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Wiring a trailer can be a hassle, but this harness keeps it simple. The Curt T-Connector plugs right into the factory connectors behind the tail lights. No wire cutting or splicing needed. It’s a straightforward plug-in setup that gets you towing faster and avoids messing with the vehicle’s original wiring.
Modern vehicles use sensitive electronics, so this harness includes a powered converter that isolates the trailer circuits. It draws power directly from the vehicle’s battery through a separate hot lead, protecting the factory system while controlling your trailer’s running, brake, and turn signals. That direct 12-volt connection ensures reliable lighting every time.
Once installed, you get a standard 4-flat connector to power your trailer’s signal lights—running, turn, and brake. It’s the common setup for small and mid-size trailers and works seamlessly with accessories like 4-to-7-way adapters when you’re ready to tow more complex setups.
Even if your vehicle didn’t come with a tow package, this harness has you covered. The plug-and-lead design provides everything needed for proper trailer lighting without adding extra modules or tapping into existing circuits. It gives you full lighting function while keeping the install clean and hidden behind the panels.
The Curt T-Connector Vehicle Wiring Harness #C27BR only powers trailer lighting functions and must have its own dedicated power wire to the battery. It should not share a power circuit with other adapters or controllers. Always install the fuse close to the battery for proper circuit protection.
Customer Satisfaction Score:
96% were satisfied with this product
4% of customers were not satisfied
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Gwendolyn Y.
3/11/2025
Your husband and son did a great install! What are you going to be towing?