Product Overview
Adapter plugs simplify trailer wiring by seamlessly connecting to your vehicle’s electrical socket, typically requiring no additional wiring. CURT offers a wide array of these adapters to bridge the gap between mismatched vehicle sockets and trailer plugs, accommodating common types like 4-way flat, 4-way round, 5-way flat, 6-way round, and 7-way RV blades.
Specifications
- Curt Brand
- Part Number: 57621
- 6-Way Round to 4-Wire Flat L.E.D. Adapter
- Simple plug-and-play design eliminates the need for cutting or splicing
- 4-Way flat output connects tail lights, brake lights and turnsignals
- Built in LED testers
- will test – right turn & brake, left turn & brake, & taillights








