An apparatus for installing at least one electrical contact into a connector housing comprises a base configured to fixedly support the connector housing, an alignment guide, extending from the base and having a central axis, and a carrier, translatably and pivotally coupled with the alignment guide. With the connector housing fixedly supported by the base, the alignment guide is configured to be parallel to an insertion axis of a socket of the connector housing, and the carrier is movable parallel to the insertion axis. The apparatus additionally comprises a tool holder, coupled to the carrier. The tool holder has a working axis, only one degree of freedom relative to the carrier, and only three degrees of freedom relative to the base.