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Adding trailer wiring usually means cutting into factory wires, but this harness avoids that. The Curt T-Connector plugs directly into the tail light connectors, giving you a clean 4-flat trailer connection. It’s a straightforward plug-and-play setup that keeps your factory wiring intact.
When you hook up your trailer, the powered converter keeps the vehicle’s electrical system from being overloaded. It draws power straight from the battery instead of other circuits, so your trailer lights won’t dim or shut off due to shared power. That extra protection keeps both systems running smoothly and safely.
If your vehicle didn’t come with a tow package, this harness makes it easy to add one. The included power lead runs right up to the battery, giving you everything you need for proper trailer lighting. It’s a smart fix for anyone setting up towing for the first time or upgrading from a basic setup.
The 4-pole flat connector provides running lights, turn signals, and brake lights—everything needed for standard trailers. Once installed, it delivers reliable communication between your vehicle and trailer so your signals always stay in sync on the road.
Customer Satisfaction Score:
92% were satisfied with this product
8% of customers were not satisfied
Ratings & Reviews
The installation was easy, and their video on the installation helped along the way. The shipment arrived fast and on time.
I viewed the video for the C29ZV and it was help full BUT in the video the control box that you run a wire to the battery to is on the driver side were there is all kinds of room were he zipe ties it to the factory harness but the C29ZV harness I got the control box is on the passenger side and you have to mount it above the muffler . that is stupid. All you have to do is make the green wire short and the yellow and brown long and it will work like it is in the video. CHUCK
Arrived quickly and was easy to install by video instructions.
This is the 3rd or 4th trailer hitch I've ordered over the years. Always a perfect fit.
Easy to install. Watch the video and it guides you through every step including tips for the challenging parts. Thank you!
While I have not installed it the connections all appear to be correct. Good instructions. I had an issue with delivery however but no fault of etrailer. The package went from Missouri to Indianapolis, then to Arizona, then back to Ohio then to me in Pennsylvania. Took extra 3 days to arrive.
Instructions are spot on.
This works good on a 2024 KIA Telluride EX with LED rear lights.
Harness was the exact fit
There were no install directions for my vehicle So it appeared not to fit. I talked to Bay at etrailer and he found out it could work but I had to take the rear door apart for it to work so I am returning for refund
Great customer service!
Worked great all wires were long enough to work. However an $80 wire harness could have included a fuse in the holder. Inconvenience after install have to go hunt down a fuse
As described- installed using jack stands and a couple of hours.
Product worked perfectly.
Good instructional video, perfect fit on harnesses, and got me up and running!
The only improvement would be to include 2 weather proof heat shrink butt connectors in place of the 2 standard crimp butt connectors.
Super easy to install, with a video in YouTube. All the parts needed are included and fit perfect. The some of the directions were missing but again, watch the YouTube video and it pretty much cake. Took about 1.5 hours by myself, using a floor jack.
Shipping, excellent. Packaging was good, the boxing could use 3 reinforcing points. Instructions spot on. Receiver very easy to install. Wiring harness install a little more in-depth. Running the power/ hot wire from battery to receiver while laying on your back, watching for pinch points, chafing areas & exhaust & Ty wrapping is a 2 hr job. Receiver & harness 4 hours start to finish. Watch videos first, save yourself $[XX]-$[XX] dollars by doing a fairly simple install !
Instructions were easy to follow. The power wire that is needed ran to the battery. I put it in black split wire loom and hid it and secured it all the way to the battery. Everything looks good and works great.
First I'd like to thank you for your attentiveness. The installation was fine, everything works as it should and I look foward to being able to tow my trailers with my Telluride and not my old truck. Thanks again.
Two wiring harness purchased in less than a year. Both units have gone bad already. Although they were professionally installed it was my fault.
I wish the harness would of been able to plug into the factory connector
Made connecting to existing car wiring seamless.
Video for installation instructions was excellent. Everything went together exactly as expected and fit well. I would like to see a better quality of wire connectors supplied along with shrink tubing but this is minor and can be taken care of easily.
The installation went exactly according to plan, and the final install looks great. I used a mechanic's creeper and some ramps, which was extremely helpful. The videos on the website were excellent, showing every little detail. I cut an extra hole in the bumper for a 7-way connector, and I'm very happy with how it turned out.
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Brooke M.
7/9/2025
I personally haven't ever seen someone add the hole to the bumper for the 7-way...it looks so clean! Thanks for sharing the photo and your genius!