A-B17019543YP-AI SWITCH, IGNITIONOne New Aftermarket Replacement Ignition Switch for Snapper Murray Simplicity Garden Tractors This ignition switch is a direct fit replacement for Snapper, Murray, and Simplicity lawn and garden tractors. Mounted on the dash or control panel, it controls the electrical circuits that enable starting, running, and shutdown of the engine. A failing or worn ignition switch can prevent starting or cause unexpected engine cutoff replacing it restores