To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
Easily add a 4-way trailer connector with this custom-fit harness. The T-connector plugs into existing wiring - no cutting needed. Powered converter protects vehicle circuits and ensures consistent trailer lighting for safe towing in any conditions.
The vehicle's wiring harness is often behind a trim panel or under the cargo floor. Some vehicles may require removing interior panels or lifting carpeted sections to reach it, but once accessed, the harness installs easily with quick-splice connectors.
Plugging in a trailer shouldn't mean tearing into your vehicle's wiring. This custom-fit T-connector snaps directly into your factory wiring harness, so you can get your trailer lights up and running without any cutting or splicing. Just plug it in, and you're ready to tow.
A well-lit trailer is a safe trailer. This 4-way wiring harness keeps your trailer's brake lights, turn signals, and running lights powered and in sync with your vehicle. Whether you're hauling a boat to the lake or a camper to the mountains, your lights stay bright and visible.
Some vehicles can't handle the extra electrical load of trailer lights. The built-in powered converter draws power directly from your battery, ensuring a steady, protected current to your trailer while keeping your vehicle's circuits from overloading.
Towing means exposing your wiring to dirt, rain, and road grime. This harness features fully insulated wires and a sealed converter, helping to prevent shorts and corrosion. It's built to withstand the elements so you can tow with confidence in any weather.
No extra trips to the hardware store - this kit comes with everything you need. With fuses, zip ties, and connectors included, you can complete the installation without hunting down extra parts.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi, everybody. Andy here with etrailer. Let's take a quick look at this CURT T-connector vehicle wiring harness with four pole flat trailer connector. Now, this harness has been designed to fit your 2025 to current Kia K4, excluding the GT models, and then your Kia K5. And on custom fit parts such as this harness, I do recommend taking advantage of our vehicle fit guide here at etrailer. Just pop in the year, make, and model of your vehicle and our fit guide will confirm if this will work for you or if we have something comparable that will work for you.
Now, this custom fit trailer wiring harness is gonna make it very easy to add a trailer connector without cutting or splicing into your vehicle's factory wiring. This is going to plug into your existing wiring once you access the factory harness, which is typically located behind an interior trim panel or under the cargo floor. You may need to remove a few panels or lift some carpeting to reach it, but the installation itself is straightforward using the included quick splice connectors that you see here. Once installed, this is going to give you power for your trailer's brake lights, turn signals, and running lights. And this powered converter is going to draw power directly from your vehicle's battery instead of the factory lighting circuits.
That's gonna help protect your vehicle's electrical system from overload. The wiring is fully insulated to reduce the risk of shorts or electrical interference, while the sealed connections and protective sleeve are going to help protect this from moisture and give it long lasting durability. So this is going to include everything that you need for installation, everything that you see here. Instructions as well will guide you through the installation process. If you think you want some help with installation, on this product page, typically underneath the photo section, we have a link that will take you to our installer locator.
Click that link, answer the questions that it has for you, and that locator will find an installer in your area that etrailer has partnered with to install this for you. Well, again, my name's Andy. Thank you for joining me.
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