Universal trailer wiring adapter for connecting a 4-way flat trailer plug to a vehicle equipped with a 6-way round socket. Simple plug-and-play design requires no cutting or splicing.
The Curt 57621 provides a simple solution when a tow vehicle is equipped with a 6-way round socket but the trailer uses a 4-way flat plug. The adapter plugs directly into the vehicle socket and accepts the trailer connector without requiring cutting, splicing, or rewiring.
The 4-way flat connection carries the basic trailer lighting functions, including taillights, brake lights, and turn signals. Its compact universal design makes it convenient for towing setups with mismatched vehicle and trailer connector types.
Connects a 4-way flat trailer plug to a 6-way round vehicle socket
Works with standard matching 6-way round and 4-way flat connectors
Plug-and-play design requires no wiring modifications
Supports tail, brake, and turn-signal circuits
In The Package: • 6-Way Round to 4-Way Flat Electrical Adapter