Abstract: Apparatus for inserting wires into the wire-receiving portions of terminals in an electrical connector housing comprises a wire-inserting press and a fixture means which is separate from the press and which can be mounted on the press during the inserting operation. The fixture means comprises a block-like member having wire-locating means and housing positioning means thereon arranged such that when the housing and wires are located on the fixture means, the wires will be in alignment with the terminals in the housing. When the fixture means and press are assembled to each other and the press ram is moved towards the fixture means, cooperative aligning pins and sockets on the fixture and on the press ram move into engagement with each other precisely to align the wires and the connector housing with the insertion punches on the press ram.