Tow more than one trailer? Take advantage of your existing 4 Flat when adapting. The Hopkins Towing Solutions 47185 Multi-Tow adapter attaches to an existing 4 Flat to bring the lighting functions to the 7 Blade and 4 Flat connectors leaving electric brakes auxiliary power reverse lights and ground as the only functions that need to be wired. The Multi-Tow design feature adds multiple towing options from one connector by providing sockets for towing both 7 Blade and 4 Flat trailers. Pre-wired for easier installation. Flexible wire increases installation options. Mounts to vehicle bumper. Includes mounting bracket and hardware. New Corrosion resistant terminals. Includes 90 day warranty from date of original purchase.