An electrical connector assembly 10, and method of assembling, comprising a front electrical connector 12 and a rear electrical connector 23 secured together at a separable interface, the front electrical connector 12 including securing means 19 and guiding means 68 and a rear electrical connector 23 including receiving means 56 and aligning means 74. The securing means is engaged by the receiving means to assemble the electrical connector assembly 10 by drawing the front electrical connector 12 relatively toward the rear electrical connector 23, and the guiding means 68 being engaged by the aligning means 74 to maintain the front electrical connector 12 in a precise spatial relationship with respect to the rear electrical connector 23 during assembly and disassembly. The front entry electrical connector 12 further includes first electrical contacts 14 designed to mate with second electrical contacts 48 of the rear electrical connector 23 at the separable interface, the first electrical contacts 14 being removable through the rearward end 34 of the front electrical connector 12 exposed when the front and rear connectors are separated.