This 1157 socket pigtail uses a two filament light bulb commonly used in brake light, turn signal and tail light applications.
Pigtail measures 10"
Reported to fit these Pontiac vehicles:
Bonneville 1959-75
Catalina 1959-75
Executive 1967-1970
Firebird 1967-75
GTO 1964-73
LeMans 1963-75