Troubleshooting Curt T-Connector Not Working on a 2017 Dodge Grand Caravan
Updated 02/17/2026 | Published 06/12/2024
Question:
I bought CURT 56331 Vehicle-Side Custom 4-Pin Trailer Wiring Harness, Chrysler Town and Country, Dodge Grand Caravan , Black,Rubber fror my 2017 Dodge Caravan a couple years ago and the trailer lights dont work. It seems to be a grounding issue. I follow the instructions on installation with installing the grounding wire to the metal body panel so I am wondering if the module is now bad and that is why I am my trailer lights do not work. Thanks
asked by: Reid S
Expert Reply:
Hey Reid, thanks for reaching out!
It is possible that the Curt T-Connector Vehicle Wiring Harness # C56331 is bad, but if you suspect a ground issue then I recommend trying to make sure the metal where the ground is installed is bare metal. If you do have it connected to bare metal then I recommend trying a new ground spot to see if that resolves the issue.
Product Page this Question was Asked From
Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- Powered Converter
- No Tow Package
- 4 Flat
- Plug and Lead
- Plug-In
- Hidden
- CURT
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Q&A: How to Determine the Correct Replacement Wiper Seal For an RV Slide-Out
- Q&A: Recommended Trailer Hitch and Towing Capacity for 2018 Dodge Grand Caravan
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: Air Force One Air Jumper Kit For Spartan K2 Chassis.
- Q&A: Is there a Spacer for the Furrion Variable Speed Chill Cube RV Air Conditioner w/ Heat Pump?
- Article: Trailer Wiring Diagrams
- Q&A: Why Should I Run the Trailer Power Wire Directly to My Battery Instead of a Vehicle Power Source?
- Q&A: Replacement Lower Section Recommendation for WFCO 8955 to be Lithium Compatible
- Q&A: Towing capacity of a 2014 Ford F-150 4x4 SuperCrew 145 Inch Wheelbase 3.5L EcoBoost 3.55 Rear End
- Article: 5th Wheel Hitch Installation | The Ultimate DIY Guide
- Article: Best Bike Racks for Electric Bikes
- Article: How to Choose the Right Trailer Hitch Class
- Article: Brake Controller Installation: Starting from Scratch
- Article: Ball Mount Basics: Weight Capacity, Class, and Size
Brooke M.
2/17/2026
Hey Reid, did trying a new ground spot fix the issue with your trailer lights and the Curt wiring harness? Knowing what worked could help others troubleshoot similar grounding problems.