Pollak 11-404P 4-Way Round Trailer Connector 4-Pin Metal Socket

7-Way Round to 4-Way Flat Converter Trailer Wiring Plug Adapter from Ford Pollak

Pollak 6-Pin 4-Wire Trailer/Remote Plug Adapter – Heavy Duty Connector

2 Pack Pollak 11-404 4-Way Round Trailer Connector 4-Pin Metal Socket

Pollak 11-404 4-Way Round Trailer Connector 4-Pin Metal Socket, NOS Made In USA

7-Way Round to 4-Way Flat Converter Trailer Wiring Plug Adapter from Ford Pollak