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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
1997 Pontiac Sunfire
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CURT

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

Part Number: C56037
$112.22
Retail:$154.95
You Save: $42.73
Custom Fit Vehicle Wiring
Not Confirmed to Fit

1997 Pontiac Sunfire

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etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
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 C56037 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 - C56037

Highlights

  • Custom Fit for Your Vehicle: Works with your vehicle's wiring
  • Plug-and-Play Install: T-connector plugs into existing wiring—no cutting or splicing needed.
  • Tow Without Factory Prep: 4-way flat connector readys your vehicle for trailer lights.
  • Reliable Power Conversion: Built-in powered converter matches trailer signal load for proper function.
  • Clean Factory Look: Uses vehicle-end connectors for a secure, hidden wiring setup.
  • Simple DIY Setup: Designed for easy installation when adding trailer lighting or replacing old wiring.

Features to know about

Installs Without Cutting or Splicing: Plug-In T-Connector

Wiring a trailer usually means tracking down the right wires and making splices, but this Curt T-Connector harness plugs straight into the factory tail light connectors. There’s no cutting or taping—just click the matching plugs together for a clean, secure fit that’s ready to tow.

Works Right Out of the Box: 4-Flat Trailer Connection

This harness comes with a 4-pole flat trailer connector that gives you running lights, turn signals, and brake lights. It’s the standard hookup for most trailers, so you can connect and go without needing extra adapters or wiring changes.

Built-In Powered Converter Protects Vehicle Electronics

The integrated powered converter isolates the trailer wiring from the vehicle’s electrical system. That means your lights get the power they need without overloading sensitive circuits or causing warning lights. It’s a solid fix for modern vehicles that don’t have a tow package installed.

Clean, Hidden Install: Uses Existing Factory Paths

The harness routes through the factory trim and grommets for a tidy finish. No loose wires hanging out and no need to drill holes—the design keeps everything tucked away and protected from road grime and weather.

Specs

Electrical

  • Connector type: 4-pole flat
  • Type: Plug-in T-connector
  • Function: Trailer hitch wiring
  • Vehicle end connector: 4 flat
  • Powered converter: Yes
  • Tow package compatibility: No tow package

Comparison diagram showing Curt T-Connector Vehicle Wiring Harness with 4-pole flat trailer connector, including labeled components and connection points for vehicle wiring installation reference.


56037 CURT T-Connector - Surface Mount Technology - 4 Wire

Similar to Tekonsha 118474 and Hopkins HM11142155

Installation Details C56037 Installation instructions

This Product Fits The Following Vehicles




Ratings & Reviews

4.5

2 reviews
5 Stars
(1)
4 Stars
(1)
3 Stars
(0)
2 Stars
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1 Star
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by:
2009 Dodge Journey
Awesome service from you guys. Shipped late and your crew called to let me know 2days later it was at my door. Thank you
by:
2009 Dodge Journey
Works good. Fairly easy to install.
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See what our Experts say about this CURT Custom Fit Vehicle Wiring

  • Trailer Wiring Recommendation for a 2009 Dodge Journey
    We've had several positive reviews of the Tow Ready wiring harness part # 118474. This is the first time we've heard of one shorting out after winter. Typically these thing short out because of a short on the trailer wiring. Before you install another unit I would recommend you go over your trailer wiring looking for any corrosion or cut or exposed wires and fix as necessary. It could even be corrosion on the vehicle side 4-way from being out in the elements all winter long. Curt harnesses...
    view full answer...

Info for this part was:

Employee Leah B
Edited by:
Leah B
Employee Lindsey S
Written by:
Lindsey S
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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