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Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 7-Way and 4-Pole Flat Connectors
CURT

Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 7-Way and 4-Pole Flat Connectors

Part Number: C55774
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$31.24
Retail:$52.80
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Custom Fit Vehicle Wiring

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Quickly and easily install a 7-way and a 4-way trailer connector on your vehicle with this custom harness. Connector plugs directly into OEM tow package wiring harness - no cutting, splicing or tapping required. 1-800-940-8924 to order CURT custom fit vehicle wiring part number C55774 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 for Factory Tow Package - 7-Way and 4-Pole Flat Connectors. Custom Fit Vehicle Wiring reviews from real customers.
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CURT Custom Fit Vehicle Wiring - C55774

  • 4 Flat
  • 7 Round - Blade
  • Custom Fit
  • Trailer Hitch Wiring
  • No Converter
  • CURT

Quickly and easily install a 7-way and a 4-way trailer connector on your vehicle with this custom harness. Connector plugs directly into OEM tow package wiring harness - no cutting, splicing or tapping required.


Features:

  • Provides both a 7-way RV-style and a 4-pole flat trailer connector at the back of your vehicle to power your trailer's signal lights
    • Designed for use with a factory tow package
    • Compatible with 5-pole and 6-pole adapters (sold separately)
  • Connects quickly and easily - no cutting or splicing of wires
    • Locate connection point behind rear bumper
    • Plug in connector
  • Includes mounting bracket and hardware
  • Comes with protective covers for connectors
  • Assembled in the USA
  • Limited 1-year warranty


Installation

This custom-fit connector plugs into your vehicle's factory tow package wiring harness, which is located behind the rear bumper, on the driver's side.


Once installation is complete, the connectors will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket is included to keep the connectors secure.


It is recommended that you use a small amount of grease on all electrical connections - the plug on your automobile and the 7-pole and 4-pole connectors - to help prevent corrosion.



55774 Curt T-Connector - OE Multi-Socket Upgrade

Installation Details C55774 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:


Customer Reviews

Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 7-Way and 4-Pole Flat Connectors - C55774

Average Customer Rating:  4.7 out of 5 stars   (624 Customer Reviews)

Quickly and easily install a 7-way and a 4-way trailer connector on your vehicle with this custom harness. Connector plugs directly into OEM tow package wiring harness - no cutting, splicing or tapping required.

by:
2015 Ford F-250 Super Duty

Functionality is perfect. Plugs right in to factory plug and both the 7 pin and flat 4 plugs work fine.
The biggest problem is with the bracket. After mounting, the bracket sits too high to allow the 7 pin cover to lift up high enough to use. The cover hits the bottom of the bumper when lifted. I needed to use it right away, so I zip tied the plug to the hitch. Eventually I will extend the bracket to mount the plug properly.
Real instructions would be nice. The factory website instructions are insultingly worthless

Gwendolyn Y. profile picture
Etrailer Expert

Gwendolyn Y.

10/9/2024

That sounds bothersome to deal with. You were on the right track with the zip tie method. We have a bracket that will extend out away from your bumper and attaches to your hitch using hose clamps, part # C57202.



by:

The Curt T-Connector vehicle wiring harness fit as recommended by the etrailer.com customer service representative. I wanted to be sure the electrical connector package would fit my Draw-Tite hitch, and it did. The instructions were straightforward, although there were no screws or nuts to attach the metal bracket to the hitch. I had to supply those. I believe they should have been part of the kit. The installation video on the etrailer.com site was very helpful.



by:
Chevrolet TrailBlazer

This connector worked perfectly on my '06 Chevy Trailblazer. It was very easy to swap it out with my original connector, and the addition of the 4-pole plug makes it easy to eliminate the 7 to 4 pin adapter.



by:
2007 Chevrolet Silverado Classic

Excellent fit, oversized spare tire still fit underneath (285/70r17).



by:
2010 Chevrolet Silverado

Very easy, plugged right into the uscar connector, drilled 2 holes for the bracket, done



by:

I haven’t even installed it yet, but giving 5 stars for the customer service and fast shipping. It’s just a harness, the cheapest I could find, but they treated me like I was a major customer.



by:
2003 GMC Yukon XL

I am having a problem with the install of the three Curt trailer components I purchased. I intentionally bought all of the same brand assuming that they would work together. The problem is that the Curt wiring harness (part# C55774) is too long and rigid. When the 7-pin connector is installed in the bracket that comes with it, it measure 5 inches until the black wire protective sleeve bends (to go under the hitch receiver frame).

The no-drill bracket (part# C57202) is supposed to attach the harness bracket to the hitch. But it is only 6.5" long, and the hitch tube is 3" wide. So with the bracket attached to the hitch, there is only 3.5" of space left to mount the harness bracket so that the screw holes line up.

I am disappointed that this is the case, especially as I called etrailer to check that the parts I was ordering would work together.

It looks like I will have to discard C57202 and drill two holes into the bottom of the hitch and mount the harness bracket directly. This is what I wanted to avoid - having to drill holes.

Heather A. profile picture
Etrailer Expert

Heather A.

10/26/2018

The 7-way bracket that comes with the wiring harness part # C55774 is designed to be installed with the wiring harness bracket hanging below the no drill bracket part # C57202. Since you are worried about the loose wiring I would recommend using some wire loom such as part # 459075-1 to protect your wiring and zip tie any slack with zip ties part # DW05726-25. I know this is not the option you wanted but I feel it is better than drilling into the hitch.



by:

Perfect fit. My truck was not equipped with a tow package so I was a little worried it wouldn’t fit. The wiring and plug were already there with a cap on it to seal it from dirt/water. Took the cap off and this harness snapped right in place. Also installed an etrailer hitch and new bumper. Very happy with the products and the installer tools and information provided by etrailer.com.



by:
2015 Jeep Grand Cherokee

Super easy, very nice! Great engineering, couldn’t have been any easier! The girls at etrailer are super friendly and very helpful! Great prices and quick shipping, too!!

Mike profile picture

Mike

4/13/2019

Great. No problems.



by:
2003 Mercury Mountaineer

This was supposed to be a plug in installation for my 2003 Mercury Mountaineer. No it wasn't. Completely different connector, and the wiring was 2 feet too short. Was able to use it after a bit of clipping and splicing.



by:

Harness was easy to install. The truck came prewired. It just needed the adapter. We dremeled our the back of the bumper (2019 Titan’s have the cut our outlined on the back side already). We had to dremel 2 side prices off the harness, but it slide right now. Then we drilled through the plastics bumper cover and the metal on the bumper and bolted the bracket to the bumper.

The 4 point is just fished between the license plate and the bumper. It was easy and it now looks factory. Very happy with how it came out! Install was a cinch!



by:
2018 Nissan Titan

I have a 2018 Nissan Titan, and while the connector was a perfect fit for connectivity to the factory connector. The Curt T-Connector wiring harness was about 6 inches short from connecting to the factory harness when mounted on the trailer hitch bracket. So, I was forced to mount it on the opposite side by drilling holes in bumper.



by:

If you have multiple trailers that either use a 4-way flat or 7-pin round connector and get tried of having to use an adapter go with this setup. I've had one on my other truck for a couple years and no problems with 'em thus far. You can technically use the old existing mount on the receiver hitch itself but the 4-way will dangle unless you ziptie it up.



by:
2002 Ford Excursion

My 2002 Ford Excursion 7.3L diesel had the original factory hitch and wiring harness. The quality and heft of the Curt T-Connector is impressive. I bet I get years of use without problems.



by:
2006 Chevrolet Silverado

Very good, fit perfectly

Greg profile picture

Greg

4/21/2024

It has been working great, holding up well,the same as the day I purchased it. Great product

BudM profile picture
Etrailer Expert

Bud M.

5/15/2024

@Greg Great to hear. Thank you for the update.
Greg profile picture

Greg

5/15/2024

It has been great works exactly as it should



by:

Great product. Installed on my 2018 Jeep GC. Because of dual 4 pin and 7 pin connector I don’t need an adaptor when swapping out trailers/camper. Clean look to it as well.



by:

Product I ordered had an inaccurate description. Contacted customer service to return they would not send return shipping label so since the return shipping would have costed more than the part I threw it in the trash and ordered the part needed from another supplier. Needless to say I will not be ordering anything again.



by:
2017 Nissan Titan XD

There was no place on the new hitch to bolt the end to, which was a disappointment. For now I sip tied the end to the hitch in an area where it does not move.



by:
2017 GMC Acadia Limited

Working well. Have used the four prong plug only but am glad to have the 7 way available if needed.



by:
2017 Ford Explorer

Always accurate parts and information



by:
2023 Chevrolet Silverado 1500

don't know yet



by:
1999 Ford F-250 and F-350 Super Duty

Top Quality! Fast Delivery! Have ordered several items from etrailer and have never been disappointed!



by:

Perfect fit, works well



by:
2004 Cadillac Escalade

Product just like it said it does, delivery just took long but is free delivery so is good, packed box came like bit out from the people delivered but localy everything works good



by:
2023 Honda Passport

Bought this because of the split 4 pin and 7 pin connectors. I’ve had so many 7 pin to 4 pin adaptors and would forget that I let my son or son in-law use it and had to buy another one when I needed it. This will stop me from the need to buy another adaptor, good for me not good for my son and son in-law when they come over to borrow the trailer. LOL, who am I kidding I’ll still go with them to the store and buy another one.


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Show More Reviews

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

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    Based on how you described it, I'm guessing your 2001 Ford F-350 Super Duty needs a different part than the # C55774, but what does the plug look like? The correct 7-way is going to depend on that, as the Curt option you mentioned is a replacement 7-way, and has a round plug, while the other has a more square plug. If you take a look at the accompanying photos, you can see the plugs for the two 7-ways that could work for your '01 F-350: - Square Plug: Ford Replacement OEM Tow Package...
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