Patent ID: 7108534

Claim:
An electrical connector assembly comprising: a first and a second electrical connector connectable along an axis, each electrical connector including a housing configured and dimensioned for receiving a pair of electrical contact housings, each electrical contact housing having electrical contacts therein, wherein each electrical contact of said first electrical connector contacts a corresponding contact of said second electrical connector during connection thereof; a first keying arrangement for polarizing to assure proper orientation of said first electrical connector with said second electrical connector during connection thereof; and a second keying arrangement for inhibiting said connection except for connecting a first electrical connector to a designated second electrical connector, comprising: a first keying wall defined by said first electrical connector housing and a second keying wall defined by said second electrical connector housing, where the first and second keying walls are substantially complementary with respect to each other for enabling connection of said first and second electrical connector housings along said axis when said housings are in axial alignment, a portion of said first keying wall of said first electrical connector housing defining a pair of openings and a portion of said second keying wall of said second electrical connector housing defining a corresponding pair of openings, each opening defining a key-receiving axis therealong parallel to the axis so that when said housings are connected said pair of openings in said first electrical connector housing are in axial alignment with said corresponding pair of openings in said second electrical connector housing.