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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
2020 Chrysler Pacifica
CURT

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

Part Number: C56174
In Stock
$84.76
Retail:$147.95
You Save: 43%
Custom Fit Vehicle Wiring
Not Confirmed to Fit

2020 Chrysler Pacifica

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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 C56174 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 (16)
  • Q & A (0)
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CURT Custom Fit Vehicle Wiring - C56174

  • 4 Flat
  • No Tow Package
  • Trailer Hitch Wiring
  • Vehicle End Connector
  • Plug-In
  • CURT
  • Plug and Lead
  • Powered Converter
  • Hidden

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
  • 1-Year limited warranty


Installation

This custom-fit T-connector plugs into your vehicle's wiring harness, which is located in your rear cargo area. To access this harness, you will have to remove the rear scuff panel and pull back some of the trunk liner. Once you've plugged in the T-connector, run the hot lead up 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.



56174 CURT T-Connector - Surface Mount Technology - 4 Wire

Installation Details C56174 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:

Ratings & Reviews

4.8

16 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:

Excellent new "plug & play" version to the outdated wire splice type. Solid and dependable. Exact fit for our Fiat. Using the system currently. 5 Stars.

Gary K. profile picture

Gary K.

6/20/2023

Perfectly. The pigtail wiring is used at least 4 days a week for our mini-trailer for hauling items too large for our hatchback. Still 5 stars!



by:
2016 Fiat 500

Missing a gasket. This worked well and included quality wire power supply/ground wire. Butt-connectors were of the cheap variant, though, not water resistant by any means. Instructions aren’t clear, no indication of what side the module goes on vs what side the green wire goes. Fine print at the bottom of the instruction sheet showed a wiring legend. Green wire is right. Got it.

The green-wire side T connector is missing its water resistant gasket. Filled it full of dialectic grease to get me going for now.



by:

Hesitated for a few weeks ,,,,looked at obstacles ,, then got down to getting it installed. Took me 3 hours fiddling with details and it was completed . A week later one of the taillight fixtures was not locked in perfectly,,, loosened 2 screws and reset the fixture , retightened 2 screws, done

Robert profile picture

Robert

5/31/2024

A year later ! I’m impressed with the wiring harness,,,, no adjustments needed or failures,,,,did replace a trailer lite lens that broke and added a pair of amber side lights and had no effects on the harness



by:
2013 Honda Element

What makes this hitch system a sure winner is the absolute ease and accuracy of the installation. The video is an outstanding addition to walk you through almost everything. I say almost, because the one missing element is a 'how-to' on installing the positive lead to the battery. I'm still wrestling with whether or not to run it internally or externally. Aside from that, I was able to put the rear of my 2013 Fiat Abarth on solid stands which gave me ample room to do everything. Although the video suggested pulling additional supports off of the exhaust system to make it easier, I found that it wasn't necessary (and besides, since the car wasn't on a lift, as in the video, accessibility was a bit tougher). The entire installation took about an hour because I was pausing periodically to watch the video and make sure I wasn't missing anything. Someone more mechanically skilled could probably do this in less than 30 minutes. Well done, etrailer!



by:

Easy installation with the exception of routing the hot lead to the battery. A recommended path would be an improvement here as the coil springs must be avoided.

Michael S. profile picture

Michael S.

5/19/2018

No problems.

Rachael H. profile picture
Etrailer Expert

Rachael H.

5/19/2018

Thanks for the follow up Michael. I am sorry this was not included previously but we do have a helpful article that provides recommendations on how to route a power wire to the battery.


by:
2013 Fiat 500

In my case, it arrived securely packaged within the Hidden Hitch box. At the writing of this 'review' - I haven't installed it yet. TBD.



by:
2015 Fiat 500

Nice quality because the shank that goes into the hitch is solid but hallow like the ones from other sources.



by:
2012 Fiat 500

Well made, easy to install and worked perfectly.. We just sold the car and I removed the wiring harness so I can install it in our next fiat.. Highly recommend this product. Mahalo



by:

It's very easy to hook up I'm glad I bought it works great no problems



by:
2013 Fiat 500

Good part. I bought this for my van and works well.



by:

works just like the package says. easy install



by:

Nice product.



by:
2012 Fiat 500

easy install, works great!



by:



by:
2015 Fiat 500

Great



by:
2012 Fiat 500


16
16

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

  • Cargo Carrier and Light Kit for Class I Trailer Hitch on 2015 Fiat 500
    Those are good questions and with a Class I trailer hitch like the Curt Trailer Hitch # C11363 that fits your 2015 Fiat 500 you do need to use a Class I compatible accessory like a cargo carrier. That means could use the Class II Reese cargo carrier you mentioned, but it wasn't designed for it. There is a very similar carrier which will work. Also, to answer your question about the weight of the hitch, it is about 25 lbs. The Curt Cargo Carrier # C18110 is compatible with a Class I hitch...
    view full answer...
    Image 1 for
  • Trailer Wiring Harness for Fiat 500 and Tail Light Isolating Converter for Trailer 3-Wire System
    The Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C56174 will still be what you need for your vehicle. The adapter you need for your trailer will actually be on the trailer side. I recommend the Curt Vehicle to Vehicle Tail Light Converter # C56196 which will separate the combined turn and stop light signals for your trailer function. You will want to use a diode like # 38955 on the tail light function to prevent power feedback.
    view full answer...
  • Is Curt 4-Way Wiring Harness Compatible With 2017 Fiat 500E
    That's a really good question, so I checked with Curt for you and verified there are no restrictions on their wiring harness, and it is absolutely compatible with your 2017 Fiat 500E; the harness that fits is the following: - Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C56174 So you can use this harness without any issue with your '17 Fiat 500E, and if you also need a trailer hitch for this vehicle, I went ahead and verified for you that Curt has a hitch...
    view full answer...
  • Can Curt Plug and Play Flat Tow Wiring and 4-Way Be Installed At The Same Time On 2013 Fiat 500
    Since the Curt # C58911 and # C56174 use the same connection points you will not be able to install both at the same time. If you really want to swap them out when you tow/flat tow you can but that is going to be a big hassle. Instead, I recommend using the # C59236 which splices in for installation. It isn't ideal when there is a plug and play option but it will let you keep both installed on your vehicle.
    view full answer...
  • Curt Receiver Hitch and Wiring Harness for a 2013 FIAT 500 Sport Cattiva
    Yes, the Curt Trailer Hitch Receiver Custom Fit Class I - 1-1/4" item # C11363 is a confirmed fit for your 2013 FIAT 500 Sport Cattiva. The Curt Receiver Hitch is a confirmed fit for all models except the Abarth of the 2013 Fiat 500. That receiver's maximum gross trailer weight is 2,000 lbs and the maximum tongue weight is 200 lbs. I recommend the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector item # C56174. This harness plugs inline with your rear tail lights...
    view full answer...
  • Trailer Hitch Recommendation for a 2016 Fiat 500X
    I checked with Curt and the trailer hitch part # C13271 that you referenced has been confirmed as a fit for all models of the 2016 Fiat 500X so it would work well on your all-wheel drive model. 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 or 4 inch drop. It also includes a 1-7/8 inch ball, 2 inch ball, hitch pin with clip, and a storage bag. If...
    view full answer...
  • Wire Colors on the Curt T-Connector Vehicle Wiring Harness Part # C56174
    In regards to the Curt T-Connector Vehicle Wiring Harness part # C56174 which is a fit for a 2012 - 2018 Fiat 500 and a 2012 - 2017 Fiat 500 Abarth, the wire colors after the converter are as follows: Green: Right Turn/Stop Light Yellow: Left Turn/Stop Light Brown: Running Light White: Ground The t-connector with the yellow wire will go to the driver side tail light housing and the t-connector with the green wire will go to the passenger side tail light housing.
    view full answer...

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


Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
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

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