The most common trailer side connector, the 4 flat uses four wires to carry out essential lighting functions and is easy to install on small utility trailers. Splices are provided to make for a quick installation. Product Features:Includes 3 SplicesCorrosion Resistant TerminalsMost Commonly Used Trailer ConnectorMeets SAE StandardsIncludes Three Splice ConnectorsIncludes Step-By-Step Procedures And Diagrams100 Percent Tested