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  1. Custom Fit Vehicle Wiring
  2. CURT
  3. 4 Flat
  4. No Tow Package
  5. Trailer Hitch Wiring
  6. Vehicle End Connector
THIS ITEM IS NOT A FIT FOR
2024 Chevrolet Trailblazer
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CURT

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

Part Number: C55546
In Stock
$60.84
Custom Fit Vehicle Wiring
Not Confirmed to Fit

2024 Chevrolet Trailblazer

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etrailer Installation
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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 C55546 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 (20)
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  • Videos (1)
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CURT Custom Fit Vehicle Wiring - C55546

Highlights

  • Custom Fit for Your Vehicle: Works with your vehicle's wiring
  • Tow-Ready Setup: 4-way flat connector powers trailer signal and running lights.
  • Plug-and-Play Install: T-connectors plug inline with tail lights—no wire cutting.
  • Reliable Signal Power: Powered converter protects vehicle circuits from trailer load.
  • Fuse-Protected Circuit: Built-in fuse prevents shorts and ensures safe trailer operation.
  • Clean Factory Look: Hidden plug-in design keeps wiring tucked out of sight.

Features to know about

Installs Without Cutting or Splicing: Plug-In Harness Design

Wiring a trailer often means dealing with splices and wire tracing, but this Curt T-Connector harness skips all that. It plugs directly into the vehicle’s existing connectors to create a clean 4-pole flat trailer connection. No cutting, no guesswork—just plug it in and it’s ready to go.

Reliable Power and Ground: Powered Converter with Fuse Protection

The powered converter keeps the trailer lights running smoothly by drawing power directly from the battery instead of the vehicle’s wiring. A built-in fuse holder protects the circuit from overloads, and a solid white ground wire ensures dependable performance every time you tow.

Hidden, Factory-Style Fit: Clean and Secure Wiring Setup

Once installed, the harness tucks neatly out of sight, keeping things looking factory-clean. The plug-and-lead design gives you enough length to route the connector where you need it while keeping wires protected behind panels or trim.

Ready for Standard Trailer Lighting: 4-Flat Connector Output

The 4-flat output provides the standard signals—running lights, turn signals, and brake lights—so you can connect most small or medium trailers with no adapters needed. It’s a simple, reliable setup that gets you on the road fast.

Specs

Electrical

  • Connector type: 4-pole flat
  • Converter type: Powered converter
  • Function: Provides trailer taillight, turn, and brake light signals
  • Installation type: Plug-in, no cutting or splicing required

Compatibility

  • Vehicle application: Designed for models without factory tow package

Features

  • Mounting style: Hidden plug-and-lead design
  • Connection point: Vehicle end connector
  • Manufacturer: CURT

Comparison chart showing multiple CURT T-Connector vehicle wiring harness models with technical callouts and wiring layouts for trailer connection reference.


55546 CURT T-Connector - Surface Mount Technology - 4 Wire

Similar to Hopkins HM11142295

Installation Details C55546 Installation instructions

This Product Fits The Following Vehicles




Video of Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
Video Thumbnail Video Player Dialog

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




Video Transcript for Curt Custom Fit Vehicle Wiring - Trailer Hitch Wiring - C55546 Review

Speaker 1: Today we're taking a look at the Curt T Connector Vehicle Wiring Harness with the 4 pole, flat trailer connector. This product fits certain years and models of the Chrysler 300. To ensure that this is a fit for your vehicle, you can always use the vehicle fit guide located at etrailer.com. This unit provides a 4 way, flat connector at the back of the vehicle to power your trailer signal lights. It is compatible with 5 pole, 6 pole and 7 pole adapters. Adapters are sold separately.

It comes with a dust cap for the 4 way flat connector, that way you can cover up the connection points when your plug's not being used. The black box is the included tail light converter. This ensures that your vehicle's wiring matches that of your trailer. The power module connects directly to the batter to avoid overloading the vehicle's electrical system, and it does that through the wiring.This is constructed using surface mount technology for consistent, reliable performance. What that does is, it maximized the trailer light yield and intensity, while producing minimal heat, and ensures superior operation even in rough road conditions.

This unit is designed to connect quickly and easily. You don't have to worry about cutting or splicing any wires. Locate the connection points in the rear cargo area and plug in your connectors. These are custom fit for your vehicle, so they're going to match up perfectly with the plugs on the vehicle, and they snap lock together for a nice tight, secure fit.Once you have those plugged in, you'll need to make a ground connection. That's your white wire with the ring terminal attached to it.

You want to get that grounded to a suitable grounding location with the included grounding screw. Then, you can mount the converter box to a safe, out-of-the-way location. You can do that using the included cable ties, as well as the double-sided, adhesive foam tape provided in the kit. Then you'll need to connect your fuse holder. Now typically, these connect to the positive posts of the vehicle battery, but in this case what you'll do is, on the passenger side you'll need to locate the vehicle's positive battery cable on the fuse box and then remove the nut and place the T connector's power ring terminal on the stud, replace the nut, and then install the fuse in the fuse holder.

That's how it connects to the vehicle battery, again through the wiring and this connects in the fuse box on the passenger side of the vehicle, which would be at the rear.It has a ring terminal pre-attached to it. Get that connected to that positive post that we we're talking about, where the positive cables ran, in that fuse box, and then it comes with your 10 amp fuse, goes directly in the fuse holder, has a cap to go over it to keep it safe and protected. Once you have everything connected, you can secure any excess or slack in your wiring with the included cable ties. Once the install is complete, the 4 way connector will be stowed in an out-of-the-way location within your cargo area, plenty of wiring here so you can extend it out the back of the vehicle when you need to use it. Roll it up and tuck it away when you don't.It is recommended that you use a small amount of dielectric grease on all your electrical connections, like the plugs on the vehicle and the 4 pole connector itself. That grease is sold separately and it's available at etrailer.com. It's designed specifically to prevent corrosion to the connection points. When it comes to the maximum amperage for the stop and turn lights, we're looking at 3 amps per circuit, and for the tail lights we're looking at 6 amps per circuit. The unit also comes with detailed installation instructions to help walk you through the whole process, step by step.That's going to do it for today's look at the Curt T Connector Vehicle Wiring Harness with the 4 pole, flat trailer connector.

Customer Satisfaction Score:

Ratings & Reviews

4.9

20 reviews
5 Stars
(18)
4 Stars
(1)
3 Stars
(1)
2 Stars
(0)
1 Star
(0)
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by:
2006 Chrysler 300
Curt Wiring Harness installed neatly in Trunk of my Chrysler 2006 Hemi C. Stores safely in trunk, out of site when not in use.
Steve W. profile picture

Steve W.

8/25/2017

Working out great after 1 year !

by:
2009 Chrysler 300C
I recently ordered 13465 class III hitch and this C55546 vehicle wiring harness for my 09 Chrysler 300C. It was very easy to install and times provided were very close. It took me just about two hours to install the hitch and harness. I did however stray a bit from the instructions on the harness though to make it more permanent and secure. Drilled hole in trunk floor pan and ran harness through it with some wire loom and a grommet. Then drilled a small hole in flat part of safety chain bracket on hitch to secure harness to hitch. I was a first time customer and would diffently use etrailer.com again.
by:
I highly recommend this wiring setup. There was no cutting or crimping; just pull the original light connectors out then plug in to the ends on the tail lights and the plug in the other side and you are ready to go. I did it myself in less than 25 minutes and am very pleased. No problems and well worth the money spent.
John
by:
Right one works perfect
by:
I use this trailer on a daily basis for my lawn and tree business. It’s small enough to use my car to pull it, and the handling is precise. I’m hoping to invest in a larger trailer once I have a truck. The wiring harness was simple to install and works fine.
by:
2007 Polaris RZR
I recently purchased this hitch and wiring harness for my car so I could haul my Polaris rzr. The products were installed with ease, only issue I had was rusted threads on my car. A little spay or a tap solved this issue. The hitch handles the load well. I would recommend this supplier to anyone. Fast delivery and good service. Instructions are detailed and complete. Videos are a plus, very helpful.
by:
2005 Chrysler 300C
I have installed lighting kits on cars for many years. This kit was GREAT. Two easy connections for power and ground and the rest were plug and play. Really a nice kit and well worth the cost.
by:
2005 Chrysler 300C
This was very easy to install with good instructions and has worked great ever since I installed it. No problems.
by:
2009 Chrysler 300C
This has been an extremely smooth transaction. I highly recommend this business. The product is exactly what we wanted. Thank you etrailer.com!
by:
2006 Chrysler 300
works like it was advertised ! easy instalation no problems
by:
This is a super product, expertly designed and manufactured. Easily installed, all connection points are easily accessed in trunk area.
by:
Excellent price and arrived much faster than we expected!!
by:
A+++ as described!!
by:
Quick 10-15 minute install. Very quick and easy. Thanks
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2003 Chrysler 300
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2008 Chrysler 300
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See what our Experts say about this CURT Custom Fit Vehicle Wiring

  • Trailer Wiring Harness Recommendation for a 2008 Chrysler 300
    You are going to have to install a wiring harness with a converter box to be able to install a 4-way on your 2008 Chrysler 300. You are correct, because the taillight circuits of your vehicle are separate and the taillights on most trailers are combined a converter box is required. The Curt wiring harness part # C55546 would be the correct harness for your vehicle and would install pretty easily.
    view full answer...
  • Troubleshooting Curt Trailer Wiring Kit # C55546 Not Active After Install
    Check to make sure the fuse is in the fuse holder of the Curt trailer wiring kit part # C55546 as well as the white wire is grounded properly. Typically when this problem arises the issue is the fuse not being installed.
    view full answer...
  • Recommended Hitch and Related Towing Components for 2008 Chrysler 300
    Two sizes and weight classes of hitch are offered for your 2008 Chrysler 300. These include several of the 1-1/4-inch Class II type and one of the 2-inch Class III type. All things being equal I suggest the 2-inch Class III hitch # 13465 from Curt since this size hitch will be more widely compatible with a range of hitch-mount accessories like bike racks and cargo carriers. An install video is linked. All you will need to add is the hitch ball, either a 1-7/8-inch (# 19256) or 2-inch...
    view full answer...
  • Recommended Trailer Hitch and Parts To Tow a Trailer with a 2008 Chrysler 300
    The Draw-Tite Max-Frame Trailer Hitch Receiver part # 76145 is what I recommend for a 2008 Chrysler 300. It has a class III rating with 2" receiver tube opening which will allow for a greater towing capacity and more ball mount options to choose from when compared to the other class II, 1-1/4" receiver tube options. In order to complete your towing setup you'll need a wiring harness, the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C55546 and a ball mount/hitch...
    view full answer...

Do you have a question about this Custom Fit Vehicle Wiring?


Info for this part was:

Employee Leah B
Edited by:
Leah B
Employee Lindsey S
Written by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
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

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