A test set-up for a test system for testing a cable harness, - with a collective line which can be connected to a central unit of the test system, - with a plurality of test units (26a-j), wherein each of the test units (26a-j) has exactly one connection module (28a-j) connected to the collective line and exactly one test module (22a-j) connected to said connection module, - wherein each of the test modules (22a-j) has: - a connector pin number of respective single-pole electrical connector contacts for the cable harness, and - an auxiliary pin number of electrical auxiliary contacts for an infrastructure of the test module (22a-j), - wherein at least one of the test units (26a-j) comprises a connector pin consolidator and/or an auxiliary pin consolidator, - wherein, in the case of the connector pin consolidator, the connector contacts are routed via the connector pin number of connector pin lines to the connector pin consolidator, and a smaller connector pin collective number of connector pin collective lines is routed from the connector pin consolidator to the connection module (28a-j), wherein the connector pin consolidator is arranged such that in said connector pin consolidator at least two of the connector pin lines are routed in a uniquely coded manner to one of the connector pin collective lines, - wherein, in the case of the auxiliary pin consolidator, the auxiliary contacts are routed via the auxiliary pin number of auxiliary lines to the auxiliary pin consolidator, and a smaller auxiliary pin collective number of auxiliary pin collective lines is routed from the auxiliary pin consolidator to the connection module (28a-j), wherein the auxiliary pin consolidator is arranged such that in said connector pin consolidator at least two of the auxiliary lines are routed in a uniquely coded manner to one of the auxiliary pin collective lines, - wherein, otherwise, in the test units (26a-j), the connector pin number of connector pin lines and/or the auxiliar pin number of auxiliary lines is routed from the particular test module (22a-j) to the particular connection module (28a-j). - with a collective line which can be connected to a central unit of the test system, - with a plurality of test units (26a-j), wherein each of the test units (26a-j) has exactly one connection module (28a-j) connected to the collective line and exactly one test module (22a-j) connected to said connection module, - wherein each of the test modules (22a-j) has: - a connector pin number of respective single-pole electrical connector contacts for the cable harness, and - an auxiliary pin number of electrical auxiliary contacts for an infrastructure of the test module (22a-j), - wherein at least one of the test units (26a-j) comprises a connector pin consolidator and/or an auxiliary pin consolidator, - wherein, in the case of the connector pin consolidator, the connector contacts are routed via the connector pin number of connector pin lines to the connector pin consolidator, and a smaller connector pin collective number of connector pin collective lines is routed from the connector pin consolidator to the connection module (28a-j), wherein the connector pin consolidator is arranged such that in said connector pin consolidator at least two of the connector pin lines are routed in a uniquely coded manner to one of the connector pin collective lines, - wherein, in the case of the auxiliary pin consolidator, the auxiliary contacts are routed via the auxiliary pin number of auxiliary lines to the auxiliary pin consolidator, and a smaller auxiliary pin collective number of auxiliary pin collective lines is routed from the auxiliary pin consolidator to the connection module (28a-j), wherein the auxiliary pin consolidator is arranged such that in said connector pin consolidator at least two of the auxiliary lines are routed in a uniquely coded manner to one of the auxiliary pin collective lines, - wherein, otherwise, in the test units (26a-j), the connector pin number of connector pin lines and/or the auxiliar pin number of auxiliary lines is routed from the particular test module (22a-j) to the particular connection module (28a-j).