return instructions sent out to you via email.



by:
2020 Volvo XC90

Delivery was prompt and followed up by CS. I used the excellent video and had it installed solo in 1.5 hours (without wirimg harness). I only had to bend the heat shield up in the middle like he said in the video, no cutting except the center of the underside of the fascia. I'll write another after I do the wiring harness.
This is my second hitch set up from etrailer and I'm very pleased with both purchases.



by:

It's an easy plug and play wiring harness although I have no tested it yet with my trailer. The video from etrailer showed the self tapping screw being put on next to a small bolt for the ground wire ,I was not comfortable drilling the screw into the body of the car. I found a large bolt down the floor next to the battery and used it for the ground. The passenger side was a bit hard to open or loosen to grab the plug wiring harness and connect the etrailer plug. Overall ,both the trailer hitch and wiring harness are DIY project for your car as it was designed for easy installation.



by:

It is always a good experience dealing with etrailer.com. Very helpful folks, especially George J. I highly recommend this company!



by:

Easy to install. Watched a youtube video and had no issues. Great customer service and quality part.



by:
Volvo XC90

Pretty straightforward on installation after watching the video etrailer posted on the Volvo XC90.



by:

Item was clearly repackaged. Never the less I had to use it and it seems to work fine. Install was easy with the assistance of a very helpful video.



by:

Works great. Easy to install and tuck everything away when not using to keep from weather. No problems with trailer lighting from either occasional [moving] trailers or personal trailer.



by:
Volvo XC90

I really like the way the stealth hitch is hidden when not in use on my Volvo XC90.



by:

As advertised,this harness is a snap to install.
I did also added a”P”clamp to the harnesses at the light assemblies to tuck everything in tight.

Works great!!



by:
2018 Volvo XC90

Easy to install and use. Excellent installation instruction video



by:
2016 Volvo XC90

Unable to finish the battery hook up to the wiring. I have "T8" Xc90, Hybird, battery connections are not the same as any information available, unsure at the moment how to proceed, do not want to loose any settings if I take off connections.



by:
2022 Volvo XC90

Easy to install following the installation video



by:

Easy to install



by:
2018 Volvo XC90

Gene R. profile picture

Gene R.

6/17/2024

Great!! Easy to use, no fraying when rear door closed. When not in use we tuck in under the back floor access. Not a problem with it.



by:

Works great,easy install.



by:
2017 Volvo XC90

This installed easily and works good.



by:
2017 Volvo XC90



by: 06/07/2024



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2016 Volvo XC90



by:
2019 Volvo XC90


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Show More Reviews

See what our Experts say about this CURT Custom Fit Vehicle Wiring

  • What Part Do I Need to Trim to Install the Hidden Hitch item # DT82GR on a 2019 Volvo XC90?
    The only part that will need to be trimmed or cut to install the Hidden Hitch item # DT82GR is the bottom of the fascia. I have attached a picture below that will show you this step. The Hidden Hitch item # DT82GR is confirmed to fit the 2019 Volvo XC90. If you are planning on towing you will also need a wiring harness item # C56285 and a ball mount kit item # C45534.
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  • Which is The Best Receiver and Which is The Easiest To Install On a 2017 Volvo XC90?
    The Stealth Hitches Hidden Trailer Hitch Receiver w/ Towing Kit # SH27FRT is going to be the best receiver for your 2017 Volvo XC90. This allows you to remove the receiver tube or ball mount when not needed providing you a clean factory appearance. It also includes the trailer wiring needed for adding a 7-way trailer connector which will integrate into the factory wiring. This is a more difficult install than one like our etrailer Receiver # e53KR as it will involve removing the rear bumper...
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  • What is the Best HItch for a 2019 Volvo XC90?
    Yes, we do! The best one is going to be the Curt Hitch item # C53HR. This hitch is custom fit for your 2019 Volvo XC90 and bolts to it with included hardware. This is a class III hitch with a 2" receiver which means it will be compatible with most bike racks on the market. The reason the Curt item # C53HR is the best hitch for your Volvo is because the crosstube mounts behind your rear bumper leaving only the 2" receiver exposed. This not only looks better but helps with ground clearance...
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  • Help With Installing The Curt T-Connector 4-Way Wiring # C56285 On 2022 Volvo XC90
    For the Curt T-Connector Vehicle Wiring Harness # C56285 I have linked an installation video for a 2021 Volvo XC90 below. This is currently the newest model XC90 we have been able to install any of the wiring harnesses we carry. If your XC90 is different you will want to consult a service manual for your specific model year which will help you to access the necessary wiring and a suitable grounding point. You may be able to find a pdf version for the service manual on a Volvo forum.
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  • Trailer Hitch and Wiring Recommendation for 2018 Volvo XC90
    For your 2018 Volvo XC90 the Curt hitch part # C53HR is the correct fit and the one you'd want. The other two part numbers you mentioned are not active, so they are no longer available. For trailer wiring you'd then want the Curt # C56285 which is a confirmed custom fit that will install easily. If you wanted to do 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 drop and one with a 2-3/4 inch rise...
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  • Where Does The Trailer Wire Harness Connector Sit After Installation On A 2021 Volvo XC90
    Hi Ryan, The Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C56285 is designed to stay in the trunk of your XC90 when not in use. When in use you'll just pull it out and close the rear hatch. There's a gasket that lines the rear hatch that will flex to allow for the wiring to pass through and not get smashed when you close the hatch. If you want to run it down to the hitch instead then you'll likely need to run the connector to a tail light corner and then...
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  • Trailer Wiring Harness Fit for 2017 Volvo V90cc
    Although it's conceivable that the Curt # C56285 could fit the 2017 Volvo V90, they haven't tested the fit so they cannot confirm if it'll work for you. I'd recommend going with a universal fit harness like the # C59496 which will without a doubt work for you. The install will require some splicing, but the installation isn't too difficult. I'll link to a video with more details.
    view full answer...
  • Recommended Trailer Hitch for 2017 Volvo S-90 T6
    For your 2017 Volvo S-90 sedan with T6 trim (whether the T6 Momentum or the T6 Inscription), the Curt Trailer Hitch Receiver # C13305 is a confirmed fit. It is a bolt on installation with no drilling required but there is some rear fascia trimming required. I've attached the installation details to assist. If you are interested in wiring for towing or accessories, I recommend the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C56285 which is also a confirmed fit.
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    Image 1 for
  • Trailer Hitch and Wiring for a 2018 Volvo XC90 T8
    The available trailer hitches for your 2018 Volvo XC90 will require varying degrees of vehicle modification for installation. The Curt hitch # C53HR does not require any drilling but does require some fascia trimming and heat shield modification. I have linked the instructions for installation for you. This hitch is listed as a fit for all styles of the 2018 XC90 including the T8. Curt hitch # C13233 does require drilling but does not require trimming the fascia. It does require modifying...
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  • Is Bumper or Fascia Trimming Required to Install Curt Trailer Hitch on a 2016 Volvo XC90
    To install Curt trailer hitch # C13233 on your 2016 Volvo XC90 there is an underbody heat shield that will need to be trimmed, see the linked instructions, but the fascia/bumper does not have to be trimmed. I have included a picture of what the hitch looks like once installed. You can see that the bumper and other pieces remain intact. If you plan on doing some towing I recommend etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch drop and...
    view full answer...
    Image 1 for
  • Class III Trailer Hitch Availability for 2016 Volvo XC90
    The 2016 Volvo XC90 is part of the car's second generation, along with the 2014 and 2015 model years. For this vehicle we offer Curt Class III hitch # C13233. If used for non-trailer loads like a bike rack the hitch must be supported with a strap # 18050 per Curt warranty requirements. For a ball mount you can use # C45030 and either 2-inch hitch ball # 63845 or 2-5/16-inch ball # 63847. For a hitch lock use part # e98880. For a wiring harness you can use # C56285 from Curt. This wiring...
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  • Trailer Hitch and Wiring for a 2016 Volvo XC90
    For your 2016 Volvo XC90 you can use Curt trailer hitch # C13233. This is a Class III trailer hitch with a 2 inch receiver. It is rated for 900 pounds tongue weight and 6,000 pounds gross trailer weight. Be sure to check the vehicle owner's manual for the XC90 capacity and go by the lowest rating. If you plan on doing some towing I recommend etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch drop and one with a 2-3/4 inch rise or 4 inch drop....
    view full answer...
  • Parts Needed To Pull Utility Trailer Behind a 2016 Volvo XC90 Using a Hidden Hitch Trailer Hitch
    Yes, you are able to tow a 6x12 utility trailer with the Hidden Hitch by Draw-Tite Trailer Hitch Receiver # DT82GR on your 2016 Volvo XC90. It is recommend to use the Quick Links # RM-910022 for attaching the trailers safety chains and you will need a Ball Mount # 3371803307. Your trailer likely has a 4-way flat and will need the Curt T-Connector Vehicle Wiring Harness # C56285 installed on your XC90 to connect to.
    view full answer...
  • Recommended Wiring Harness for a 2020 Volvo XC90
    Yes, the instructions for the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C56285 are the same for both the hybrid and gas models.
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  • Troubleshooting Curt Trailer Wiring Harness # C56285 that Turn Signals Don't Work
    Typically with T-one style trailer wiring harness like the part # C56285 with issues like this fix is to just disconnect and reconnect the connectors which ensures the pins end up fully seated. Otherwise you'll need to use a circuit tester like part # PTW2993 to test for voltage on input side of box and output. If input is there but nothing on output the issue is the converter box is shorted out.
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  • 2017 Volvo XC90 Trailer Hitch and Brake Controller Recommendation
    First let's start with a hitch for your 2017 Volvo XC90. The Curt hitch part # C53HR that you referenced is the way to go as it doesn't have a visible crosstube. Now for a brake controller there's no reason you couldn't install an aftermarket one from us and not worry about it affecting any safety programs on your vehicle. I am not sure what the guy at the dealer was thinking but our controllers install totally outside of the computer of the vehicle so there would be no interference. That...
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Do you have a question about this Custom Fit Vehicle Wiring?


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Joshua S
Video by:
Joshua S
Employee Dustin K
Video by:
Dustin K
Employee Jonathan Y
Video by:
Jonathan Y
Employee Thomas T
Video by:
Thomas T
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Cole B
Installed by:
Cole B
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Isabelle B
Updated by:
Isabelle B
Employee Kristen H
Written by:
Kristen H
Employee Shane H
Test Fit:
Shane H
Employee Jacob H
Test Fit:
Jacob H
Employee Ryan G
Test Fit:
Ryan G
Employee Bradley B
Test Fit:
Bradley B

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