6-Way Die-Cast Metal Socket With Concealed Terminals features high impact interiors of super strength keyed for proper assembly. Brass terminal pins for best conductivity, terminals accept up to #12 gauge wires. Includes concealed terminals for easy assembly. Two 1/4" mounting holes on 6-way sockets, 2-7/8" on center. Mounts through a 1-3/8" hole. 6-Way interiors are secured with a key and keyway to eliminate twisting (disorientation) and breakage with make and break forces that apply in normal function. Terminal Guide: The white terminal pin is the ground return circuit, the brown terminal pin is the tail light circuit, the yellow terminal pin is the left turn circuit, the red terminal pin is the electric brake circuit, the green terminal pin is the right turn circuit and the blue terminal pin is the auxiliary circuit in the center of the socket.