Abstract: An improved modular connector coupler for joining two modular plugs features an improved spring contact portion and a selective, continuous commoning system. The spring contact portion of the conductors substantially increases the area of contact with the mating plug's terminals, and prevents overstressing of the conductors. The permanently installed commoning bar assembly provides continuous electrical connection between two or more of the main conductors in such a manner that micromovements of the conductors are easily followed and do not cause open circuits. The housing structure features two substantially identical housing halves which are connected back-to-back in a 180.degree. rotated configuration.