Adapter Ring model 512-9911-1 is used for converting:
- 504/505/506 Motorized Stern Light to a 512-1220 Plug-In Mount Stern Light
- 514/515/516 Extend-A-Light Stern Light to a 512-1220 Plug-In Mount Stern Light
NOTE: the 512-9911-1 adapter ONLY converts the 512-1220 S.S. round base light
