To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
Wiring a trailer doesn’t have to mean chasing wires or guessing at connections. This Curt T-Connector harness plugs straight into the existing tail light wiring to give you a 4-pole flat trailer connector. There’s no cutting, no splicing—just a clean plug-in install that gets your trailer lights working fast.
When you hook up your trailer, this harness delivers reliable power where it counts—up to 3 amps per stop/turn circuit and 5 amps for the taillight circuit. That’s plenty for most standard trailer lighting setups, so your signals stay bright and consistent every time you hit the brakes or turn.
A powered converter keeps your vehicle’s circuits safe by drawing power directly from the battery instead of the light wiring. It isolates the trailer load and prevents feedback that can cause blown fuses or flickering lights. You get dependable trailer lighting without putting extra strain on your car’s electrical system.
The harness uses factory-style connectors that snap right into place, keeping everything tidy and well-fitted behind trim panels. The end result is a clean 4-flat plug ready for running lights, brake lights, and turn signals—so you can tow with confidence knowing everything is wired the right way.
Ratings & Reviews
easy install for a novice like me works great
Great easy directions to read and easy to install
Installed on a 2002 Mercury Sable. Easy to install, works great.
Delivered quickly and as advertised. Would recommend this company for all your trailer needs.
Customer service is not a thing of the past with these folks. They really know their stuff and work hard to make the customers happy. Thank you Eric and kaya.
Great product. Easy to install. Wiring harness was a snap. Highly recommend!
I'm very pleased with the product. I use my trailer once a week, sometimes twice a week for cutting my neighbor's grass and is still working just fine no problems
I installed this harness on my 2003 Mercury Sable wagon. I had to remove one snap on connector on the harness (which voids the warranty) as my car does not have two snap connectors on the opposite tail light. Then I hard wired the remaining wire to the right turn signal on the car. It all worked fine. Great customer support from eTrailer who explained what needed to be done to avoid a warranty issue or to buy a different harness. The hard wire solution worked well.
I installed this harness on my 2003 Mercury Sable wagon. I had to remove one snap on connector on the harness (which voids the warranty) as my car does not have two snap connectors on the opposite tail light. Then I hard wired the remaining wire to the right turn signal on the car. It all worked fine. Great customer support from eTrailer who explained what needed to be done to avoid a warranty issue or to buy a different harness. The hard wire solution worked well.
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