REESE TOWPOWER 74678 Brake Light Adapter with Backup Alarm, Plastic Housing Material, Black

REESE TOWPOWER adapters allow for quick connections of different trailer wring. The 74678 adapter allows connection of either a 4 or 5-flat trailer plug to vehicles with 7-way receptacles. It is designed for use with boat and utility trailers with certain hydraulic surge brakes and/or backup lights. It includes a unique built-in back-up alarm that warns when the tow vehicle is in reverse.