Trailer Wire Connector - 4-Wire Flat Connector - Vehicle To Trailer Wiring Connector - 4-Wire Flat Connector - Vehicle To Trailer Wiring Connector - 10 ft. Flat Extension - Ideal For 5gh Wheel Trailers. Features: Extends Wiring System. Passes Through Vehicle Ground. Most Commonly Used Trailer Plug. Found On Small Boat/Utility. Includes Six Splice Connectors. Includes Step-By-Step Procedures And Diagrams. 100 Percent Tested. 90 Day Warranty From The Date Of Original Purchase. The Image of Difference. The Image of Difference isn t just a nice sounding slogan. It describes a business philosophy that has been the cornerstone of our business for almost a half century. As we approach our 50th Anniversary we can recall how time after time innovative Hopkins products have redefined what s expected and gone beyone the ordinary. From establishing a standard in headlamp aim - providing safer vehicles on the road to introducing the Hoppy Ice Scraper-in-a-Mitt - the number one selling gift item in North America... Hoppy is known for innovation. If you haven t purchased Hoppy products before you re in for a pleasant surprise.