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When you’re ready to wire up your trailer lights, this harness makes the job simple. The Curt T-Connector Vehicle Wiring Harness for Factory Tow Package – 4-Pole Flat Trailer Connector plugs right into the existing factory tow package port. There’s no splicing or wire tracing needed—just connect it and you have a working 4-way flat trailer plug ready for running lights, turn signals, and brake lights.
This harness hooks up to the square connector provided by the factory tow package, so you can mount it neatly with accessories like a 4-Pole Flat Bracket or No-Drill Long Bracket if you want a tidy finish. It keeps everything organized and out of the way while protecting your wiring from road grime and snags.
By plugging directly into the vehicle’s tow package wiring, this harness delivers a strong, uninterrupted signal to your trailer lights. You get consistent power for every trip—no loose connections or guesswork. Once installed, it’s ready whenever you are.
If you decide later to add a brake controller or 12V line, this same harness can serve as the lighting input for an upgrade kit like a 7-way adapter. That means you can start with the basics now and expand your setup later without having to redo your wiring.
Customer Satisfaction Score:
83% were satisfied with this product
17% of customers were not satisfied
Ratings & Reviews
very satisfied thank you so much !!!!!!
As agreed.
Excellent product and service
Great quality, fit right together, looks stock.
Great fit and good value.
Everything I've ordered always shows up on time and works well. No problems with any equipment. Will defenantly keep using you guys.
Product was received promptly and was exactly as described, fit perfectly on vehicle and is working GREAT!
Plugged it in asap and works fine.. Got express shipping was here sooner than I ever dreamed... Sure I will be back for more... Thank You
was just what I needed and worked great. plugged the trailer into the t-connection and trailer lights worked.
The product was just what I needed, but was advertised as a T- Connector when it was just a pig tail. But I knew that was what I needed when I ordered it. So it worked out fine for me but could be misleading to some people.
direct fit ez instalation go perfect , regarding to buyer exp. good fast shipping , def do business with you guys again
thank you
rui azevedo
Just what was needed. The harness installed easily and looks to besturdy and well made. Customer service with questions & answers was good with plenty of suggestions given by eTrailer. Thanks a bunch.

Carl
12/6/2022
it is great. Well made, water tight NOO SHORTS in the electrical system. You can tell whomever designed this has used them before.
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Rui A.
7/3/2014
Very good