Hopkins 43535 Plug-In Simple Vehicle to Trailer Wiring Kit Hopkins Manufacturing Corporation is highly recognized as the automotive industry leader in towing electrical products Uses a short-proof power taillight converter for vehicle electronic protection Utilizes OEM connectors for enhanced fit and ultimate weatherproofing and features corrosion resistant terminals Power lead wire is ran directly from the battery for isolation and brighter trailer taillights Includes power lead wire, fuse assembly, dust cover, splice connectors, ground screw, and grease packet