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Wiring a trailer usually means cutting into factory wires, but this harness makes it simple. The Curt T-Connector plugs directly into the tail light wiring to give you a 4-flat connector. No splicing or guessing which wire does what—just plug the connectors in, route the power lead, and it’s ready to go.
A powered converter isolates your vehicle’s sensitive wiring from the trailer’s electrical system. The converter draws 12-volt power directly from the battery through the included fuse holder, keeping the circuits safe from shorts or overloads. It also provides the power needed to run your trailer’s lights reliably.
The short wire from the module connects through a butt connector and fuse holder to the battery’s positive terminal, while the white wire with the ring terminal grounds to bare metal. Once these two are secure, the harness delivers signals for running lights, turn signals, and brakes right from the 4-flat plug.
The 4-way flat connector gives you the basics every light-duty trailer needs—running, turn, and brake light functions. It mounts near the hitch for easy hookup, giving you a neat, factory-style setup ready for towing.
Customer Satisfaction Score:
94% were satisfied with this product
6% of customers were not satisfied
Ratings & Reviews
Ronald G.
3/7/2020
The trailer electrical has worked great every time I have used it.
Brian W.
9/17/2019
Product failed after 4 months. Left rear turn signal would stay on solid even with the car off and keys out. I did a full wire harness wrap during installation so no shorts. Took forever to get a replacement.
Mike L.
1/5/2018
The majority of the time when a converter box shorts out, the cause is a short circuit somewhere in the wiring on the trailer. Begin by checking the trailer connector, look for damage or corrosion. Trace each circuit rearward looking for pinched or broken wires. Check that all connections are secure and protected from the weather. Carefully examine the wire insulation, look for worn or cracked spots that would allow the copper wire to contact the trailer frame or other metal and cause a short. Youll want to located and repair the short before replacing the taillight converter, or youll continue to blow out converter boxes.
Mike L.
6/1/2018
The most common reason a converter box fails is a short circuit in the trailer wiring. Youll want to closely examine the wiring on your trailer, beginning at the trailer connector and working backwards tracing each circuit until you reach each lamp. Look for loose connections or pinched wires. Closely examine the plastic insulation on the wire, looking for cracked or worn insulation that would allow the copper wire to short out on the trailer frame. If there is a short somewhere in the trailer wiring, youll continue to fry converter boxes until the short is located and repaired. Ill link you to a help article that contains lots of good information about troubleshooting trailer wiring systems.
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Mike L.
3/6/2019
A powered taillight converter should draw its power from a direct connection to the vehicle battery, but will gain its switching information via its connection to the vehicles taillight harness or tow package connector. Years ago, taillight circuits in vehicles used higher gauge wire and had enough capacity to handle the draw of the vehicle taillights as well as those of a trailer. Now that the price of copper has gone through the roof and vehicle manufacturers try to save all the weight and expense they can, the taillight circuits use smaller gauge wire that can handle the load from the vehicle taillights but not much else. Drawing the power directly from the battery also serves to isolate the tow vehicles sensitive electronics from any short circuits that might occur in the trailer wiring. Connecting the converters power feed anywhere other than the battery or where the converters manufacturer recommends can leave your vehicles electrical system exposed to possible damage.