PartsSquare 2X Socket Connector Wire Harness For brake Signal Light Bulb 7440 T20 W21W W21W,7505,T20,7440,7440A,992 7440 Socket Reverse Backup Tail Brake Turn Signal Light Exterior Lights 7440 Cross Reference: W21W, 21W, W3X16D, ECE ( SIGLE CONTACT)