Amazon.com: CNLINKO 4 Pin Power Industrial Circular Connector, Male Plug & Female Panel Mount Receptacles Socket Jack, Outdoor Waterproof IP67, AC DC : Electronics
32 AMP 4 PIN SOCKET / PLUG (2 PCS/PACK) | Lazada
Four-Pin Electrical Connector | West Marine
LH0910 Converts a 4 pin CFL lamp holder/socket to an E26/E27 medium base lamp holder/socket