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.
Wiring a trailer doesn’t have to mean tearing into factory wires. This Curt T-Connector plugs directly into your vehicle’s existing wiring, so you get a clean, secure install with no cutting or splicing. Each plug matches the factory connectors for an easy fit that’s ready to go.
The included 4-flat connector gives you the standard trailer lighting functions—running lights, brake lights, and turn signals. It’s the most common setup for light- and medium-duty trailers, letting you hook up quickly and tow confidently knowing your lights work as they should.
Some vehicles can’t handle the extra load of trailer lights on their own. The built-in powered converter draws power directly from the battery instead of the vehicle’s lighting circuits. That keeps sensitive electronics safe while delivering a steady signal to your trailer every time you hit the brakes or turn on the lights.
Once installed, the harness tucks neatly out of view until you need it. When it’s time to tow, just pull out the 4-flat lead from its stowed position near the hitch. When you’re done, coil it back up and keep it hidden away. The design keeps your setup tidy and protected from dirt and weather.
If your vehicle didn’t come with a tow package, this kit has you covered. It supplies all the necessary connections to get your trailer lights running even when factory wiring isn’t there. That means you can add towing capability without having to upgrade your vehicle’s electrical system.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today we're going to be taking a look at the Curt T connector vehicle wiring harness with the 4 pull flat trailer connector. This product is going to fit certain years and models of the Acura ILX. It's going to provide a 4 way flat connector at the back of the vehicle to power your trailer's signal lights. It is compatible with 5 pull, 6 pull, and 7 pull adapters. Adapters are sold separately. It's going to come with a dust cap for the 4 way flat connector.
That way you can cover up the connection points when your plug's not being used. It's a really nice feature of the unit. It also features the included tail light converter. This is the black box that's pre wired into the kit. This is going to ensure that your vehicle's wiring matches that of your trailers. The powered module is going to pull power from the vehicle's battery which is going to avoid over loading the vehicle's electrical system.
The unit's constructed using service inaudible 00:48 technology which is going to offer consistent reliable performance. What that does, it simply maximizes the trailer light yield and intensity while producing minimal heat and it's going to ensure superior operation even in rougher conditions. Now another main benefit of a system like this is that it connects quickly and easily. All you have to do is locate the connection points behind your tail lights and then you're going to have 3 sets of connectors to get plugged in. The set with the green wire goes to the passenger side of the vehicle. The other two is going to go to the driver side of the vehicle.
Locate those connection points behind the tail lights. The unit's going to come with detailed installation instructions to indicate exactly where those are. Locate them, plug in your connectors and then you'll need to make your ground connection. Your ground wire is the white wire with the ring terminal attached to it. You want to get that grounded to a nice clean metal surface with the included grounding screw and then you'll need to mount your converter box.
You want to do this with the included double sided adhesive tape. Make sure you get this mounted to a nice clean out of the way location. Then you'll need to run the hot lead to the vehicle battery. The hot lead's going to be the black wire coming out of the converter box. This is going to get connected to the bundle of black wire with one of the included butt connectors. The other end of the black wire runs to the vehicle battery. It gets another butt connector attached to it and then connects to one half of the fuse holder. The other half of the fuse holder gets a ring terminal attached to it and gets connected to the positive post of the vehicle battery. It also comes with your 10 amp fuse and a fuse cap to keep the fuse safe and protected right there in the fuse holder. Once you have all that done, you can secure all of your excess wiring or slack in the wiring with the included zip ties, making sure all the wires are up and out of the way. Once your installs complete, the 4 way connector's going to be stowed in an out of the way location within your cargo area. I also want to recommend that you use a small amount of grease on all of your electrical connections, some dielectric grease. This is sold separately. You can fine it here at etrailer.com. What that grease does is it simply helps prevent corrosion to the connection points. Now when it comes to the maximum amperage for the stop and turn lights, we're looking at 3 amps per circuit and for the tail lights we're looking at 6 amps per circuit. That's going to do it for today's look at the Curt T connector vehicle wiring harness with the 4 pull flat trailer connector.
Customer Satisfaction Score:
93% were satisfied with this product
7% 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.
John L.
7/12/2025
The initial installation was straightforward. The instructions were clearly written. One year in, the product has performed flawlessly. It was one of the best add one that I’ve ever purchased.