Electrical connector with overmolded and snap locked pieces

An electrical connector (14) comprising a contact wafer (24) having at least one electrical contact (22) connected to a first housing piece (26); a second housing piece (38) having a contact wafer receiving area (44) with snap lock latching surfaces (70), and a third housing piece (40) overmolded onto rear ends of the first and second housing pieces. The first housing piece (26) is snap lock inserted into the contact wafer receiving area (44) and forms a seal between the first and second housing pieces (26, 38). The seal between the first and second housing pieces substantially prevents flash blow by between the first and second housing pieces of material that forms the third housing piece (40) as the third housing piece is overmolded onto the first and second housing pieces (26, 38).