The Standard Ignition NS 27 SI Neutral Safety Switch is a critical component designed to enhance the safety and reliability of vehicle electrical systems This switch ensures that the engine starts only when the transmission is in the park or neutral position preventing unintended vehicle movement and potential accidents Constructed with high grade materials the NS 27 SI is engineered to withstand the rigorous demands of modern service professionals offering durability and consistent performance The switch features copper alloy conductors that provide superior electrical conductivity with low resistive losses ensuring efficient operation Each unit undergoes comprehensive testing to verify both mechanical and electrical switching performance adhering to stringent quality control standards The NS 27 SI is compatible with various Ford and Mercury models including the Mercury Marquis 1981 1986 Mercury Grand Marquis 1981 Mercury Zephyr 1979 1983 Mercury Cougar 1980 1986 Mercury Capri 1979 1986 Ford Ranger 1983 1984 Ford Thunderbird 1980 1987 Ford LTD 1983 1985 1986 Ford Granada 1981 1982 Ford Mustang 1979 1986 Ford Fairmont 1979 1983 and Ford Bronco II 1984 Its robust designd high grade materials meet the stringent demands of today s service professionals ensuring long term reliability and performance By integrating the Standard Ignition NS 27 SI Neutral Safety Switch into your vehicle s electrical system you can enhance operational safety and maintain the integrity of your vehicle s starting mechanism