A computerized discrete wire inventory indexing system organizes and automates the intake of wiring used in a wire harness assembly work cell. Functions in a work cell may be duplicated into a second arrangement symmetrically opposite to a first arrangement so that an indexing system in accordance with the invention may operate between or alongside the adjacent work cells to execute its tasks in tandem and produce pairs of wires to be used within the two work cells. The wire indexing system operates with a tandem wire pulling machine on a movable shuttle that grabs pairs of wires from the indexing system and draws them to length. Both the shuttle and the wire indexing system may includes fixtures for stripping and terminating wires by crimping terminals onto prepared wire ends. Computer control enables rapid and correct wire production and efficient process change-overs.