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Wiring a trailer can be tricky if you have to cut into factory wires, but this harness skips all that. The Curt T-Connector plugs in behind the tail lights for a true plug-and-play install. No splicing or guessing at wire colors—just connect the factory plugs and you’re ready to power your trailer lights.
This harness uses a powered converter that pulls power straight from the vehicle’s battery instead of the tail light circuits. That keeps the factory wiring safe if the trailer ever shorts out or draws too much power. The converter isolates the trailer load so your vehicle’s fuses and electronics stay protected.
The 4-flat connector supplies stop, turn, and running light signals that work perfectly with trailers using LED taillights. The Curt T-Connector # C59DR is built to handle up to 5 amps per stop/turn circuit and 7.5 amps for running lights, so it runs standard or LED lighting reliably trip after trip.
Rather than trying to tap into auxiliary or in-bed power ports, this kit includes a dedicated power wire designed to run to the battery. That direct connection gives the converter a steady 12-volt supply for proper operation and ensures you won’t overload any factory accessory circuits. It’s a bit of routing work up front but gives long-term peace of mind knowing it’s done right.
Once installed, the 4-pole flat connector gives you everything needed for basic trailer lighting—running, brake, and turn signals. It’s the common setup for small utility trailers, cargo haulers, and boat trailers, making this harness a simple and dependable way to get your lights working every time you hitch up.
Customer Satisfaction Score:
91% were satisfied with this product
9% of customers were not satisfied
Ratings & Reviews
Service was very fast and informative. Would use etrailer anytime I needed to.
Directions need to be improved.
The hitch and wiring were great
Great product description. Quick shipping. Great tracking information
Product was exactly what I needed however I no longer needed it because I sold the vehicle it was for. Thanks though for the excellent service.
Everything lined up perfectly. Solid product and the wiring harness was perfect.
great product. literally plug and play. clear instructions and great youtube video. perfect fit for my 2022 ford maverick.
It worked exactly like it was advertised. I could not find at Ford but I found it here at etrailer. Very informative people to talk to and WANT To Help, I've found this to be the case with other products purchased from etrailer. (ETAILER Company)You have a great staff, keep doing what you are doing and you will continue to be Successful.
Ford installed my shell but could not wire third brake light. It has a 4pin but if I used that, it turned off the blindspot sensors. I found this at E-Trailer. It worked perfectly. I didn't need the trailer parts and just used the jumper/pigtails.
This is a great product, worked out excellent. Contrary to the instructions I connected it to the vehicle flexbed 12 volt source and that really simplified installation. With some purchased flexbed connectors the final assembly was all plug and play.
Lauren was on top of every question I had from the beginning to the door, Great Customer Service.
Combined with e-Trailers installation videos this harness was the perfect choice for my Ford Maverick. Installation was straight forward and all the necessary pieces were included.
Easy install for 2024 Maverick hybrid
Installed yesterday. Only issue with the install on our 22 Maverick Lariat was how to route the power lead to the battery in the engine compartment. Finally removed drivers side fasteners holding the fiber mat that encloses the entire underside and routed the wire behind the tail light, above the mat and then fished it into the engine compartment from behind the front wheel well. Everything seems to work fine so far, but a more complex install than anticipated due to fiber mat. Love the fact that no wires had to be cut/spliced and harness is completely isolated from vehicle electrical system.
The connector plugs have alignment guides that don't fit to the 2025 maverick taillight connectors. Had to shave them off for them to be able to connect together. You have to be creative when routing the wiring. I lowered the spare tire and removed the box on the right side under the taillight. The wire to the engine compartment wasn't fun either. The install took about 3 hours with no help.
Good overall product. Hitch install went well. Instructions were good and the video on the website was also helpful. The hitch trailer wiring was a pain, the instructions were not great but the video on the website was good. The install time was quick regarding the hitch but the wiring took much longer than anticipated, hours.
Works as advertised … install went well, instructions were good
John S.
7/19/2025
So far so good ... zero problems.
Not your fault but it doesn’t fit my 2025 hybrid.
Easy to install in 2024 Maverick. Plug and play with existing harness and just need to run a 12v hot write to the unit.
Brian
6/26/2025
A year later, and no issues with the wiring harness after about 10k towing and another 10k driving
Easy enough to install. I used a bunch more zip ties than came with the product, but that's the only downside.
Hitch does take more time to install on ford Maverick but everything I needed was supplied and fell comfortable with giving a good recommendation to potential buyers.
Easy to install and the video made it even easier.
The harness was pretty easy to install. Everything I needed was included except for a nut to go on the positive post. The harness works as it should and I don’t have any issues
I’m actually impressed due to I’ve done a wiring job when I was 15 years old with my stepdad on a 1973 Chevy pickup truck and we had to piece together the wire and use a lot of black electrical tape!!!!
This harness, according to the manufacturer, is NOT compatible with the Maverick XLT Hybrid despite the package states it does. Extra components are needed to make it work properly. I will be requesting a exchange / refund. Nothing against eTrailer. They don't make the parts. They just sell them. Now we all know.
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Jim
12/9/2023
Working perfectly after 1 year.