To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
Wiring for a trailer can be intimidating if you’re not looking to cut into factory wires. The Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector keeps things simple with a plug-in design. It connects directly to existing vehicle plugs, so you can add trailer lighting without splicing or complicated wiring work.
Once connected, the 4-flat trailer connector provides running lights, turn signals, and brake light functions. That means your trailer lights up exactly when it should for safe, legal towing on the road. It’s the standard plug most small and mid-size trailers use, so once it’s installed, you’re ready to hook up and tow.
This harness includes a powered converter that isolates the trailer wiring from your vehicle’s sensitive electronics. That helps prevent overloads or faults in modern electrical systems while still powering your trailer lights properly. It’s a solid solution for vehicles without a factory tow package.
The harness tucks neatly behind panels or trim for a hidden look once installed. It leaves only the 4-flat plug accessible when you need it, keeping wires protected and out of sight when you don’t. It’s a tidy setup that looks like it came straight from the factory.

Customer Satisfaction Score:
80% were satisfied with this product
20% of customers were not satisfied
Ratings & Reviews
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.







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.