Abstract: An electric connector suitable for establishing electrical connection between a wire and a mating connector or between a wire and another wire comprising: means forming a body, the means including contact means, the contact means having a first end for receiving a wire and a second end for making an electrical connection with the mating connector or for receiving another wire; plate means mountable on the body and forming a plurality of guide channels for wire and guide slots for receiving slidable cam means; means for retaining the plate means on the means forming a body; and slidable cam means slidably positioned in the receiving means, and slidable between a first position adjacent said means for piercing insulation and a second position remote therefrom, whereby a wire may be inserted into the guide channels when the cam means is in the second position and can be forced by said cam means into engagement with said means for piercing insulation on a wire by moving the cam means to the first position.