Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
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2005 Chrysler Sebring
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2005 Chrysler Sebring
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Running new trailer wiring can be a pain, but this harness keeps things simple. The Curt T-Connector plugs in behind the tail lights using factory connectors, so there’s no cutting or splicing. Just match the plugs, route the 4-flat to the bumper, and you’re ready to tow.
Once installed, the 4-pole flat connector gives you the basics – running lights, brake lights, and turn signals. It’s the same standard connector most small and mid-size trailers use, so it’s easy to hook up and know everything’s working right.
The built-in converter keeps the vehicle wiring safe by managing how the trailer’s lights draw power. It isolates the trailer circuits so you don’t overload or backfeed your vehicle’s lighting system. That means steady, clean signals for your trailer every time.
If you ever need to tow something with a 5-way or 7-way plug, this 4-flat is a solid starting point. You can attach simple adapters like part #20036 or use a kit such as #ETBC7 to add full brake and charge lines later. It’s a straightforward way to grow your towing setup without redoing your wiring.
Customer Satisfaction Score:
96% were satisfied with this product
4% of customers were not satisfied
Ratings & Reviews
Excellent product. I installed trailer hitch and trailer wiring harness by myself 2.25 hours. Etrailer 1st class. Fast shipping. No complaints at all.
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Wire length was perfect . Plenty of slack . The directions are inside the package and are simple . Vague on a few little parts but if you search out the answers it’s simple . The lights on my truck worked after installing just as they did prior to the job and I will test the u it tomorrow when my tester arrives , or if I just back up to my boat . I loved the included zip ties to get the wires neat , and the whip is long enough to put literally anywhere . I’d buy this again for sure . The connectors snapped in solid as I would expect for a quality product . So far a great purchase .
Scott
1/3/2022
This product failed and it was a pain in the ass to get it all worked out as far as the warranty thing goes … understandable since people scam all the time but man , I wasn’t too happy about the process . The new one works fine and has worked fine and I will for sure be getting a backup unit so if it fails while I’m on the road I’m not stranded because of an easy to fix plug and play part . It was easy to install for me … it seems to be working great at this point and I take my trailer for a drive a few times a month to keep it all working .
Super easy install. Video was perfect. Whole thing took 15 minutes
I purchased a wiring harness a year ago for my 2013 Toyota Tacoma Pickup to haul my utility trailer. The installation instructions were very simple and clear. I installed the harness within an hour without any problems. It's working great when I need it and would recommend this product and any other from Etrailer. I have purchased many items from Etrailer thru the years and find the videos and other instructions very helpful with the installation. Great prices, great products and above all great support!
Gary L.
10/21/2017
its still working great. No issues at all
My pickup had a new frame installed due to a manufacturer's recall. During the installation the old wiring for the trailer lights was taken out. I didn't want to pay for a commercial company to reinstall a wiring kit after I saw how easy this system was for installation. The Curt custom fit vehicle wiring was as easy to install as claimed. I have limited mechanical experience so I would say anyone who can read directions and has a few tools can do this.
Lee E.
3/5/2018
Im still very pleased with it and would recommend it to others.
So far good thanks. Do you all make one for a 2000 year model pick up truck
Jose
10/12/2025
Its a really awesome product it was very easy to install and it works great
Very easy to install and works great.
It worked great in the end, but the instructions were unclear so I had to rewire it.
Nicely built and easy to install. Pretty intuitive once you see the connectors. Came with a screw for the ground lug, but I connected it to an existing bolt using an M6 nut.
Only one of the lights worked on my boat trailer. Will keep trying to see what the problem is. Might be that I need to reposition the ‘Sender’ onto the trailer so that it can have a more direct access to the lights. Perhaps the boat is interfering with the signal?
Reliable, strong, easy to install. Fit perfectly
Quick and easy to install.
Fairly easy to install the receiver by myself. I cheated and used a motorcycle lift to help get it in place and hold it.
Kenneth
6/12/2025
Still functioning as it should.
Was purchased for my T100 and it clicked right in to OEM harness. Was able to wrap it to existing harness for a clean look, and trailers now show both running and brake lights.
Easy to install. No splicing! Very sl ick.
Super simple plug and play, impossible to mess it up. I forgot to look at the included materials like the zip ties and double sided tape to mount the box. I used my own materials, and found an exposed bolt where you can attach a 10 mm nut. Worked immediately, just make sure to find a good grounding point. Only way to make it even better is to bring your own plastic conduit to cover up the colorful wires.
That's my kind of wiring. I shopped around for installing trailer wiring. Prices were as high as $100. ! This kit for my Toyota Tacoma cost $35. I loosened four bolts, drilled in a ground screw. Plug and pull wire and done. I was able to pull the wired to the far side throughout the hollow receiver hitch. Didn't even need the zip ties. Great company. Thanks
package arrived in perfect condition in a timely manner was easy to install and fit perfectly everything works. Thank You for a good product
Install took 30 mins. Plug and play. Zip ties and done. Great product.
Very easy to install, the video was helpful. The time estimate was right on.
Harness was completely plug and play.... really easy installation... plus I want to give Joanne a big thanks for helping me thru my lighting problem... I will order my trailer parts from you exclusively :)
Very easy to follow video instructions on your website. Excellent product. I highly recommend it to anyone that does not have an electrical plug but has a receiver hitch.
Simple install. Good quality wiring. Only complaint would be adhesive pad is junk and the plug cover fell apart. Would recommend this product. Used my own adhesive pad.
Went through a couple of these harness did not work. On my wives suv. Inline Fuse kept blowing ground was good correct fuses used and wires /plugged in correctly it just didn’t work.they sent me a replacement and it didn’t work either. I bought a hitch as well and that worked as it should though I can’t use it because of lights not working properly.A small truck come up that I couldn’t pass on and use that for towing which I bought another hitch from here and a wiring harness that actually worked. So if you buy one and it blows fuses the wire harness will probably not work even if replaced just send it back and go a different rout.
The reciever hitch and plug and play trailer light connector fit perfectly. The gentleman on the phone knew his stuff and was very helpful. Would definitely purchase from them in the future for any of my trailer needs.
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John G.
4/3/2015
Excellent. Moved from Georgia to SC with truck pulling UHaul. Did Great!