Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
This item does not fit your vehicle
2002 Ford Excursion
These items fit your vehicle
2002 Ford Excursion
To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.
Getting your trailer lights working shouldn’t mean cutting into factory wiring. This Curt T-Connector plugs directly into the vehicle’s existing tail light connectors, creating a clean, factory-style setup with a 4-pole flat trailer connector on the other end. It’s built as a plug-and-lead design, so there’s no guesswork or wire tracing—just connect the matching plugs and you’re ready to tow.
The harness includes a powered converter that draws power directly from the battery instead of the tail light circuit. That extra power wire keeps the tail light system from being overloaded, which prevents blown fuses and dim lights when towing. It’s a simple step that protects the vehicle’s electrical system while keeping trailer lighting bright and reliable.
This setup tucks neatly behind panels with a hidden connection point at the vehicle end. The converter box and leads stay out of sight for a factory look, and the 4-flat connector is easy to route near the hitch when you need it. When done towing, it can be stored behind trim or under a panel to stay protected from dirt and weather.
The 4-pole flat connector gives your trailer running lights, turn signals, and brake lights—all in one simple plug. It’s the most common trailer light connection out there, so it works great for small utility trailers, campers, or cargo haulers that don’t have electric brakes.
Customer Satisfaction Score:
89% were satisfied with this product
11% of customers were not satisfied
Ratings & Reviews
John
5/23/2024
A year later, Curt 4 prong electrical harness still working flawless. I love the simple unplug, plug harness in, and immediate trailer lights, brake lights. Dont miss the days of wiring trailer connectors. Install was less than 30 minutes. Cant beat that...
Jerred H.
5/29/2024
Jenny N.
12/28/2022
Of course making the right connections is important. I reached out to Curt and found that the G11E8 8 pin connector is typically the blind spot monitoring connector. The tail light connector is hard to get to. I recommend viewing the video installation that we have on a 2020 Hyundai Kona and look at time stamp 10:15. It is possible that the connector would not be blue however it would match the wiring harness connector to connect together.
Roy R.
3/26/2025
Working great, I use it at least once a week.
Jameson C.
3/26/2025
Brooke M.
4/11/2025
Sorry to hear it was such a hassle but I really appreciate you taking the time to share your experience with the install. I bet you won't be the only one who faces this issue and since you shared your solution, someone else now knows what can work. Thank you very much, Bob!
Cncmoldsnstuff
4/11/2026
Never used it again, because the hitch transmits one hundred percent of the trailer noise directly to the inside of the drivers compartment
Mark
7/13/2022
Great no problems
Paul
12/10/2023
No problems in the first year. Instructions on this were good. It has connected our little tear on a few trips.
Do you have a question about this Custom Fit Vehicle Wiring?
Info for this part was:
At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Joe
4/10/2022
Very well thank you. I use my trailer weekly and my running lights work perfectly