The Napa Echlin SW16 6 Volt Battery Disconnect Isolation Switch is a gold vintage switch assembly designed for controlling the engine kill function in vehicles. It features a durable and dustproof design, with universal fitment for rear or dashboard placement. Manufactured in the United States by NAPA, this switch assembly replaces the M290-05BX and S615 interchange part numbers, providing a reliable solution for ensuring battery isolation. Please note the California Prop 65 Warning for cancer and reproductive harm.