A method for installing an elastomeric cover sleeve on an electrical connection including a connector and a cable having a cable axis includes: providing an installation tool including a slide portion; premounting the installation tool on the cable such that the slide portion extends along the cable axis and covers a portion of the cable; thereafter, sliding the cover sleeve onto the cable and onto the slide portion of the premounted installation tool to a parked position wherein the slide portion is interposed between the cover sleeve and the cable; installing the connector onto the cable; and thereafter, sliding the cover sleeve along the cable axis and the slide portion onto the connector.