The 1979-1980 Ford Mustang E1AZ-12A199-C Ignition Control Module is a vintage part that is compatible with Ford, Mercury, and Lincoln vehicles. This module, with part numbers D9AZ-12A199-A and D9AZ-12A199-B, is designed for front placement on vehicles and is a superseded part from the years 1979 to 1983. Additionally, it can interchange with other ignition control modules such as DY-249 and DY-249-A, making it a versatile option for those looking to restore or repair their classic Ford Mustang or other compatible vehicles.  bb25